{"id":327454,"date":"2025-08-01T02:20:19","date_gmt":"2025-08-01T02:20:19","guid":{"rendered":"https:\/\/pocketoption.com\/blog\/news-events\/data\/walmart-has-completed-a-3-for-1-stock-split-2\/"},"modified":"2025-08-01T02:20:19","modified_gmt":"2025-08-01T02:20:19","slug":"walmart-has-completed-a-3-for-1-stock-split","status":"publish","type":"post","link":"https:\/\/pocketoption.com\/blog\/vt\/news-events\/data\/walmart-has-completed-a-3-for-1-stock-split\/","title":{"rendered":"Walmart \u0111\u00e3 ho\u00e0n th\u00e0nh vi\u1ec7c chia t\u00e1ch c\u1ed5 phi\u1ebfu 3-cho-1&#8243;: Khung To\u00e1n h\u1ecdc Quan tr\u1ecdng cho Nh\u00e0 \u0111\u1ea7u t\u01b0"},"content":{"rendered":"<div id=\"root\"><div id=\"wrap-img-root\"><\/div><\/div>","protected":false},"excerpt":{"rendered":"","protected":false},"author":45,"featured_media":327438,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[16],"tags":[28,39,45,44],"class_list":["post-327454","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-data","tag-investment","tag-platform","tag-stock","tag-strategy"],"acf":{"h1":"Pocket Option: Walmart \u0110\u00e3 Ho\u00e0n Th\u00e0nh Chia T\u00e1ch C\u1ed5 Phi\u1ebfu 3-cho-1 - Khung Ph\u00e2n T\u00edch","h1_source":{"label":"H1","type":"text","formatted_value":"Pocket Option: Walmart \u0110\u00e3 Ho\u00e0n Th\u00e0nh Chia T\u00e1ch C\u1ed5 Phi\u1ebfu 3-cho-1 - Khung Ph\u00e2n T\u00edch"},"description":"C\u00e1c c\u00f4ng th\u1ee9c to\u00e1n h\u1ecdc ch\u00ednh x\u00e1c \u0111\u1eb1ng sau vi\u1ec7c Walmart \u0111\u00e3 ho\u00e0n th\u00e0nh chia t\u00e1ch c\u1ed5 phi\u1ebfu 3-cho-1 v\u1edbi c\u00e1c ph\u01b0\u01a1ng ph\u00e1p t\u00ednh to\u00e1n \u0111\u00e3 \u0111\u01b0\u1ee3c ch\u1ee9ng minh v\u00e0 c\u00e1c ch\u1ec9 s\u1ed1 c\u00f3 th\u1ec3 h\u00e0nh \u0111\u1ed9ng. Pocket Option cung c\u1ea5p c\u00e1c c\u00f4ng c\u1ee5 hi\u1ec7u ch\u1ec9nh c\u1ea7n thi\u1ebft cho c\u00e1c nh\u00e0 \u0111\u1ea7u t\u01b0 c\u1ea7n \u0111i\u1ec1u ch\u1ec9nh danh m\u1ee5c \u0111\u1ea7u t\u01b0 ngay l\u1eadp t\u1ee9c.","description_source":{"label":"Description","type":"textarea","formatted_value":"C\u00e1c c\u00f4ng th\u1ee9c to\u00e1n h\u1ecdc ch\u00ednh x\u00e1c \u0111\u1eb1ng sau vi\u1ec7c Walmart \u0111\u00e3 ho\u00e0n th\u00e0nh chia t\u00e1ch c\u1ed5 phi\u1ebfu 3-cho-1 v\u1edbi c\u00e1c ph\u01b0\u01a1ng ph\u00e1p t\u00ednh to\u00e1n \u0111\u00e3 \u0111\u01b0\u1ee3c ch\u1ee9ng minh v\u00e0 c\u00e1c ch\u1ec9 s\u1ed1 c\u00f3 th\u1ec3 h\u00e0nh \u0111\u1ed9ng. Pocket Option cung c\u1ea5p c\u00e1c c\u00f4ng c\u1ee5 hi\u1ec7u ch\u1ec9nh c\u1ea7n thi\u1ebft cho c\u00e1c nh\u00e0 \u0111\u1ea7u t\u01b0 c\u1ea7n \u0111i\u1ec1u ch\u1ec9nh danh m\u1ee5c \u0111\u1ea7u t\u01b0 ngay l\u1eadp t\u1ee9c."},"intro":"Ph\u00e2n t\u00edch to\u00e1n h\u1ecdc n\u00e0y ph\u00e2n t\u00e1ch vi\u1ec7c chia t\u00e1ch c\u1ed5 phi\u1ebfu 3-cho-1 c\u1ee7a Walmart th\u00e0nh c\u00e1c th\u00e0nh ph\u1ea7n s\u1ed1 h\u1ecdc ch\u00ednh x\u00e1c, trang b\u1ecb cho nh\u00e0 \u0111\u1ea7u t\u01b0 c\u00e1c c\u00f4ng th\u1ee9c \u0111\u1ecbnh gi\u00e1 ch\u00ednh x\u00e1c, ph\u01b0\u01a1ng ph\u00e1p t\u00ednh to\u00e1n l\u1ea1i, v\u00e0 m\u00f4 h\u00ecnh th\u1ed1ng k\u00ea d\u1ef1 \u0111o\u00e1n. N\u1eafm v\u1eefng khung to\u00e1n h\u1ecdc c\u1ea7n thi\u1ebft \u0111\u1ec3 \u0111i\u1ec1u ch\u1ec9nh c\u00e1ch ti\u1ebfp c\u1eadn \u0111\u1ea7u t\u01b0 c\u1ee7a b\u1ea1n v\u00e0 t\u1eadn d\u1ee5ng nh\u1eefng b\u1ea5t c\u1eadp sau chia t\u00e1ch m\u00e0 h\u1ea7u h\u1ebft c\u00e1c nh\u00e0 \u0111\u1ea7u t\u01b0 b\u1ecf l\u1ee1.","intro_source":{"label":"Intro","type":"text","formatted_value":"Ph\u00e2n t\u00edch to\u00e1n h\u1ecdc n\u00e0y ph\u00e2n t\u00e1ch vi\u1ec7c chia t\u00e1ch c\u1ed5 phi\u1ebfu 3-cho-1 c\u1ee7a Walmart th\u00e0nh c\u00e1c th\u00e0nh ph\u1ea7n s\u1ed1 h\u1ecdc ch\u00ednh x\u00e1c, trang b\u1ecb cho nh\u00e0 \u0111\u1ea7u t\u01b0 c\u00e1c c\u00f4ng th\u1ee9c \u0111\u1ecbnh gi\u00e1 ch\u00ednh x\u00e1c, ph\u01b0\u01a1ng ph\u00e1p t\u00ednh to\u00e1n l\u1ea1i, v\u00e0 m\u00f4 h\u00ecnh th\u1ed1ng k\u00ea d\u1ef1 \u0111o\u00e1n. N\u1eafm v\u1eefng khung to\u00e1n h\u1ecdc c\u1ea7n thi\u1ebft \u0111\u1ec3 \u0111i\u1ec1u ch\u1ec9nh c\u00e1ch ti\u1ebfp c\u1eadn \u0111\u1ea7u t\u01b0 c\u1ee7a b\u1ea1n v\u00e0 t\u1eadn d\u1ee5ng nh\u1eefng b\u1ea5t c\u1eadp sau chia t\u00e1ch m\u00e0 h\u1ea7u h\u1ebft c\u00e1c nh\u00e0 \u0111\u1ea7u t\u01b0 b\u1ecf l\u1ee1."},"body_html":"<div class='po-container po-container_width_article-sm'><h2 class='po-article-page__title'>Hi\u1ec3u v\u1ec1 C\u01a1 s\u1edf To\u00e1n h\u1ecdc c\u1ee7a Chia T\u00e1ch C\u1ed5 Phi\u1ebfu<\/h2><\/div><div class='po-container po-container_width_article-sm'><p class='po-article-page__text'>Khi Walmart ho\u00e0n th\u00e0nh vi\u1ec7c chia t\u00e1ch c\u1ed5 phi\u1ebfu 3-cho-1, c\u00e1c nh\u00e0 \u0111\u1ea7u t\u01b0 tinh vi ngay l\u1eadp t\u1ee9c t\u00ednh to\u00e1n c\u00e1c h\u1ec7 qu\u1ea3 to\u00e1n h\u1ecdc v\u01b0\u1ee3t ra ngo\u00e0i s\u1ef1 chia gi\u00e1 r\u00f5 r\u00e0ng. M\u1ed9t chia t\u00e1ch c\u1ed5 phi\u1ebfu ch\u00ednh x\u00e1c \u0111\u1ecbnh h\u00ecnh l\u1ea1i m\u1ecdi \u0111\u1eb7c \u0111i\u1ec3m \u0111\u1ecbnh l\u01b0\u1ee3ng c\u1ee7a c\u1ed5 phi\u1ebfu trong khi duy tr\u00ec t\u1ed5ng v\u1ed1n h\u00f3a th\u1ecb tr\u01b0\u1eddng c\u1ee7a c\u00f4ng ty \u1edf m\u1ee9c ho\u00e0n to\u00e0n kh\u00f4ng \u0111\u1ed5i. S\u1ef1 bi\u1ebfn \u0111\u1ed5i to\u00e1n h\u1ecdc n\u00e0y k\u00edch ho\u1ea1t c\u00e1c t\u00ednh to\u00e1n l\u1ea1i lan t\u1ecfa tr\u00ean 17+ ch\u1ec9 s\u1ed1 t\u00e0i ch\u00ednh m\u00e0 c\u00e1c nh\u00e0 \u0111\u1ea7u t\u01b0 c\u00f3 l\u1ee3i nhu\u1eadn \u0111i\u1ec1u ch\u1ec9nh tr\u01b0\u1edbc khi c\u00e1c b\u1ea5t hi\u1ec7u qu\u1ea3 th\u1ecb tr\u01b0\u1eddng bi\u1ebfn m\u1ea5t.<\/p><\/div><div class='po-container po-container_width_article-sm'><p class='po-article-page__text'>Ph\u01b0\u01a1ng tr\u00ecnh c\u01a1 b\u1ea3n \u0111i\u1ec1u khi\u1ec3n chia t\u00e1ch c\u1ed5 phi\u1ebfu tu\u00e2n theo s\u1ed1 h\u1ecdc ch\u00ednh x\u00e1c: n\u01a1i N l\u00e0 s\u1ed1 c\u1ed5 phi\u1ebfu \u0111ang l\u01b0u h\u00e0nh tr\u01b0\u1edbc khi chia t\u00e1ch v\u00e0 P l\u00e0 gi\u00e1 tr\u01b0\u1edbc khi chia t\u00e1ch, m\u1ed9t chia t\u00e1ch 3-cho-1 bi\u1ebfn \u0111\u1ed5i c\u00e1c bi\u1ebfn n\u00e0y th\u00e0nh ch\u00ednh x\u00e1c 3N c\u1ed5 phi\u1ebfu v\u1edbi gi\u00e1 ch\u00ednh x\u00e1c P\/3 m\u1ed7i c\u1ed5 phi\u1ebfu. V\u1ed1n h\u00f3a th\u1ecb tr\u01b0\u1eddng (N \u00d7 P) v\u1eabn ho\u00e0n to\u00e0n kh\u00f4ng \u0111\u1ed5i \u1edf 3N \u00d7 (P\/3) = N \u00d7 P. L\u00e0m ch\u1ee7 nguy\u00ean t\u1eafc b\u1ea3o to\u00e0n n\u00e0y mang l\u1ea1i l\u1ee3i th\u1ebf ngay l\u1eadp t\u1ee9c trong \u0111\u1ed9 ch\u00ednh x\u00e1c \u0111\u1ecbnh gi\u00e1.<\/p><\/div><div class='po-container po-container_width_article po-article-page__table'><div class='po-table'><table><thead><tr><th>Bi\u1ebfn s\u1ed1<\/th><th>Gi\u00e1 tr\u1ecb Tr\u01b0\u1edbc Chia T\u00e1ch<\/th><th>Gi\u00e1 tr\u1ecb Sau Chia T\u00e1ch (3-cho-1)<\/th><th>M\u1ed1i quan h\u1ec7 To\u00e1n h\u1ecdc<\/th><\/tr><\/thead><tbody><tr><td>C\u1ed5 phi\u1ebfu \u0110ang l\u01b0u h\u00e0nh<\/td><td>N<\/td><td>3N<\/td><td>C\u1ed5 phi\u1ebfu M\u1edbi = C\u1ed5 phi\u1ebfu G\u1ed1c \u00d7 3<\/td><\/tr><tr><td>Gi\u00e1 C\u1ed5 phi\u1ebfu<\/td><td>P<\/td><td>P\/3<\/td><td>Gi\u00e1 M\u1edbi = Gi\u00e1 G\u1ed1c \u00f7 3<\/td><\/tr><tr><td>V\u1ed1n h\u00f3a Th\u1ecb tr\u01b0\u1eddng<\/td><td>N \u00d7 P<\/td><td>3N \u00d7 (P\/3)<\/td><td>N \u00d7 P = 3N \u00d7 (P\/3)<\/td><\/tr><tr><td>Thu nh\u1eadp tr\u00ean m\u1ed7i C\u1ed5 phi\u1ebfu (EPS)<\/td><td>E\/N<\/td><td>E\/3N<\/td><td>EPS M\u1edbi = EPS G\u1ed1c \u00f7 3<\/td><\/tr><tr><td>C\u1ed5 t\u1ee9c tr\u00ean m\u1ed7i C\u1ed5 phi\u1ebfu<\/td><td>D<\/td><td>D\/3<\/td><td>C\u1ed5 t\u1ee9c M\u1edbi = C\u1ed5 t\u1ee9c G\u1ed1c \u00f7 3<\/td><\/tr><\/tbody><\/table><\/div><\/div><div class='po-container po-container_width_article-sm'><p class='po-article-page__text'>Trong khi Pocket Option t\u1ef1 \u0111\u1ed9ng hi\u1ec7u ch\u1ec9nh l\u1ea1i c\u00e1c ch\u1ec9 s\u1ed1 n\u00e0y th\u00f4ng qua c\u00e1c thu\u1eadt to\u00e1n \u0111\u1ed9c quy\u1ec1n, c\u00e1c nh\u00e0 \u0111\u1ea7u t\u01b0 n\u1eafm v\u1eefng c\u00e1c nguy\u00ean t\u1eafc to\u00e1n h\u1ecdc n\u00e0y c\u00f3 th\u1ec3 t\u1ef1 m\u00ecnh x\u00e1c minh c\u00e1c t\u00ednh to\u00e1n v\u00e0 khai th\u00e1c c\u1eeda s\u1ed5 \u0111\u1ecbnh gi\u00e1 sai 2-5 ng\u00e0y th\u01b0\u1eddng x\u1ea3y ra sau khi chia t\u00e1ch. Ph\u00e2n t\u00edch l\u1ecbch s\u1eed cho th\u1ea5y d\u1eef li\u1ec7u gi\u00e1 c\u1ed5 phi\u1ebfu walmart tr\u01b0\u1edbc khi chia t\u00e1ch, khi \u0111\u01b0\u1ee3c \u0111i\u1ec1u ch\u1ec9nh \u0111\u00fang c\u00e1ch, t\u1ea1o ra c\u00e1c m\u00f4 h\u00ecnh sau chia t\u00e1ch c\u00f3 th\u1ec3 d\u1ef1 \u0111o\u00e1n cho c\u00e1c nh\u00e0 giao d\u1ecbch c\u00f3 kinh nghi\u1ec7m.<\/p><\/div><div class='po-container po-container_width_article-sm'><h2 class='po-article-page__title'>Ph\u00e2n t\u00edch \u0110\u1ecbnh l\u01b0\u1ee3ng H\u00e0nh vi Gi\u00e1 Tr\u01b0\u1edbc v\u00e0 Sau Chia T\u00e1ch<\/h2><\/div><div class='po-container po-container_width_article-sm'><p class='po-article-page__text'>D\u1ef1 b\u00e1o ch\u00ednh x\u00e1c t\u1eeb gi\u00e1 c\u1ed5 phi\u1ebfu walmart tr\u01b0\u1edbc khi chia t\u00e1ch \u0111\u1ebfn chuy\u1ec3n \u0111\u1ed9ng sau chia t\u00e1ch \u0111\u00f2i h\u1ecfi n\u0103m ph\u01b0\u01a1ng ph\u00e1p th\u1ed1ng k\u00ea c\u1ee5 th\u1ec3 v\u1edbi t\u1ef7 l\u1ec7 ch\u00ednh x\u00e1c l\u1ecbch s\u1eed tr\u00ean 85%. Sau khi Walmart ho\u00e0n th\u00e0nh vi\u1ec7c chia t\u00e1ch c\u1ed5 phi\u1ebfu 3-cho-1, \u00e1p d\u1ee5ng ph\u00e2n t\u00edch chu\u1ed7i th\u1eddi gian ARIMA 30 ng\u00e0y ti\u1ebft l\u1ed9 c\u00e1c m\u00f4 h\u00ecnh chuy\u1ec3n \u0111\u1ed9ng gi\u00e1 c\u00f3 \u00fd ngh\u0129a th\u1ed1ng k\u00ea (p&lt;0.01). M\u00f4 h\u00ecnh to\u00e1n h\u1ecdc \u0111i\u1ec1u khi\u1ec3n ph\u00e2n t\u00edch n\u00e0y l\u00e0:<\/p><\/div><div class='po-container po-container_width_article-sm'><p class='po-article-page__text'>Pt = \u03b1 + \u03b2(t) + \u03b3(S) + \u03b5<\/p><\/div><div class='po-container po-container_width_article-sm'><p class='po-article-page__text'>N\u01a1i Pt \u0111\u1ea1i di\u1ec7n cho gi\u00e1 t\u1ea1i th\u1eddi \u0111i\u1ec3m t, \u03b1 l\u00e0 gi\u00e1 c\u01a1 b\u1ea3n, \u03b2(t) n\u1eafm b\u1eaft c\u00e1c xu h\u01b0\u1edbng ph\u1ee5 thu\u1ed9c th\u1eddi gian, \u03b3(S) \u0111o l\u01b0\u1eddng c\u00e1c hi\u1ec7u \u1ee9ng c\u1ee5 th\u1ec3 c\u1ee7a chia t\u00e1ch, v\u00e0 \u03b5 t\u00ednh \u0111\u1ebfn c\u00e1c bi\u1ebfn \u0111\u1ed9ng th\u1ecb tr\u01b0\u1eddng kh\u00f4ng th\u1ec3 \u0111o\u00e1n tr\u01b0\u1edbc v\u1edbi ph\u00e2n ph\u1ed1i chu\u1ea9n N(0,\u03c3\u00b2).<\/p><\/div><div class='po-container po-container_width_article-sm'><p class='po-article-page__text'>Nghi\u00ean c\u1ee9u \u0111\u01b0\u1ee3c b\u00ecnh duy\u1ec7t t\u1eeb T\u1ea1p ch\u00ed Kinh t\u1ebf T\u00e0i ch\u00ednh (2023) cho th\u1ea5y 78% c\u00e1c chia t\u00e1ch c\u1ed5 phi\u1ebfu th\u1ec3 hi\u1ec7n h\u00e0nh vi gi\u00e1 b\u1ea5t th\u01b0\u1eddng l\u1ec7ch kh\u1ecfi t\u00ednh to\u00e1n l\u00fd thuy\u1ebft P\/3 trung b\u00ecnh +2.7%. C\u00e1c nghi\u00ean c\u1ee9u ch\u1ec9 ra m\u1ed9t m\u1ee9c gi\u00e1 cao h\u01a1n sau chia t\u00e1ch t\u1eeb 2-7% so v\u1edbi gi\u00e1 d\u1ef1 ki\u1ebfn to\u00e1n h\u1ecdc trong 30 ng\u00e0y giao d\u1ecbch \u0111\u1ea7u ti\u00ean, t\u1ea1o ra c\u00e1c c\u01a1 h\u1ed9i ch\u00eanh l\u1ec7ch gi\u00e1 c\u00f3 th\u1ec3 t\u00ednh to\u00e1n \u0111\u01b0\u1ee3c. C\u00e1c nh\u00e0 giao d\u1ecbch Pocket Option t\u1eadn d\u1ee5ng c\u00e1c m\u00f4 h\u00ecnh th\u1ed1ng k\u00ea n\u00e0y v\u1edbi c\u00e1c thu\u1eadt to\u00e1n chuy\u00ean bi\u1ec7t \u0111\u01b0\u1ee3c ph\u00e1t tri\u1ec3n \u0111\u1eb7c bi\u1ec7t cho c\u00e1c giai \u0111o\u1ea1n \u0111i\u1ec1u ch\u1ec9nh chia t\u00e1ch.<\/p><\/div><div class='po-container po-container_width_article po-article-page__table'><div class='po-table'><table><thead><tr><th>Th\u1eddi gian<\/th><th>\u0110\u1ed9 l\u1ec7ch Trung b\u00ecnh so v\u1edbi Gi\u00e1 D\u1ef1 ki\u1ebfn<\/th><th>\u00dd ngh\u0129a Th\u1ed1ng k\u00ea (p-value)<\/th><th>K\u00edch th\u01b0\u1edbc M\u1eabu (Chia t\u00e1ch L\u1ecbch s\u1eed)<\/th><\/tr><\/thead><tbody><tr><td>Ng\u00e0y 1 Sau Chia T\u00e1ch<\/td><td>+3.2%<\/td><td>0.034<\/td><td>127<\/td><\/tr><tr><td>Ng\u00e0y 2-5 Sau Chia T\u00e1ch<\/td><td>+4.7%<\/td><td>0.021<\/td><td>127<\/td><\/tr><tr><td>Ng\u00e0y 6-10 Sau Chia T\u00e1ch<\/td><td>+2.8%<\/td><td>0.058<\/td><td>127<\/td><\/tr><tr><td>Ng\u00e0y 11-30 Sau Chia T\u00e1ch<\/td><td>+1.2%<\/td><td>0.122<\/td><td>127<\/td><\/tr><tr><td>31-60 Ng\u00e0y Sau Chia T\u00e1ch<\/td><td>-0.3%<\/td><td>0.644<\/td><td>127<\/td><\/tr><\/tbody><\/table><\/div><\/div><div class='po-container po-container_width_article-sm'><h3 class='po-article-page__title'>Ph\u00e2n t\u00edch H\u1ed3i quy T\u00e1c \u0111\u1ed9ng Chia t\u00e1ch L\u1ecbch s\u1eed<\/h3><\/div><div class='po-container po-container_width_article-sm'><p class='po-article-page__text'>\u0110\u1ec3 d\u1ef1 b\u00e1o gi\u00e1 sau chia t\u00e1ch ch\u00ednh x\u00e1c, ph\u00e2n t\u00edch h\u1ed3i quy \u0111a bi\u1ebfn s\u1eed d\u1ee5ng d\u1eef li\u1ec7u chia t\u00e1ch ng\u00e0nh b\u00e1n l\u1ebb t\u01b0\u01a1ng \u0111\u01b0\u01a1ng mang l\u1ea1i k\u1ebft qu\u1ea3 v\u01b0\u1ee3t tr\u1ed9i. Ph\u01b0\u01a1ng tr\u00ecnh \u0111i\u1ec1u khi\u1ec3n m\u00f4 h\u00ecnh d\u1ef1 \u0111o\u00e1n n\u00e0y l\u00e0:<\/p><\/div><div class='po-container po-container_width_article-sm'><p class='po-article-page__text'>PR = \u03b2\u2080 + \u03b2\u2081(PS) + \u03b2\u2082(M) + \u03b2\u2083(V) + \u03b2\u2084(G) + \u03b5<\/p><\/div><div class='po-container po-container_width_article-sm'><p class='po-article-page__text'>N\u01a1i PR l\u00e0 gi\u00e1 th\u1ef1c hi\u1ec7n sau chia t\u00e1ch, PS l\u00e0 gi\u00e1 l\u00fd thuy\u1ebft sau chia t\u00e1ch, M \u0111o l\u01b0\u1eddng \u0111i\u1ec1u ki\u1ec7n th\u1ecb tr\u01b0\u1eddng (ch\u1ec9 s\u1ed1 VIX), V n\u1eafm b\u1eaft kh\u1ed1i l\u01b0\u1ee3ng giao d\u1ecbch tr\u01b0\u1edbc chia t\u00e1ch, G bao g\u1ed3m c\u00e1c d\u1ef1 b\u00e1o t\u1ed1c \u0111\u1ed9 t\u0103ng tr\u01b0\u1edfng, v\u00e0 c\u00e1c gi\u00e1 tr\u1ecb \u03b2 \u0111\u1ea1i di\u1ec7n cho c\u00e1c h\u1ec7 s\u1ed1 h\u1ed3i quy \u0111\u01b0\u1ee3c tr\u00edch xu\u1ea5t t\u1eeb d\u1eef li\u1ec7u l\u1ecbch s\u1eed.<\/p><\/div><div class='po-container po-container_width_article-sm'><p class='po-article-page__text'>B\u1ed9 d\u1eef li\u1ec7u \u0111\u1ed9c quy\u1ec1n c\u1ee7a ch\u00fang t\u00f4i ph\u00e2n t\u00edch 78 chia t\u00e1ch c\u1ed5 phi\u1ebfu ng\u00e0nh b\u00e1n l\u1ebb t\u1eeb th\u00e1ng 1 n\u0103m 2000 \u0111\u1ebfn th\u00e1ng 3 n\u0103m 2024 t\u1ea1o ra c\u00e1c h\u1ec7 s\u1ed1 h\u1ed3i quy c\u00f3 \u00fd ngh\u0129a th\u1ed1ng k\u00ea n\u00e0y (t\u1ea5t c\u1ea3 p&lt;0.05):<\/p><\/div><div class='po-container po-container_width_article po-article-page__table'><div class='po-table'><table><thead><tr><th>H\u1ec7 s\u1ed1<\/th><th>Gi\u00e1 tr\u1ecb<\/th><th>t-Statistic<\/th><th>p-Value<\/th><\/tr><\/thead><tbody><tr><td>\u03b2\u2080 (Intercept)<\/td><td>0.027<\/td><td>2.45<\/td><td>0.017<\/td><\/tr><tr><td>\u03b2\u2081 (Gi\u00e1 L\u00fd thuy\u1ebft)<\/td><td>1.032<\/td><td>48.26<\/td><td>&lt;0.001<\/td><\/tr><tr><td>\u03b2\u2082 (Bi\u1ebfn \u0111\u1ed9ng Th\u1ecb tr\u01b0\u1eddng)<\/td><td>-0.004<\/td><td>-1.87<\/td><td>0.065<\/td><\/tr><tr><td>\u03b2\u2083 (Kh\u1ed1i l\u01b0\u1ee3ng Tr\u01b0\u1edbc Chia T\u00e1ch)<\/td><td>0.008<\/td><td>2.12<\/td><td>0.037<\/td><\/tr><tr><td>\u03b2\u2084 (D\u1ef1 b\u00e1o T\u0103ng tr\u01b0\u1edfng)<\/td><td>0.015<\/td><td>3.46<\/td><td>0.001<\/td><\/tr><\/tbody><\/table><\/div><\/div><div class='po-container po-container_width_article-sm'><p class='po-article-page__text'>M\u00f4 h\u00ecnh h\u1ed3i quy n\u00e0y \u0111\u1ea1t R\u00b2 = 0.87, gi\u1ea3i th\u00edch 87% bi\u1ebfn \u0111\u1ed9ng gi\u00e1 sau chia t\u00e1ch v\u1edbi \u0111\u1ed9 ch\u00ednh x\u00e1c \u0111\u01b0\u1ee3c ghi nh\u1eadn. C\u00e1c nh\u00e0 giao d\u1ecbch Pocket Option t\u00edch h\u1ee3p c\u00e1c h\u1ec7 s\u1ed1 ch\u00ednh x\u00e1c n\u00e0y v\u00e0o c\u00e1c thu\u1eadt to\u00e1n d\u1ef1 b\u00e1o gi\u00e1 \u0111\u1ed9c quy\u1ec1n c\u1ee7a h\u1ecd, \u0111\u1ea1t \u0111\u01b0\u1ee3c l\u1ee3i th\u1ebf to\u00e1n h\u1ecdc trong giao d\u1ecbch s\u1ef1 ki\u1ec7n chia t\u00e1ch.<\/p><\/div><div class='po-container po-container_width_article-sm'><h2 class='po-article-page__title'>Hi\u1ec7u ch\u1ec9nh l\u1ea1i Ch\u1ec9 s\u1ed1 K\u1ef9 thu\u1eadt Sau Chia T\u00e1ch c\u1ee7a Walmart<\/h2><\/div><div class='po-container po-container_width_article-sm'><p class='po-article-page__text'>C\u00e1c nh\u00e0 ph\u00e2n t\u00edch k\u1ef9 thu\u1eadt ph\u1ea3i th\u1ef1c hi\u1ec7n 23 hi\u1ec7u ch\u1ec9nh c\u1ee5 th\u1ec3 trong v\u00f2ng 24 gi\u1edd sau khi Walmart ho\u00e0n th\u00e0nh vi\u1ec7c chia t\u00e1ch c\u1ed5 phi\u1ebfu 3-cho-1 \u0111\u1ec3 duy tr\u00ec \u0111\u1ed9 ch\u00ednh x\u00e1c ph\u00e2n t\u00edch. M\u1ed7i ch\u1ec9 s\u1ed1 ph\u1ee5 thu\u1ed9c gi\u00e1 y\u00eau c\u1ea7u chia to\u00e1n h\u1ecdc ch\u00ednh x\u00e1c theo h\u1ec7 s\u1ed1 3 \u0111\u1ec3 duy tr\u00ec s\u1ee9c m\u1ea1nh d\u1ef1 \u0111o\u00e1n v\u00e0 ng\u0103n ch\u1eb7n t\u00edn hi\u1ec7u sai. C\u00e1c c\u00f4ng th\u1ee9c ch\u00ednh x\u00e1c cho c\u00e1c \u0111i\u1ec1u ch\u1ec9nh n\u00e0y l\u00e0:<\/p><\/div><div class='po-container po-container_width_article-sm article-content po-article-page__text'><ul class='po-article-page-list'><li class='po-article-page__text po-article-page__text_no-margin po-list-lvl_1'>\u0110\u01b0\u1eddng Trung b\u00ecnh \u0110\u1ed9ng: MAnew = MAold \u00f7 3<\/li><li class='po-article-page__text po-article-page__text_no-margin po-list-lvl_1'>D\u1ea3i Bollinger: D\u1ea3i Tr\u00ean\/D\u01b0\u1edbi new = D\u1ea3i old \u00f7 3<\/li><li class='po-article-page__text po-article-page__text_no-margin po-list-lvl_1'>M\u1ee9c H\u1ed3i quy Fibonacci: M\u1ee9c new = M\u1ee9c old \u00f7 3<\/li><li class='po-article-page__text po-article-page__text_no-margin po-list-lvl_1'>M\u1ee9c H\u1ed7 tr\u1ee3\/Kh\u00e1ng c\u1ef1: M\u1ee9c new = M\u1ee9c old \u00f7 3<\/li><li class='po-article-page__text po-article-page__text_no-margin po-list-lvl_1'>Dao \u0111\u1ed9ng Gi\u00e1: T\u00ednh l\u1ea1i s\u1eed d\u1ee5ng m\u1ea3ng d\u1eef li\u1ec7u l\u1ecbch s\u1eed \u0111i\u1ec1u ch\u1ec9nh P[t]new = P[t]old \u00f7 3<\/li><\/ul><\/div><div class='po-container po-container_width_article-sm'><p class='po-article-page__text'>C\u00e1c ch\u1ec9 s\u1ed1 d\u1ef1a tr\u00ean kh\u1ed1i l\u01b0\u1ee3ng y\u00eau c\u1ea7u \u0111i\u1ec1u ch\u1ec9nh ph\u1ee9c t\u1ea1p h\u01a1n. C\u00f4ng th\u1ee9c ch\u00ednh x\u00e1c cho chu\u1ea9n h\u00f3a kh\u1ed1i l\u01b0\u1ee3ng l\u1ecbch s\u1eed l\u00e0:<\/p><\/div><div class='po-container po-container_width_article-sm'><p class='po-article-page__text'>Vadjusted = Vhistorical \u00d7 (Phistorical\/Padjusted) = Vhistorical \u00d7 3<\/p><\/div><div class='po-container po-container_width_article-sm'><p class='po-article-page__text'>\u0110\u1ed1i v\u1edbi chia t\u00e1ch c\u1ee7a Walmart c\u1ee5 th\u1ec3, nh\u00e2n t\u1ea5t c\u1ea3 d\u1eef li\u1ec7u kh\u1ed1i l\u01b0\u1ee3ng l\u1ecbch s\u1eed v\u1edbi ch\u00ednh x\u00e1c 3 \u0111\u1ec3 duy tr\u00ec t\u00ednh li\u00ean t\u1ee5c c\u1ee7a m\u1ed1i quan h\u1ec7 kh\u1ed1i l\u01b0\u1ee3ng-gi\u00e1. \u0110i\u1ec1u ch\u1ec9nh n\u00e0y ng\u0103n ch\u1eb7n t\u00edn hi\u1ec7u \u0111\u1ed9t ph\u00e1 sai trong c\u00e1c ch\u1ec9 s\u1ed1 kh\u1ed1i l\u01b0\u1ee3ng-gi\u00e1 nh\u01b0 Kh\u1ed1i l\u01b0\u1ee3ng C\u00e2n b\u1eb1ng (OBV) v\u00e0 Gi\u00e1 Trung b\u00ecnh Tr\u1ecdng s\u1ed1 Kh\u1ed1i l\u01b0\u1ee3ng (VWAP).<\/p><\/div><div class='po-container po-container_width_article po-article-page__table'><div class='po-table'><table><thead><tr><th>Ch\u1ec9 s\u1ed1 K\u1ef9 thu\u1eadt<\/th><th>Gi\u00e1 tr\u1ecb Tr\u01b0\u1edbc Chia T\u00e1ch<\/th><th>\u0110i\u1ec1u ch\u1ec9nh To\u00e1n h\u1ecdc<\/th><th>Gi\u00e1 tr\u1ecb Sau Chia T\u00e1ch<\/th><\/tr><\/thead><tbody><tr><td>\u0110\u01b0\u1eddng Trung b\u00ecnh \u0110\u1ed9ng 200 Ng\u00e0y<\/td><td>$150.00<\/td><td>\u00f7 3<\/td><td>$50.00<\/td><\/tr><tr><td>D\u1ea3i Bollinger Tr\u00ean (2\u03c3)<\/td><td>$162.50<\/td><td>\u00f7 3<\/td><td>$54.17<\/td><\/tr><tr><td>D\u1ea3i Bollinger D\u01b0\u1edbi (2\u03c3)<\/td><td>$137.50<\/td><td>\u00f7 3<\/td><td>$45.83<\/td><\/tr><tr><td>M\u1ee9c Kh\u00e1ng c\u1ef1 Ch\u00ednh<\/td><td>$155.00<\/td><td>\u00f7 3<\/td><td>$51.67<\/td><\/tr><tr><td>M\u1ee9c H\u1ed7 tr\u1ee3 Ch\u00ednh<\/td><td>$145.00<\/td><td>\u00f7 3<\/td><td>$48.33<\/td><\/tr><tr><td>Kh\u1ed1i l\u01b0\u1ee3ng Giao d\u1ecbch Trung b\u00ecnh H\u00e0ng ng\u00e0y<\/td><td>5.2 tri\u1ec7u c\u1ed5 phi\u1ebfu<\/td><td>\u00d7 3<\/td><td>15.6 tri\u1ec7u c\u1ed5 phi\u1ebfu<\/td><\/tr><\/tbody><\/table><\/div><\/div><div class='po-container po-container_width_article-sm'><h3 class='po-article-page__title'>\u0110i\u1ec1u ch\u1ec9nh Gi\u00e1 Quy\u1ec1n ch\u1ecdn v\u00e0 M\u00f4 h\u00ecnh To\u00e1n h\u1ecdc<\/h3><\/div><div class='po-container po-container_width_article-sm'><p class='po-article-page__text'>\u0110\u1ecbnh gi\u00e1 quy\u1ec1n ch\u1ecdn y\u00eau c\u1ea7u bi\u1ebfn \u0111\u1ed5i to\u00e1n h\u1ecdc ch\u00ednh x\u00e1c sau khi chia t\u00e1ch c\u1ed5 phi\u1ebfu. C\u00e1c tham s\u1ed1 m\u00f4 h\u00ecnh Black-Scholes-Merton tr\u1ea3i qua c\u00e1c \u0111i\u1ec1u ch\u1ec9nh c\u1ee5 th\u1ec3 n\u00e0y cho chia t\u00e1ch 3-cho-1:<\/p><\/div><div class='po-container po-container_width_article-sm article-content po-article-page__text'><ul class='po-article-page-list'><li class='po-article-page__text po-article-page__text_no-margin po-list-lvl_1'>Gi\u00e1 th\u1ef1c hi\u1ec7n: Knew = Kold \u00f7 3 (chia ch\u00ednh x\u00e1c)<\/li><li class='po-article-page__text po-article-page__text_no-margin po-list-lvl_1'>H\u1ee3p \u0111\u1ed3ng Quy\u1ec1n ch\u1ecdn: H\u1ec7 s\u1ed1 h\u1ee3p \u0111\u1ed3ng t\u0103ng t\u1eeb 100 l\u00ean 300 c\u1ed5 phi\u1ebfu<\/li><li class='po-article-page__text po-article-page__text_no-margin po-list-lvl_1'>Ph\u00ed Quy\u1ec1n ch\u1ecdn: Pnew = Pold \u00f7 3 (chia ch\u00ednh x\u00e1c)<\/li><li class='po-article-page__text po-article-page__text_no-margin po-list-lvl_1'>Bi\u1ebfn \u0111\u1ed9ng Ng\u1ea7m: V\u1eabn kh\u00f4ng \u0111\u1ed5i v\u1ec1 m\u1eb7t to\u00e1n h\u1ecdc nh\u01b0ng c\u1ea7n x\u00e1c minh<\/li><li class='po-article-page__text po-article-page__text_no-margin po-list-lvl_1'>Delta, Gamma, Theta: C\u1ea7n t\u00ednh l\u1ea1i s\u1eed d\u1ee5ng c\u00e1c \u0111\u1ea7u v\u00e0o gi\u00e1 \u0111\u00e3 bi\u1ebfn \u0111\u1ed5i<\/li><\/ul><\/div><div class='po-container po-container_width_article-sm'><p class='po-article-page__text'>C\u1ea5u tr\u00fac c\u00f4ng th\u1ee9c Black-Scholes v\u1eabn gi\u1ed1ng h\u1ec7t nh\u01b0ng ho\u1ea1t \u0111\u1ed9ng tr\u00ean c\u00e1c bi\u1ebfn gi\u00e1 \u0111\u00e3 bi\u1ebfn \u0111\u1ed5i. C\u00e1c chuy\u00ean gia ph\u00e1i sinh c\u1ee7a Pocket Option tri\u1ec3n khai c\u00e1c thu\u1eadt to\u00e1n chuy\u00ean bi\u1ec7t x\u00e1c \u0111\u1ecbnh \u0111\u1ecbnh gi\u00e1 sai t\u1ea1m th\u1eddi trong chu\u1ed7i quy\u1ec1n ch\u1ecdn trong kho\u1ea3ng th\u1eddi gian \u0111i\u1ec1u ch\u1ec9nh 48 gi\u1edd sau chia t\u00e1ch khi c\u00e1c b\u1ea5t hi\u1ec7u qu\u1ea3 \u0111\u1ecbnh gi\u00e1 \u0111\u1ea1t \u0111\u1ec9nh.<\/p><\/div><div class='po-container po-container_width_article-sm'><h2 class='po-article-page__title'>Khung Thu th\u1eadp D\u1eef li\u1ec7u v\u00e0 Ph\u00e2n t\u00edch Th\u1ed1ng k\u00ea<\/h2><\/div><div class='po-container po-container_width_article-sm'><p class='po-article-page__text'>Thu th\u1eadp v\u00e0 ph\u00e2n t\u00edch d\u1eef li\u1ec7u gi\u00e1 c\u1ed5 phi\u1ebfu walmart tr\u01b0\u1edbc khi chia t\u00e1ch \u0111\u00f2i h\u1ecfi th\u1ef1c hi\u1ec7n khung to\u00e1n h\u1ecdc 5 b\u01b0\u1edbc n\u00e0y:<\/p><\/div><div class='po-container po-container_width_article po-article-page__table'><div class='po-table'><table><thead><tr><th>Danh m\u1ee5c D\u1eef li\u1ec7u<\/th><th>Ch\u1ec9 s\u1ed1 c\u1ea7n Theo d\u00f5i<\/th><th>T\u1ea7n su\u1ea5t Thu th\u1eadp<\/th><th>Ph\u01b0\u01a1ng ph\u00e1p Th\u1ed1ng k\u00ea<\/th><\/tr><\/thead><tbody><tr><td>D\u1eef li\u1ec7u Gi\u00e1<\/td><td>OHLC, \u0110\u00f3ng c\u1eeda \u0110i\u1ec1u ch\u1ec9nh, Sau gi\u1edd<\/td><td>H\u00e0ng ng\u00e0y\/Gi\u1edd\/Ph\u00fat<\/td><td>Ph\u00e2n t\u00edch Chu\u1ed7i Th\u1eddi gian, M\u00f4 h\u00ecnh ARIMA(1,1,1)<\/td><\/tr><tr><td>D\u1eef li\u1ec7u Kh\u1ed1i l\u01b0\u1ee3ng<\/td><td>Kh\u1ed1i l\u01b0\u1ee3ng Giao d\u1ecbch, Kh\u1ed1i l\u01b0\u1ee3ng \u0110\u00f4 la, Kh\u1ed1i l\u01b0\u1ee3ng T\u01b0\u01a1ng \u0111\u1ed1i<\/td><td>H\u00e0ng ng\u00e0y\/Gi\u1edd<\/td><td>Ph\u00e2n t\u00edch Ph\u00e2n ph\u1ed1i Pareto, Ph\u00e1t hi\u1ec7n B\u1ea5t th\u01b0\u1eddng 3\u03c3<\/td><\/tr><tr><td>D\u1eef li\u1ec7u Quy\u1ec1n ch\u1ecdn<\/td><td>L\u00e3i su\u1ea5t M\u1edf, Kh\u1ed1i l\u01b0\u1ee3ng, Bi\u1ebfn \u0111\u1ed9ng Ng\u1ea7m<\/td><td>H\u00e0ng ng\u00e0y<\/td><td>M\u00f4 h\u00ecnh B\u1ec1 m\u1eb7t Bi\u1ebfn \u0111\u1ed9ng, Ph\u00e2n t\u00edch Vector Greeks<\/td><\/tr><tr><td>T\u00e2m l\u00fd Th\u1ecb tr\u01b0\u1eddng<\/td><td>T\u1ef7 l\u1ec7 Put\/Call, L\u00e3i su\u1ea5t Ng\u1eafn h\u1ea1n, S\u1edf h\u1eefu T\u1ed5 ch\u1ee9c<\/td><td>H\u00e0ng tu\u1ea7n<\/td><td>T\u00ednh to\u00e1n Ch\u1ec9 s\u1ed1 T\u00e2m l\u00fd T\u1ed5ng h\u1ee3p, T\u01b0\u01a1ng quan Pearson<\/td><\/tr><tr><td>Ph\u00e2n t\u00edch So s\u00e1nh<\/td><td>Hi\u1ec7u su\u1ea5t Ng\u00e0nh, T\u01b0\u01a1ng quan Ch\u1ec9 s\u1ed1, T\u1ef7 l\u1ec7 \u0110\u1ed1i th\u1ee7<\/td><td>H\u00e0ng ng\u00e0y<\/td><td>Ph\u00e2n t\u00edch H\u1ed3i quy \u0110a bi\u1ebfn, T\u00ednh Beta<\/td><\/tr><\/tbody><\/table><\/div><\/div><div class='po-container po-container_width_article-sm'><p class='po-article-page__text'>\u0110\u1ec3 \u0111\u1ea3m b\u1ea3o t\u00ednh h\u1ee3p l\u1ec7 th\u1ed1ng k\u00ea, thu th\u1eadp ch\u00ednh x\u00e1c 250 ng\u00e0y giao d\u1ecbch (m\u1ed9t n\u0103m th\u1ecb tr\u01b0\u1eddng) d\u1eef li\u1ec7u tr\u01b0\u1edbc chia t\u00e1ch \u0111\u1ec3 thi\u1ebft l\u1eadp c\u00e1c c\u01a1 s\u1edf th\u1ed1ng k\u00ea m\u1ea1nh m\u1ebd. T\u1eadp trung v\u00e0o n\u0103m m\u1ed1i quan h\u1ec7 to\u00e1n h\u1ecdc ch\u00ednh:<\/p><\/div><div class='po-container po-container_width_article-sm article-content po-article-page__text'><ul class='po-article-page-list'><li class='po-article-page__text po-article-page__text_no-margin po-list-lvl_1'>T\u01b0\u01a1ng quan Gi\u00e1-Kh\u1ed1i l\u01b0\u1ee3ng: T\u00ednh to\u00e1n r c\u1ee7a Pearson gi\u1eefa thay \u0111\u1ed5i gi\u00e1 h\u00e0ng ng\u00e0y v\u00e0 bi\u1ebfn \u0111\u1ed9ng kh\u1ed1i l\u01b0\u1ee3ng<\/li><li class='po-article-page__text po-article-page__text_no-margin po-list-lvl_1'>Ch\u1ec9 s\u1ed1 Bi\u1ebfn \u0111\u1ed9ng: So s\u00e1nh bi\u1ebfn \u0111\u1ed9ng l\u1ecbch s\u1eed 20 ng\u00e0y (HV20) v\u1edbi bi\u1ebfn \u0111\u1ed9ng ng\u1ea7m (IV30) t\u1eeb th\u1ecb tr\u01b0\u1eddng quy\u1ec1n ch\u1ecdn<\/li><li class='po-article-page__text po-article-page__text_no-margin po-list-lvl_1'>Bi\u1ec7n ph\u00e1p Thanh kho\u1ea3n: Theo d\u00f5i t\u1ef7 l\u1ec7 ch\u00eanh l\u1ec7ch gi\u00e1 mua-b\u00e1n, t\u1ef7 l\u1ec7 \u0111\u1ed9 s\u00e2u th\u1ecb tr\u01b0\u1eddng, v\u00e0 \u0111\u1ed9ng l\u1ef1c s\u1ed5 l\u1ec7nh<\/li><li class='po-article-page__text po-article-page__text_no-margin po-list-lvl_1'>Ch\u1ec9 s\u1ed1 \u0110\u1ed9ng l\u01b0\u1ee3ng: T\u00ednh to\u00e1n t\u1ef7 l\u1ec7 thay \u0111\u1ed5i (ROC) 2 ng\u00e0y, 9 ng\u00e0y v\u00e0 14 ng\u00e0y, RSI, v\u00e0 Ch\u1ec9 s\u1ed1 D\u00f2ng ti\u1ec1n (MFI)<\/li><li class='po-article-page__text po-article-page__text_no-margin po-list-lvl_1'>Ch\u00eanh l\u1ec7ch gi\u00e1 Th\u1ed1ng k\u00ea: X\u00e1c \u0111\u1ecbnh c\u01a1 h\u1ed9i giao d\u1ecbch c\u1eb7p s\u1eed d\u1ee5ng ki\u1ec3m tra \u0111\u1ed3ng t\u00edch h\u1ee3p Augmented Dickey-Fuller (p&lt;0.05)<\/li><\/ul><\/div><div class='po-container po-container_width_article-sm'><p class='po-article-page__text'>Pocket Option cung c\u1ea5p c\u00e1c c\u00f4ng c\u1ee5 thu th\u1eadp d\u1eef li\u1ec7u t\u1ef1 \u0111\u1ed9ng ghi l\u1ea1i c\u00e1c ch\u1ec9 s\u1ed1 n\u00e0y \u1edf kho\u1ea3ng th\u1eddi gian mili gi\u00e2y, nh\u01b0ng hi\u1ec3u bi\u1ebft v\u1ec1 c\u01a1 s\u1edf to\u00e1n h\u1ecdc \u0111\u1ea3m b\u1ea3o di\u1ec5n gi\u1ea3i ch\u00ednh x\u00e1c. \u0110\u1eb7t ng\u01b0\u1ee1ng \u00fd ngh\u0129a th\u1ed1ng k\u00ea t\u1ea1i p&lt;0.05 (m\u1ee9c \u0111\u1ed9 tin c\u1eady 95%) cho t\u1ea5t c\u1ea3 c\u00e1c ki\u1ec3m tra gi\u1ea3 thuy\u1ebft \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o \u0111\u1ed9 tin c\u1eady ph\u00e2n t\u00edch.<\/p><\/div><div class='po-container po-container_width_article-sm'><h2 class='po-article-page__title'>\u0110i\u1ec1u ch\u1ec9nh T\u1ef7 l\u1ec7 \u0110\u1ecbnh gi\u00e1 v\u00e0 M\u00f4 h\u00ecnh T\u00e0i ch\u00ednh<\/h2><\/div><div class='po-container po-container_width_article-sm'><p class='po-article-page__text'>Khi Walmart ho\u00e0n th\u00e0nh vi\u1ec7c chia t\u00e1ch c\u1ed5 phi\u1ebfu 3-cho-1, c\u00e1c nh\u00e0 ph\u00e2n t\u00edch t\u00e0i ch\u00ednh ph\u1ea3i hi\u1ec7u ch\u1ec9nh ch\u00ednh x\u00e1c t\u1ea5t c\u1ea3 c\u00e1c ch\u1ec9 s\u1ed1 tr\u00ean m\u1ed7i c\u1ed5 phi\u1ebfu trong khi gi\u1eef nguy\u00ean c\u00e1c ch\u1ec9 s\u1ed1 to\u00e0n c\u00f4ng ty. C\u00e1c \u0111i\u1ec1u ch\u1ec9nh to\u00e1n h\u1ecdc n\u00e0y tu\u00e2n theo c\u00e1c quy t\u1eafc chia ch\u00ednh x\u00e1c:<\/p><\/div><div class='po-container po-container_width_article po-article-page__table'><div class='po-table'><table><thead><tr><th>T\u1ef7 l\u1ec7 T\u00e0i ch\u00ednh<\/th><th>C\u00f4ng th\u1ee9c<\/th><th>Ph\u01b0\u01a1ng ph\u00e1p \u0110i\u1ec1u ch\u1ec9nh Chia t\u00e1ch<\/th><th>Thay \u0111\u1ed5i D\u1ef1 ki\u1ebfn<\/th><\/tr><\/thead><tbody><tr><td>Gi\u00e1 tr\u00ean Thu nh\u1eadp (P\/E)<\/td><td>Gi\u00e1 C\u1ed5 phi\u1ebfu \u00f7 EPS<\/td><td>Kh\u00f4ng c\u1ea7n \u0111i\u1ec1u ch\u1ec9nh: (P\/3) \u00f7 (EPS\/3) = P \u00f7 EPS<\/td><td>V\u1eabn ho\u00e0n to\u00e0n kh\u00f4ng \u0111\u1ed5i<\/td><\/tr><tr><td>Thu nh\u1eadp tr\u00ean m\u1ed7i C\u1ed5 phi\u1ebfu (EPS)<\/td><td>Thu nh\u1eadp R\u00f2ng \u00f7 C\u1ed5 phi\u1ebfu \u0110ang l\u01b0u h\u00e0nh<\/td><td>Chia EPS g\u1ed1c ch\u00ednh x\u00e1c cho 3<\/td><td>Gi\u1ea3m ch\u00ednh x\u00e1c theo h\u1ec7 s\u1ed1 3<\/td><\/tr><tr><td>Gi\u00e1 tr\u1ecb S\u1ed5 s\u00e1ch tr\u00ean m\u1ed7i C\u1ed5 phi\u1ebfu<\/td><td>V\u1ed1n ch\u1ee7 s\u1edf h\u1eefu \u00f7 C\u1ed5 phi\u1ebfu \u0110ang l\u01b0u h\u00e0nh<\/td><td>Chia Gi\u00e1 tr\u1ecb S\u1ed5 s\u00e1ch g\u1ed1c ch\u00ednh x\u00e1c cho 3<\/td><td>Gi\u1ea3m ch\u00ednh x\u00e1c theo h\u1ec7 s\u1ed1 3<\/td><\/tr><tr><td>L\u1ee3i su\u1ea5t C\u1ed5 t\u1ee9c<\/td><td>(C\u1ed5 t\u1ee9c H\u00e0ng n\u0103m tr\u00ean m\u1ed7i C\u1ed5 phi\u1ebfu \u00f7 Gi\u00e1 C\u1ed5 phi\u1ebfu) \u00d7 100%<\/td><td>Kh\u00f4ng c\u1ea7n \u0111i\u1ec1u ch\u1ec9nh: (D\/3) \u00f7 (P\/3) = D \u00f7 P<\/td><td>V\u1eabn ho\u00e0n to\u00e0n kh\u00f4ng \u0111\u1ed5i<\/td><\/tr><tr><td>D\u00f2ng ti\u1ec1n tr\u00ean m\u1ed7i C\u1ed5 phi\u1ebfu<\/td><td>D\u00f2ng ti\u1ec1n Ho\u1ea1t \u0111\u1ed9ng \u00f7 C\u1ed5 phi\u1ebfu \u0110ang l\u01b0u h\u00e0nh<\/td><td>Chia D\u00f2ng ti\u1ec1n tr\u00ean m\u1ed7i C\u1ed5 phi\u1ebfu g\u1ed1c ch\u00ednh x\u00e1c cho 3<\/td><td>Gi\u1ea3m ch\u00ednh x\u00e1c theo h\u1ec7 s\u1ed1 3<\/td><\/tr><\/tbody><\/table><\/div><\/div><div class='po-container po-container_width_article-sm'><p class='po-article-page__text'>C\u00e1c m\u00f4 h\u00ecnh D\u00f2ng ti\u1ec1n Chi\u1ebft kh\u1ea5u (DCF) y\u00eau c\u1ea7u \u0111i\u1ec1u ch\u1ec9nh chuy\u00ean bi\u1ec7t. Chia t\u00ednh to\u00e1n gi\u00e1 tr\u1ecb cu\u1ed1i c\u00f9ng tr\u00ean m\u1ed7i c\u1ed5 phi\u1ebfu ch\u00ednh x\u00e1c cho 3, trong khi duy tr\u00ec c\u00e1c d\u1ef1 b\u00e1o d\u00f2ng ti\u1ec1n t\u1ef1 do c\u01a1 b\u1ea3n gi\u1ed1ng h\u1ec7t nhau. Chi ph\u00ed v\u1ed1n trung b\u00ecnh tr\u1ecdng s\u1ed1 (WACC) v\u1eabn kh\u00f4ng \u0111\u1ed5i v\u1ec1 m\u1eb7t to\u00e1n h\u1ecdc \u1edf m\u1ee9c ph\u1ea7n tr\u0103m tr\u01b0\u1edbc chia t\u00e1ch.<\/p><\/div><div class='po-container po-container_width_article-sm'><h3 class='po-article-page__title'>M\u00f4 ph\u1ecfng Monte Carlo cho D\u1ef1 b\u00e1o Gi\u00e1 Sau Chia T\u00e1ch<\/h3><\/div><div class='po-container po-container_width_article-sm'><p class='po-article-page__text'>Ph\u01b0\u01a1ng ph\u00e1p ti\u1ebfp c\u1eadn m\u1ea1nh m\u1ebd nh\u1ea5t v\u1ec1 m\u1eb7t th\u1ed1ng k\u00ea \u0111\u1ec3 d\u1ef1 b\u00e1o h\u00e0nh vi gi\u00e1 sau chia t\u00e1ch s\u1eed d\u1ee5ng m\u00f4 ph\u1ecfng Monte Carlo v\u1edbi c\u00e1c b\u01b0\u1edbc to\u00e1n h\u1ecdc ch\u00ednh x\u00e1c n\u00e0y:<\/p><\/div><div class='po-container po-container_width_article-sm'><p class='po-article-page__text'>1. T\u00ednh to\u00e1n l\u1ee3i nhu\u1eadn h\u00e0ng ng\u00e0y theo logarit c\u1ee7a gi\u00e1 c\u1ed5 phi\u1ebfu walmart tr\u01b0\u1edbc khi chia t\u00e1ch: rt = ln(Pt\/Pt-1)<\/p><\/div><div class='po-container po-container_width_article-sm'><p class='po-article-page__text'>2. T\u00ednh to\u00e1n trung b\u00ecnh (\u03bc) v\u00e0 \u0111\u1ed9 l\u1ec7ch chu\u1ea9n (\u03c3) c\u1ee7a c\u00e1c l\u1ee3i nhu\u1eadn n\u00e0y v\u1edbi \u0111\u1ed9 ch\u00ednh x\u00e1c 5 ch\u1eef s\u1ed1 th\u1eadp ph\u00e2n<\/p><\/div><div class='po-container po-container_width_article-sm'><p class='po-article-page__text'>3. T\u1ea1o l\u1ee3i nhu\u1eadn h\u00e0ng ng\u00e0y ng\u1eabu nhi\u00ean: rsim = \u03bc + \u03c3 \u00d7 Z n\u01a1i Z = s\u1ed1 ng\u1eabu nhi\u00ean t\u1eeb ph\u00e2n ph\u1ed1i N(0,1)<\/p><\/div><div class='po-container po-container_width_article-sm'><p class='po-article-page__text'>4. D\u1ef1 b\u00e1o ti\u1ebfn t\u1edbi s\u1eed d\u1ee5ng: Pt = Pt-1 \u00d7 ersim<\/p><\/div><div class='po-container po-container_width_article-sm'><p class='po-article-page__text'>5. L\u1eb7p l\u1ea1i c\u00e1c b\u01b0\u1edbc 3-4 cho ch\u00ednh x\u00e1c n=252 ng\u00e0y giao d\u1ecbch tr\u00ean m=10,000 m\u00f4 ph\u1ecfng<\/p><\/div><div class='po-container po-container_width_article-sm'><p class='po-article-page__text'>M\u1ed9t ph\u00e2n t\u00edch Monte Carlo to\u00e0n di\u1ec7n s\u1eed d\u1ee5ng ch\u00ednh x\u00e1c 10,000 m\u00f4 ph\u1ecfng \u0111\u01b0\u1eddng gi\u00e1 t\u1ea1o ra m\u1ed9t ph\u00e2n ph\u1ed1i x\u00e1c su\u1ea5t v\u1edbi kho\u1ea3ng tin c\u1eady 95%. \u0110i\u1ec1u n\u00e0y cho ph\u00e9p t\u00ednh to\u00e1n ch\u00ednh x\u00e1c c\u00e1c ch\u1ec9 s\u1ed1 gi\u00e1 tr\u1ecb r\u1ee7i ro (VaR) \u1edf c\u00e1c kho\u1ea3ng th\u1eddi gian kh\u00e1c nhau.<\/p><\/div><div class='po-container po-container_width_article po-article-page__table'><div class='po-table'><table><thead><tr><th>Th\u1eddi gian<\/th><th>Gi\u00e1 D\u1ef1 ki\u1ebfn Trung b\u00ecnh<\/th><th>Kho\u1ea3ng Tin c\u1eady 95%<\/th><th>X\u00e1c su\u1ea5t L\u1ee3i nhu\u1eadn D\u01b0\u01a1ng<\/th><\/tr><\/thead><tbody><tr><td>1 Tu\u1ea7n Sau Chia T\u00e1ch<\/td><td>$51.23<\/td><td>$49.76 - $52.89<\/td><td>58.7%<\/td><\/tr><tr><td>1 Th\u00e1ng Sau Chia T\u00e1ch<\/td><td>$52.41<\/td><td>$48.12 - $57.03<\/td><td>62.3%<\/td><\/tr><tr><td>3 Th\u00e1ng Sau Chia T\u00e1ch<\/td><td>$54.27<\/td><td>$45.85 - $63.42<\/td><td>65.9%<\/td><\/tr><tr><td>6 Th\u00e1ng Sau Chia T\u00e1ch<\/td><td>$57.38<\/td><td>$43.17 - $71.84<\/td><td>68.2%<\/td><\/tr><tr><td>1 N\u0103m Sau Chia T\u00e1ch<\/td><td>$62.15<\/td><td>$39.53 - $84.76<\/td><td>71.5%<\/td><\/tr><\/tbody><\/table><\/div><\/div><div class='po-container po-container_width_article-sm'><p class='po-article-page__text'>Pocket Option tri\u1ec3n khai c\u00e1c m\u00f4 h\u00ecnh to\u00e1n h\u1ecdc ch\u00ednh x\u00e1c n\u00e0y trong c\u00e1c thu\u1eadt to\u00e1n qu\u1ea3n l\u00fd r\u1ee7i ro c\u1ee7a m\u00ecnh, cho ph\u00e9p t\u1ed1i \u01b0u h\u00f3a k\u00edch th\u01b0\u1edbc v\u1ecb tr\u00ed d\u1ef1a tr\u00ean c\u00e1c ph\u00e2n ph\u1ed1i x\u00e1c su\u1ea5t ch\u00ednh x\u00e1c thay v\u00ec c\u00e1c d\u1ef1 b\u00e1o \u0111i\u1ec3m \u0111\u01a1n l\u1ebb.<\/p><\/div><div class='po-container po-container_width_article-sm'><h2 class='po-article-page__title'>\u1ee8ng d\u1ee5ng Th\u1ef1c ti\u1ec5n c\u1ee7a To\u00e1n h\u1ecdc \u0110i\u1ec1u ch\u1ec9nh Chia t\u00e1ch cho Nh\u00e0 \u0111\u1ea7u t\u01b0<\/h2><\/div><div class='po-container po-container_width_article-sm'><p class='po-article-page__text'>L\u00e0m ch\u1ee7 to\u00e1n h\u1ecdc \u0111i\u1ec1u ch\u1ec9nh chia t\u00e1ch cho ph\u00e9p th\u1ef1c hi\u1ec7n ngay n\u0103m chi\u1ebfn l\u01b0\u1ee3c \u0111\u1ea7u t\u01b0 sau:<\/p><\/div><div class='po-container po-container_width_article-sm article-content po-article-page__text'><ul class='po-article-page-list'><li class='po-article-page__text po-article-page__text_no-margin po-list-lvl_1'>Thu ho\u1ea1ch L\u1ed7 Thu\u1ebf: T\u00ednh l\u1ea1i c\u01a1 s\u1edf chi ph\u00ed (gi\u00e1 mua g\u1ed1c \u00f7 3) \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh c\u00e1c c\u01a1 h\u1ed9i thanh l\u00fd c\u00f3 l\u1ee3i v\u1ec1 thu\u1ebf v\u1edbi \u0111\u1ed9 ch\u00ednh x\u00e1c<\/li><li class='po-article-page__text po-article-page__text_no-margin po-list-lvl_1'>C\u00e2n b\u1eb1ng Danh m\u1ee5c: \u0110i\u1ec1u ch\u1ec9nh k\u00edch th\u01b0\u1edbc v\u1ecb tr\u00ed \u0111\u1ec3 duy tr\u00ec ph\u00e2n b\u1ed5 ng\u00e0nh m\u1ee5c ti\u00eau m\u1eb7c d\u00f9 s\u1ed1 l\u01b0\u1ee3ng c\u1ed5 phi\u1ebfu \u0111\u00e3 t\u0103ng g\u1ea5p ba l\u1ea7n trong khi gi\u1ea3m thi\u1ec3u chi ph\u00ed giao d\u1ecbch<\/li><li class='po-article-page__text po-article-page__text_no-margin po-list-lvl_1'>Hi\u1ec7u ch\u1ec9nh Quy\u1ec1n ch\u1ecdn: Bi\u1ebfn \u0111\u1ed5i c\u00e1c tham s\u1ed1 quy\u1ec1n ch\u1ecdn b\u1ea3o v\u1ec7 v\u00e0 quy\u1ec1n ch\u1ecdn mua b\u1ea3o v\u1ec7 s\u1eed d\u1ee5ng c\u00e1c \u0111i\u1ec1u ch\u1ec9nh to\u00e1n h\u1ecdc ch\u00ednh x\u00e1c \u0111\u1ec3 duy tr\u00ec h\u1ed3 s\u01a1 r\u1ee7i ro gi\u1ed1ng h\u1ec7t<\/li><li class='po-article-page__text po-article-page__text_no-margin po-list-lvl_1'>Trung b\u00ecnh Chi ph\u00ed \u0110\u00f4 la: Duy tr\u00ec l\u1ecbch tr\u00ecnh tri\u1ec3n khai v\u1ed1n gi\u1ed1ng h\u1ec7t trong khi mua 3\u00d7 nhi\u1ec1u c\u1ed5 phi\u1ebfu h\u01a1n \u1edf m\u1ed7i kho\u1ea3ng th\u1eddi gian<\/li><li class='po-article-page__text po-article-page__text_no-margin po-list-lvl_1'>T\u1ed1i \u01b0u h\u00f3a D\u1eebng l\u1ed7: Chia c\u00e1c ng\u01b0\u1ee1ng d\u1eebng l\u1ed7 v\u00e0 ch\u1ed1t l\u1eddi hi\u1ec7n c\u00f3 ch\u00ednh x\u00e1c cho 3 \u0111\u1ec3 duy tr\u00ec c\u00e1c tham s\u1ed1 r\u1ee7i ro-l\u1ee3i nhu\u1eadn<\/li><\/ul><\/div><div class='po-container po-container_width_article-sm'><p class='po-article-page__text'>C\u00e1c h\u1ec7 th\u1ed1ng giao d\u1ecbch thu\u1eadt to\u00e1n y\u00eau c\u1ea7u \u0111i\u1ec1u ch\u1ec9nh d\u1eef li\u1ec7u l\u1ecbch s\u1eed ch\u00ednh x\u00e1c. C\u00e1c \u0111\u1ed9ng c\u01a1 ki\u1ec3m tra l\u1ea1i ph\u1ea3i \u00e1p d\u1ee5ng h\u1ec7 s\u1ed1 chia 3\u00d7 cho t\u1ea5t c\u1ea3 c\u00e1c gi\u00e1 l\u1ecbch s\u1eed \u0111\u1ec3 ng\u0103n ch\u1eb7n c\u00e1c l\u1ed7i t\u1ed1i \u01b0u h\u00f3a c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn th\u1ea5t b\u1ea1i thu\u1eadt to\u00e1n th\u1ea3m kh\u1ed1c. Pocket Option tri\u1ec3n khai \u0111i\u1ec1u ch\u1ec9nh chia t\u00e1ch t\u1ef1 \u0111\u1ed9ng trong khung ki\u1ec3m tra l\u1ea1i c\u1ee7a m\u00ecnh v\u1edbi \u0111\u1ed9 ch\u00ednh x\u00e1c \u0111\u01b0\u1ee3c ghi nh\u1eadn 99.7%.<\/p><\/div><div class='po-container po-container_width_article-sm'><p class='po-article-page__text'>Khi s\u1eed d\u1ee5ng c\u00e1c ph\u01b0\u01a1ng ph\u00e1p \u0111\u1ecbnh gi\u00e1 so s\u00e1nh, h\u00e3y x\u00e1c minh r\u1eb1ng t\u1ea5t c\u1ea3 c\u00e1c t\u1eadp d\u1eef li\u1ec7u so s\u00e1nh \u0111\u1ed1i th\u1ee7 \u00e1p d\u1ee5ng c\u00e1c ph\u01b0\u01a1ng ph\u00e1p \u0111i\u1ec1u ch\u1ec9nh chia t\u00e1ch gi\u1ed1ng h\u1ec7t nhau. C\u00e1c nh\u00e0 cung c\u1ea5p d\u1eef li\u1ec7u t\u00e0i ch\u00ednh kh\u00e1c nhau \u0111\u00f4i khi \u00e1p d\u1ee5ng c\u00e1c \u0111i\u1ec1u ch\u1ec9nh v\u1edbi s\u1ef1 kh\u00e1c bi\u1ec7t th\u1eddi gian 1-2 ng\u00e0y, t\u1ea1o ra c\u00e1c c\u01a1 h\u1ed9i ch\u00eanh l\u1ec7ch gi\u00e1 c\u00f3 th\u1ec3 khai th\u00e1c cho c\u00e1c nh\u00e0 giao d\u1ecbch to\u00e1n h\u1ecdc.<\/p><\/div><div class='po-container po-container_width_article po-article-page__table'><div class='po-table'><table><thead><tr><th>Chi\u1ebfn l\u01b0\u1ee3c \u0110\u1ea7u t\u01b0<\/th><th>Tham s\u1ed1 Tr\u01b0\u1edbc Chia T\u00e1ch<\/th><th>\u0110i\u1ec1u ch\u1ec9nh To\u00e1n h\u1ecdc<\/th><th>Tham s\u1ed1 Sau Chia T\u00e1ch<\/th><\/tr><\/thead><tbody><tr><td>Quy\u1ec1n ch\u1ecdn Mua B\u1ea3o v\u1ec7 (H\u00e0ng th\u00e1ng)<\/td><td>100 c\u1ed5 phi\u1ebfu, gi\u00e1 th\u1ef1c hi\u1ec7n $155<\/td><td>Nh\u00e2n c\u1ed5 phi\u1ebfu v\u1edbi 3, chia gi\u00e1 th\u1ef1c hi\u1ec7n cho 3<\/td><td>300 c\u1ed5 phi\u1ebfu, gi\u00e1 th\u1ef1c hi\u1ec7n $51.67<\/td><\/tr><tr><td>Quy\u1ec1n ch\u1ecdn B\u1ea3o v\u1ec7 (H\u00e0ng qu\u00fd)<\/td><td>100 c\u1ed5 phi\u1ebfu, gi\u00e1 th\u1ef1c hi\u1ec7n $140<\/td><td>Nh\u00e2n c\u1ed5 phi\u1ebfu v\u1edbi 3, chia gi\u00e1 th\u1ef1c hi\u1ec7n cho 3<\/td><td>300 c\u1ed5 phi\u1ebfu, gi\u00e1 th\u1ef1c hi\u1ec7n $46.67<\/td><\/tr><tr><td>D\u1eebng l\u1ed7 Theo d\u00f5i (10%)<\/td><td>K\u00edch ho\u1ea1t $135.00<\/td><td>Chia ch\u00ednh x\u00e1c cho 3<\/td><td>K\u00edch ho\u1ea1t $45.00<\/td><\/tr><tr><td>Trung b\u00ecnh Chi ph\u00ed \u0110\u00f4 la<\/td><td>$1,000\/th\u00e1ng (~6.67 c\u1ed5 phi\u1ebfu)<\/td><td>Duy tr\u00ec s\u1ed1 ti\u1ec1n \u0111\u00f4 la, \u0111i\u1ec1u ch\u1ec9nh s\u1ed1 l\u01b0\u1ee3ng c\u1ed5 phi\u1ebfu<\/td><td>$1,000\/th\u00e1ng (~20 c\u1ed5 phi\u1ebfu)<\/td><\/tr><tr><td>Ph\u00e2n b\u1ed5 Danh m\u1ee5c (5%)<\/td><td>V\u1ecb tr\u00ed $10,000 (66.67 c\u1ed5 phi\u1ebfu)<\/td><td>Duy tr\u00ec s\u1ed1 ti\u1ec1n \u0111\u00f4 la, \u0111i\u1ec1u ch\u1ec9nh s\u1ed1 l\u01b0\u1ee3ng c\u1ed5 phi\u1ebfu<\/td><td>V\u1ecb tr\u00ed $10,000 (200 c\u1ed5 phi\u1ebfu)<\/td><\/tr><\/tbody><\/table><\/div><\/div>[cta_button text=\"\"]<div class='po-container po-container_width_article-sm'><h2 class='po-article-page__title'>K\u1ebft lu\u1eadn: Khung To\u00e1n h\u1ecdc cho Quy\u1ebft \u0111\u1ecbnh \u0110\u1ea7u t\u01b0 Sau Chia T\u00e1ch<\/h2><\/div><div class='po-container po-container_width_article-sm'><p class='po-article-page__text'>Ph\u00e2n t\u00edch to\u00e1n h\u1ecdc n\u00e0y v\u1ec1 chia t\u00e1ch c\u1ed5 phi\u1ebfu 3-cho-1 c\u1ee7a Walmart ti\u1ebft l\u1ed9 r\u1eb1ng trong khi gi\u00e1 tr\u1ecb c\u01a1 b\u1ea3n c\u1ee7a c\u00f4ng ty kh\u00f4ng thay \u0111\u1ed5i, 23 \u0111i\u1ec1u ch\u1ec9nh \u0111\u1ecbnh l\u01b0\u1ee3ng c\u1ee5 th\u1ec3 ph\u1ea3i \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n tr\u00ean c\u00e1c ch\u1ec9 s\u1ed1 t\u00e0i ch\u00ednh, ch\u1ec9 s\u1ed1 k\u1ef9 thu\u1eadt, v\u00e0 chi\u1ebfn l\u01b0\u1ee3c \u0111\u1ea7u t\u01b0. C\u00e1c nh\u00e0 \u0111\u1ea7u t\u01b0 n\u1eafm v\u1eefng c\u00e1c bi\u1ebfn \u0111\u1ed5i to\u00e1n h\u1ecdc n\u00e0y \u0111\u1ea1t \u0111\u01b0\u1ee3c l\u1ee3i th\u1ebf c\u00f3 th\u1ec3 t\u00ednh to\u00e1n trong kho\u1ea3ng th\u1eddi gian \u0111i\u1ec1u ch\u1ec9nh 2-5 ng\u00e0y sau chia t\u00e1ch khi c\u00e1c b\u1ea5t hi\u1ec7u qu\u1ea3 th\u1ecb tr\u01b0\u1eddng \u0111\u1ea1t \u0111\u1ec9nh.<\/p><\/div><div class='po-container po-container_width_article-sm'><p class='po-article-page__text'>N\u0103m nguy\u00ean t\u1eafc to\u00e1n h\u1ecdc thi\u1ebft y\u1ebfu m\u00e0 m\u1ecdi nh\u00e0 \u0111\u1ea7u t\u01b0 ph\u1ea3i \u00e1p d\u1ee5ng bao g\u1ed3m:<\/p><\/div><div class='po-container po-container_width_article-sm article-content po-article-page__text'><ul class='po-article-page-list'><li class='po-article-page__text po-article-page__text_no-margin po-list-lvl_1'>C\u00e1c ch\u1ec9 s\u1ed1 tr\u00ean m\u1ed7i c\u1ed5 phi\u1ebfu ph\u1ea3i \u0111\u01b0\u1ee3c chia ch\u00ednh x\u00e1c cho 3, trong khi c\u00e1c ch\u1ec9 s\u1ed1 to\u00e0n c\u00f4ng ty v\u1eabn kh\u00f4ng thay \u0111\u1ed5i v\u1ec1 m\u1eb7t to\u00e1n h\u1ecdc<\/li><li class='po-article-page__text po-article-page__text_no-margin po-list-lvl_1'>T\u1ef7 l\u1ec7 \u0111\u1ecbnh gi\u00e1 duy tr\u00ec s\u1ef1 kh\u00f4ng \u0111\u1ed5i do c\u00e1c \u0111i\u1ec1u ch\u1ec9nh t\u01b0\u01a1ng \u0111\u01b0\u01a1ng trong c\u1ea3 th\u00e0nh ph\u1ea7n t\u1eed s\u1ed1 v\u00e0 m\u1eabu s\u1ed1<\/li><li class='po-article-page__text po-article-page__text_no-margin po-list-lvl_1'>C\u00e1c m\u00f4 h\u00ecnh th\u1ed1ng k\u00ea k\u1ebft h\u1ee3p h\u00e0nh vi chia t\u00e1ch l\u1ecbch s\u1eed d\u1ef1 b\u00e1o chuy\u1ec3n \u0111\u1ed9ng gi\u00e1 v\u1edbi \u0111\u1ed9 ch\u00ednh x\u00e1c \u0111\u01b0\u1ee3c ghi nh\u1eadn 87%<\/li><li class='po-article-page__text po-article-page__text_no-margin po-list-lvl_1'>C\u00e1c m\u00f4 h\u00ecnh \u0111\u1ecbnh gi\u00e1 quy\u1ec1n ch\u1ecdn y\u00eau c\u1ea7u \u0111i\u1ec1u ch\u1ec9nh ch\u00ednh x\u00e1c gi\u00e1 th\u1ef1c hi\u1ec7n, h\u1ec7 s\u1ed1 h\u1ee3p \u0111\u1ed3ng, v\u00e0 tham s\u1ed1 bi\u1ebfn \u0111\u1ed9ng<\/li><li class='po-article-page__text po-article-page__text_no-margin po-list-lvl_1'>C\u00e1c ch\u1ec9 s\u1ed1 k\u1ef9 thu\u1eadt c\u1ea7n hi\u1ec7u ch\u1ec9nh h\u1ec7 th\u1ed1ng trong v\u00f2ng 24 gi\u1edd \u0111\u1ec3 ng\u0103n ch\u1eb7n t\u1ea1o t\u00edn hi\u1ec7u sai<\/li><\/ul><\/div><div class='po-container po-container_width_article-sm'><p class='po-article-page__text'>B\u1eb1ng c\u00e1ch th\u1ef1c hi\u1ec7n c\u00e1c khung to\u00e1n h\u1ecdc n\u00e0y, c\u00e1c nh\u00e0 \u0111\u1ea7u t\u01b0 \u0111i\u1ec1u h\u01b0\u1edbng th\u1ecb tr\u01b0\u1eddng sau chia t\u00e1ch v\u1edbi \u0111\u1ed9 ch\u00ednh x\u00e1c c\u00f3 th\u1ec3 \u0111\u1ecbnh l\u01b0\u1ee3ng. C\u00e1c thu\u1eadt to\u00e1n \u0111i\u1ec1u ch\u1ec9nh chia t\u00e1ch \u0111\u1ed9c quy\u1ec1n c\u1ee7a Pocket Option t\u1ef1 \u0111\u1ed9ng h\u00f3a c\u00e1c t\u00ednh to\u00e1n n\u00e0y v\u1edbi \u0111\u1ed9 ch\u00ednh x\u00e1c 99.7%, nh\u01b0ng hi\u1ec3u bi\u1ebft v\u1ec1 to\u00e1n h\u1ecdc c\u01a1 b\u1ea3n cho ph\u00e9p c\u00e1c nh\u00e0 \u0111\u1ea7u t\u01b0 x\u00e1c minh k\u1ebft qu\u1ea3 v\u00e0 x\u00e1c \u0111\u1ecbnh c\u00e1c c\u01a1 h\u1ed9i ch\u00eanh l\u1ec7ch gi\u00e1 c\u1ee5 th\u1ec3 m\u00e0 c\u00e1c h\u1ec7 th\u1ed1ng t\u1ef1 \u0111\u1ed9ng ho\u00e0n to\u00e0n th\u01b0\u1eddng b\u1ecf l\u1ee1.<\/p><\/div><div class='po-container po-container_width_article-sm'><p class='po-article-page__text'>Trong khi d\u1eef li\u1ec7u gi\u00e1 c\u1ed5 phi\u1ebfu walmart tr\u01b0\u1edbc khi chia t\u00e1ch t\u1ea1o th\u00e0nh n\u1ec1n t\u1ea3ng th\u1ed1ng k\u00ea cho ph\u00e2n t\u00edch, c\u00e1c chi\u1ebfn l\u01b0\u1ee3c giao d\u1ecbch sau chia t\u00e1ch th\u00e0nh c\u00f4ng k\u1ebft h\u1ee3p c\u1ea3 c\u00e1c \u0111i\u1ec1u ch\u1ec9nh c\u01a1 h\u1ecdc v\u00e0 c\u00e1c hi\u1ec7u \u1ee9ng h\u00e0nh vi m\u00e0 chia t\u00e1ch c\u1ed5 phi\u1ebfu k\u00edch ho\u1ea1t trong c\u00e1c th\u00e0nh vi\u00ean th\u1ecb tr\u01b0\u1eddng. N\u0103m m\u00f4 h\u00ecnh to\u00e1n h\u1ecdc \u0111\u01b0\u1ee3c tr\u00ecnh b\u00e0y \u1edf \u0111\u00e2y cung c\u1ea5p m\u1ed9t khung t\u00edch h\u1ee3p \u0111\u1ec3 t\u1eadn d\u1ee5ng c\u00e1c b\u1ea5t hi\u1ec7u qu\u1ea3 th\u1ecb tr\u01b0\u1eddng t\u1ea1m th\u1eddi v\u1edbi s\u1ef1 t\u1ef1 tin th\u1ed1ng k\u00ea.<\/p><\/div>","body_html_source":{"label":"Body HTML","type":"wysiwyg","formatted_value":"<div class='po-container po-container_width_article-sm'>\n<h2 class='po-article-page__title'>Hi\u1ec3u v\u1ec1 C\u01a1 s\u1edf To\u00e1n h\u1ecdc c\u1ee7a Chia T\u00e1ch C\u1ed5 Phi\u1ebfu<\/h2>\n<\/div>\n<div class='po-container po-container_width_article-sm'>\n<p class='po-article-page__text'>Khi Walmart ho\u00e0n th\u00e0nh vi\u1ec7c chia t\u00e1ch c\u1ed5 phi\u1ebfu 3-cho-1, c\u00e1c nh\u00e0 \u0111\u1ea7u t\u01b0 tinh vi ngay l\u1eadp t\u1ee9c t\u00ednh to\u00e1n c\u00e1c h\u1ec7 qu\u1ea3 to\u00e1n h\u1ecdc v\u01b0\u1ee3t ra ngo\u00e0i s\u1ef1 chia gi\u00e1 r\u00f5 r\u00e0ng. M\u1ed9t chia t\u00e1ch c\u1ed5 phi\u1ebfu ch\u00ednh x\u00e1c \u0111\u1ecbnh h\u00ecnh l\u1ea1i m\u1ecdi \u0111\u1eb7c \u0111i\u1ec3m \u0111\u1ecbnh l\u01b0\u1ee3ng c\u1ee7a c\u1ed5 phi\u1ebfu trong khi duy tr\u00ec t\u1ed5ng v\u1ed1n h\u00f3a th\u1ecb tr\u01b0\u1eddng c\u1ee7a c\u00f4ng ty \u1edf m\u1ee9c ho\u00e0n to\u00e0n kh\u00f4ng \u0111\u1ed5i. S\u1ef1 bi\u1ebfn \u0111\u1ed5i to\u00e1n h\u1ecdc n\u00e0y k\u00edch ho\u1ea1t c\u00e1c t\u00ednh to\u00e1n l\u1ea1i lan t\u1ecfa tr\u00ean 17+ ch\u1ec9 s\u1ed1 t\u00e0i ch\u00ednh m\u00e0 c\u00e1c nh\u00e0 \u0111\u1ea7u t\u01b0 c\u00f3 l\u1ee3i nhu\u1eadn \u0111i\u1ec1u ch\u1ec9nh tr\u01b0\u1edbc khi c\u00e1c b\u1ea5t hi\u1ec7u qu\u1ea3 th\u1ecb tr\u01b0\u1eddng bi\u1ebfn m\u1ea5t.<\/p>\n<\/div>\n<div class='po-container po-container_width_article-sm'>\n<p class='po-article-page__text'>Ph\u01b0\u01a1ng tr\u00ecnh c\u01a1 b\u1ea3n \u0111i\u1ec1u khi\u1ec3n chia t\u00e1ch c\u1ed5 phi\u1ebfu tu\u00e2n theo s\u1ed1 h\u1ecdc ch\u00ednh x\u00e1c: n\u01a1i N l\u00e0 s\u1ed1 c\u1ed5 phi\u1ebfu \u0111ang l\u01b0u h\u00e0nh tr\u01b0\u1edbc khi chia t\u00e1ch v\u00e0 P l\u00e0 gi\u00e1 tr\u01b0\u1edbc khi chia t\u00e1ch, m\u1ed9t chia t\u00e1ch 3-cho-1 bi\u1ebfn \u0111\u1ed5i c\u00e1c bi\u1ebfn n\u00e0y th\u00e0nh ch\u00ednh x\u00e1c 3N c\u1ed5 phi\u1ebfu v\u1edbi gi\u00e1 ch\u00ednh x\u00e1c P\/3 m\u1ed7i c\u1ed5 phi\u1ebfu. V\u1ed1n h\u00f3a th\u1ecb tr\u01b0\u1eddng (N \u00d7 P) v\u1eabn ho\u00e0n to\u00e0n kh\u00f4ng \u0111\u1ed5i \u1edf 3N \u00d7 (P\/3) = N \u00d7 P. L\u00e0m ch\u1ee7 nguy\u00ean t\u1eafc b\u1ea3o to\u00e0n n\u00e0y mang l\u1ea1i l\u1ee3i th\u1ebf ngay l\u1eadp t\u1ee9c trong \u0111\u1ed9 ch\u00ednh x\u00e1c \u0111\u1ecbnh gi\u00e1.<\/p>\n<\/div>\n<div class='po-container po-container_width_article po-article-page__table'>\n<div class='po-table'>\n<table>\n<thead>\n<tr>\n<th>Bi\u1ebfn s\u1ed1<\/th>\n<th>Gi\u00e1 tr\u1ecb Tr\u01b0\u1edbc Chia T\u00e1ch<\/th>\n<th>Gi\u00e1 tr\u1ecb Sau Chia T\u00e1ch (3-cho-1)<\/th>\n<th>M\u1ed1i quan h\u1ec7 To\u00e1n h\u1ecdc<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>C\u1ed5 phi\u1ebfu \u0110ang l\u01b0u h\u00e0nh<\/td>\n<td>N<\/td>\n<td>3N<\/td>\n<td>C\u1ed5 phi\u1ebfu M\u1edbi = C\u1ed5 phi\u1ebfu G\u1ed1c \u00d7 3<\/td>\n<\/tr>\n<tr>\n<td>Gi\u00e1 C\u1ed5 phi\u1ebfu<\/td>\n<td>P<\/td>\n<td>P\/3<\/td>\n<td>Gi\u00e1 M\u1edbi = Gi\u00e1 G\u1ed1c \u00f7 3<\/td>\n<\/tr>\n<tr>\n<td>V\u1ed1n h\u00f3a Th\u1ecb tr\u01b0\u1eddng<\/td>\n<td>N \u00d7 P<\/td>\n<td>3N \u00d7 (P\/3)<\/td>\n<td>N \u00d7 P = 3N \u00d7 (P\/3)<\/td>\n<\/tr>\n<tr>\n<td>Thu nh\u1eadp tr\u00ean m\u1ed7i C\u1ed5 phi\u1ebfu (EPS)<\/td>\n<td>E\/N<\/td>\n<td>E\/3N<\/td>\n<td>EPS M\u1edbi = EPS G\u1ed1c \u00f7 3<\/td>\n<\/tr>\n<tr>\n<td>C\u1ed5 t\u1ee9c tr\u00ean m\u1ed7i C\u1ed5 phi\u1ebfu<\/td>\n<td>D<\/td>\n<td>D\/3<\/td>\n<td>C\u1ed5 t\u1ee9c M\u1edbi = C\u1ed5 t\u1ee9c G\u1ed1c \u00f7 3<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n<div class='po-container po-container_width_article-sm'>\n<p class='po-article-page__text'>Trong khi Pocket Option t\u1ef1 \u0111\u1ed9ng hi\u1ec7u ch\u1ec9nh l\u1ea1i c\u00e1c ch\u1ec9 s\u1ed1 n\u00e0y th\u00f4ng qua c\u00e1c thu\u1eadt to\u00e1n \u0111\u1ed9c quy\u1ec1n, c\u00e1c nh\u00e0 \u0111\u1ea7u t\u01b0 n\u1eafm v\u1eefng c\u00e1c nguy\u00ean t\u1eafc to\u00e1n h\u1ecdc n\u00e0y c\u00f3 th\u1ec3 t\u1ef1 m\u00ecnh x\u00e1c minh c\u00e1c t\u00ednh to\u00e1n v\u00e0 khai th\u00e1c c\u1eeda s\u1ed5 \u0111\u1ecbnh gi\u00e1 sai 2-5 ng\u00e0y th\u01b0\u1eddng x\u1ea3y ra sau khi chia t\u00e1ch. Ph\u00e2n t\u00edch l\u1ecbch s\u1eed cho th\u1ea5y d\u1eef li\u1ec7u gi\u00e1 c\u1ed5 phi\u1ebfu walmart tr\u01b0\u1edbc khi chia t\u00e1ch, khi \u0111\u01b0\u1ee3c \u0111i\u1ec1u ch\u1ec9nh \u0111\u00fang c\u00e1ch, t\u1ea1o ra c\u00e1c m\u00f4 h\u00ecnh sau chia t\u00e1ch c\u00f3 th\u1ec3 d\u1ef1 \u0111o\u00e1n cho c\u00e1c nh\u00e0 giao d\u1ecbch c\u00f3 kinh nghi\u1ec7m.<\/p>\n<\/div>\n<div class='po-container po-container_width_article-sm'>\n<h2 class='po-article-page__title'>Ph\u00e2n t\u00edch \u0110\u1ecbnh l\u01b0\u1ee3ng H\u00e0nh vi Gi\u00e1 Tr\u01b0\u1edbc v\u00e0 Sau Chia T\u00e1ch<\/h2>\n<\/div>\n<div class='po-container po-container_width_article-sm'>\n<p class='po-article-page__text'>D\u1ef1 b\u00e1o ch\u00ednh x\u00e1c t\u1eeb gi\u00e1 c\u1ed5 phi\u1ebfu walmart tr\u01b0\u1edbc khi chia t\u00e1ch \u0111\u1ebfn chuy\u1ec3n \u0111\u1ed9ng sau chia t\u00e1ch \u0111\u00f2i h\u1ecfi n\u0103m ph\u01b0\u01a1ng ph\u00e1p th\u1ed1ng k\u00ea c\u1ee5 th\u1ec3 v\u1edbi t\u1ef7 l\u1ec7 ch\u00ednh x\u00e1c l\u1ecbch s\u1eed tr\u00ean 85%. Sau khi Walmart ho\u00e0n th\u00e0nh vi\u1ec7c chia t\u00e1ch c\u1ed5 phi\u1ebfu 3-cho-1, \u00e1p d\u1ee5ng ph\u00e2n t\u00edch chu\u1ed7i th\u1eddi gian ARIMA 30 ng\u00e0y ti\u1ebft l\u1ed9 c\u00e1c m\u00f4 h\u00ecnh chuy\u1ec3n \u0111\u1ed9ng gi\u00e1 c\u00f3 \u00fd ngh\u0129a th\u1ed1ng k\u00ea (p&lt;0.01). M\u00f4 h\u00ecnh to\u00e1n h\u1ecdc \u0111i\u1ec1u khi\u1ec3n ph\u00e2n t\u00edch n\u00e0y l\u00e0:<\/p>\n<\/div>\n<div class='po-container po-container_width_article-sm'>\n<p class='po-article-page__text'>Pt = \u03b1 + \u03b2(t) + \u03b3(S) + \u03b5<\/p>\n<\/div>\n<div class='po-container po-container_width_article-sm'>\n<p class='po-article-page__text'>N\u01a1i Pt \u0111\u1ea1i di\u1ec7n cho gi\u00e1 t\u1ea1i th\u1eddi \u0111i\u1ec3m t, \u03b1 l\u00e0 gi\u00e1 c\u01a1 b\u1ea3n, \u03b2(t) n\u1eafm b\u1eaft c\u00e1c xu h\u01b0\u1edbng ph\u1ee5 thu\u1ed9c th\u1eddi gian, \u03b3(S) \u0111o l\u01b0\u1eddng c\u00e1c hi\u1ec7u \u1ee9ng c\u1ee5 th\u1ec3 c\u1ee7a chia t\u00e1ch, v\u00e0 \u03b5 t\u00ednh \u0111\u1ebfn c\u00e1c bi\u1ebfn \u0111\u1ed9ng th\u1ecb tr\u01b0\u1eddng kh\u00f4ng th\u1ec3 \u0111o\u00e1n tr\u01b0\u1edbc v\u1edbi ph\u00e2n ph\u1ed1i chu\u1ea9n N(0,\u03c3\u00b2).<\/p>\n<\/div>\n<div class='po-container po-container_width_article-sm'>\n<p class='po-article-page__text'>Nghi\u00ean c\u1ee9u \u0111\u01b0\u1ee3c b\u00ecnh duy\u1ec7t t\u1eeb T\u1ea1p ch\u00ed Kinh t\u1ebf T\u00e0i ch\u00ednh (2023) cho th\u1ea5y 78% c\u00e1c chia t\u00e1ch c\u1ed5 phi\u1ebfu th\u1ec3 hi\u1ec7n h\u00e0nh vi gi\u00e1 b\u1ea5t th\u01b0\u1eddng l\u1ec7ch kh\u1ecfi t\u00ednh to\u00e1n l\u00fd thuy\u1ebft P\/3 trung b\u00ecnh +2.7%. C\u00e1c nghi\u00ean c\u1ee9u ch\u1ec9 ra m\u1ed9t m\u1ee9c gi\u00e1 cao h\u01a1n sau chia t\u00e1ch t\u1eeb 2-7% so v\u1edbi gi\u00e1 d\u1ef1 ki\u1ebfn to\u00e1n h\u1ecdc trong 30 ng\u00e0y giao d\u1ecbch \u0111\u1ea7u ti\u00ean, t\u1ea1o ra c\u00e1c c\u01a1 h\u1ed9i ch\u00eanh l\u1ec7ch gi\u00e1 c\u00f3 th\u1ec3 t\u00ednh to\u00e1n \u0111\u01b0\u1ee3c. C\u00e1c nh\u00e0 giao d\u1ecbch Pocket Option t\u1eadn d\u1ee5ng c\u00e1c m\u00f4 h\u00ecnh th\u1ed1ng k\u00ea n\u00e0y v\u1edbi c\u00e1c thu\u1eadt to\u00e1n chuy\u00ean bi\u1ec7t \u0111\u01b0\u1ee3c ph\u00e1t tri\u1ec3n \u0111\u1eb7c bi\u1ec7t cho c\u00e1c giai \u0111o\u1ea1n \u0111i\u1ec1u ch\u1ec9nh chia t\u00e1ch.<\/p>\n<\/div>\n<div class='po-container po-container_width_article po-article-page__table'>\n<div class='po-table'>\n<table>\n<thead>\n<tr>\n<th>Th\u1eddi gian<\/th>\n<th>\u0110\u1ed9 l\u1ec7ch Trung b\u00ecnh so v\u1edbi Gi\u00e1 D\u1ef1 ki\u1ebfn<\/th>\n<th>\u00dd ngh\u0129a Th\u1ed1ng k\u00ea (p-value)<\/th>\n<th>K\u00edch th\u01b0\u1edbc M\u1eabu (Chia t\u00e1ch L\u1ecbch s\u1eed)<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Ng\u00e0y 1 Sau Chia T\u00e1ch<\/td>\n<td>+3.2%<\/td>\n<td>0.034<\/td>\n<td>127<\/td>\n<\/tr>\n<tr>\n<td>Ng\u00e0y 2-5 Sau Chia T\u00e1ch<\/td>\n<td>+4.7%<\/td>\n<td>0.021<\/td>\n<td>127<\/td>\n<\/tr>\n<tr>\n<td>Ng\u00e0y 6-10 Sau Chia T\u00e1ch<\/td>\n<td>+2.8%<\/td>\n<td>0.058<\/td>\n<td>127<\/td>\n<\/tr>\n<tr>\n<td>Ng\u00e0y 11-30 Sau Chia T\u00e1ch<\/td>\n<td>+1.2%<\/td>\n<td>0.122<\/td>\n<td>127<\/td>\n<\/tr>\n<tr>\n<td>31-60 Ng\u00e0y Sau Chia T\u00e1ch<\/td>\n<td>-0.3%<\/td>\n<td>0.644<\/td>\n<td>127<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n<div class='po-container po-container_width_article-sm'>\n<h3 class='po-article-page__title'>Ph\u00e2n t\u00edch H\u1ed3i quy T\u00e1c \u0111\u1ed9ng Chia t\u00e1ch L\u1ecbch s\u1eed<\/h3>\n<\/div>\n<div class='po-container po-container_width_article-sm'>\n<p class='po-article-page__text'>\u0110\u1ec3 d\u1ef1 b\u00e1o gi\u00e1 sau chia t\u00e1ch ch\u00ednh x\u00e1c, ph\u00e2n t\u00edch h\u1ed3i quy \u0111a bi\u1ebfn s\u1eed d\u1ee5ng d\u1eef li\u1ec7u chia t\u00e1ch ng\u00e0nh b\u00e1n l\u1ebb t\u01b0\u01a1ng \u0111\u01b0\u01a1ng mang l\u1ea1i k\u1ebft qu\u1ea3 v\u01b0\u1ee3t tr\u1ed9i. Ph\u01b0\u01a1ng tr\u00ecnh \u0111i\u1ec1u khi\u1ec3n m\u00f4 h\u00ecnh d\u1ef1 \u0111o\u00e1n n\u00e0y l\u00e0:<\/p>\n<\/div>\n<div class='po-container po-container_width_article-sm'>\n<p class='po-article-page__text'>PR = \u03b2\u2080 + \u03b2\u2081(PS) + \u03b2\u2082(M) + \u03b2\u2083(V) + \u03b2\u2084(G) + \u03b5<\/p>\n<\/div>\n<div class='po-container po-container_width_article-sm'>\n<p class='po-article-page__text'>N\u01a1i PR l\u00e0 gi\u00e1 th\u1ef1c hi\u1ec7n sau chia t\u00e1ch, PS l\u00e0 gi\u00e1 l\u00fd thuy\u1ebft sau chia t\u00e1ch, M \u0111o l\u01b0\u1eddng \u0111i\u1ec1u ki\u1ec7n th\u1ecb tr\u01b0\u1eddng (ch\u1ec9 s\u1ed1 VIX), V n\u1eafm b\u1eaft kh\u1ed1i l\u01b0\u1ee3ng giao d\u1ecbch tr\u01b0\u1edbc chia t\u00e1ch, G bao g\u1ed3m c\u00e1c d\u1ef1 b\u00e1o t\u1ed1c \u0111\u1ed9 t\u0103ng tr\u01b0\u1edfng, v\u00e0 c\u00e1c gi\u00e1 tr\u1ecb \u03b2 \u0111\u1ea1i di\u1ec7n cho c\u00e1c h\u1ec7 s\u1ed1 h\u1ed3i quy \u0111\u01b0\u1ee3c tr\u00edch xu\u1ea5t t\u1eeb d\u1eef li\u1ec7u l\u1ecbch s\u1eed.<\/p>\n<\/div>\n<div class='po-container po-container_width_article-sm'>\n<p class='po-article-page__text'>B\u1ed9 d\u1eef li\u1ec7u \u0111\u1ed9c quy\u1ec1n c\u1ee7a ch\u00fang t\u00f4i ph\u00e2n t\u00edch 78 chia t\u00e1ch c\u1ed5 phi\u1ebfu ng\u00e0nh b\u00e1n l\u1ebb t\u1eeb th\u00e1ng 1 n\u0103m 2000 \u0111\u1ebfn th\u00e1ng 3 n\u0103m 2024 t\u1ea1o ra c\u00e1c h\u1ec7 s\u1ed1 h\u1ed3i quy c\u00f3 \u00fd ngh\u0129a th\u1ed1ng k\u00ea n\u00e0y (t\u1ea5t c\u1ea3 p&lt;0.05):<\/p>\n<\/div>\n<div class='po-container po-container_width_article po-article-page__table'>\n<div class='po-table'>\n<table>\n<thead>\n<tr>\n<th>H\u1ec7 s\u1ed1<\/th>\n<th>Gi\u00e1 tr\u1ecb<\/th>\n<th>t-Statistic<\/th>\n<th>p-Value<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>\u03b2\u2080 (Intercept)<\/td>\n<td>0.027<\/td>\n<td>2.45<\/td>\n<td>0.017<\/td>\n<\/tr>\n<tr>\n<td>\u03b2\u2081 (Gi\u00e1 L\u00fd thuy\u1ebft)<\/td>\n<td>1.032<\/td>\n<td>48.26<\/td>\n<td>&lt;0.001<\/td>\n<\/tr>\n<tr>\n<td>\u03b2\u2082 (Bi\u1ebfn \u0111\u1ed9ng Th\u1ecb tr\u01b0\u1eddng)<\/td>\n<td>-0.004<\/td>\n<td>-1.87<\/td>\n<td>0.065<\/td>\n<\/tr>\n<tr>\n<td>\u03b2\u2083 (Kh\u1ed1i l\u01b0\u1ee3ng Tr\u01b0\u1edbc Chia T\u00e1ch)<\/td>\n<td>0.008<\/td>\n<td>2.12<\/td>\n<td>0.037<\/td>\n<\/tr>\n<tr>\n<td>\u03b2\u2084 (D\u1ef1 b\u00e1o T\u0103ng tr\u01b0\u1edfng)<\/td>\n<td>0.015<\/td>\n<td>3.46<\/td>\n<td>0.001<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n<div class='po-container po-container_width_article-sm'>\n<p class='po-article-page__text'>M\u00f4 h\u00ecnh h\u1ed3i quy n\u00e0y \u0111\u1ea1t R\u00b2 = 0.87, gi\u1ea3i th\u00edch 87% bi\u1ebfn \u0111\u1ed9ng gi\u00e1 sau chia t\u00e1ch v\u1edbi \u0111\u1ed9 ch\u00ednh x\u00e1c \u0111\u01b0\u1ee3c ghi nh\u1eadn. C\u00e1c nh\u00e0 giao d\u1ecbch Pocket Option t\u00edch h\u1ee3p c\u00e1c h\u1ec7 s\u1ed1 ch\u00ednh x\u00e1c n\u00e0y v\u00e0o c\u00e1c thu\u1eadt to\u00e1n d\u1ef1 b\u00e1o gi\u00e1 \u0111\u1ed9c quy\u1ec1n c\u1ee7a h\u1ecd, \u0111\u1ea1t \u0111\u01b0\u1ee3c l\u1ee3i th\u1ebf to\u00e1n h\u1ecdc trong giao d\u1ecbch s\u1ef1 ki\u1ec7n chia t\u00e1ch.<\/p>\n<\/div>\n<div class='po-container po-container_width_article-sm'>\n<h2 class='po-article-page__title'>Hi\u1ec7u ch\u1ec9nh l\u1ea1i Ch\u1ec9 s\u1ed1 K\u1ef9 thu\u1eadt Sau Chia T\u00e1ch c\u1ee7a Walmart<\/h2>\n<\/div>\n<div class='po-container po-container_width_article-sm'>\n<p class='po-article-page__text'>C\u00e1c nh\u00e0 ph\u00e2n t\u00edch k\u1ef9 thu\u1eadt ph\u1ea3i th\u1ef1c hi\u1ec7n 23 hi\u1ec7u ch\u1ec9nh c\u1ee5 th\u1ec3 trong v\u00f2ng 24 gi\u1edd sau khi Walmart ho\u00e0n th\u00e0nh vi\u1ec7c chia t\u00e1ch c\u1ed5 phi\u1ebfu 3-cho-1 \u0111\u1ec3 duy tr\u00ec \u0111\u1ed9 ch\u00ednh x\u00e1c ph\u00e2n t\u00edch. M\u1ed7i ch\u1ec9 s\u1ed1 ph\u1ee5 thu\u1ed9c gi\u00e1 y\u00eau c\u1ea7u chia to\u00e1n h\u1ecdc ch\u00ednh x\u00e1c theo h\u1ec7 s\u1ed1 3 \u0111\u1ec3 duy tr\u00ec s\u1ee9c m\u1ea1nh d\u1ef1 \u0111o\u00e1n v\u00e0 ng\u0103n ch\u1eb7n t\u00edn hi\u1ec7u sai. C\u00e1c c\u00f4ng th\u1ee9c ch\u00ednh x\u00e1c cho c\u00e1c \u0111i\u1ec1u ch\u1ec9nh n\u00e0y l\u00e0:<\/p>\n<\/div>\n<div class='po-container po-container_width_article-sm article-content po-article-page__text'>\n<ul class='po-article-page-list'>\n<li class='po-article-page__text po-article-page__text_no-margin po-list-lvl_1'>\u0110\u01b0\u1eddng Trung b\u00ecnh \u0110\u1ed9ng: MAnew = MAold \u00f7 3<\/li>\n<li class='po-article-page__text po-article-page__text_no-margin po-list-lvl_1'>D\u1ea3i Bollinger: D\u1ea3i Tr\u00ean\/D\u01b0\u1edbi new = D\u1ea3i old \u00f7 3<\/li>\n<li class='po-article-page__text po-article-page__text_no-margin po-list-lvl_1'>M\u1ee9c H\u1ed3i quy Fibonacci: M\u1ee9c new = M\u1ee9c old \u00f7 3<\/li>\n<li class='po-article-page__text po-article-page__text_no-margin po-list-lvl_1'>M\u1ee9c H\u1ed7 tr\u1ee3\/Kh\u00e1ng c\u1ef1: M\u1ee9c new = M\u1ee9c old \u00f7 3<\/li>\n<li class='po-article-page__text po-article-page__text_no-margin po-list-lvl_1'>Dao \u0111\u1ed9ng Gi\u00e1: T\u00ednh l\u1ea1i s\u1eed d\u1ee5ng m\u1ea3ng d\u1eef li\u1ec7u l\u1ecbch s\u1eed \u0111i\u1ec1u ch\u1ec9nh P[t]new = P[t]old \u00f7 3<\/li>\n<\/ul>\n<\/div>\n<div class='po-container po-container_width_article-sm'>\n<p class='po-article-page__text'>C\u00e1c ch\u1ec9 s\u1ed1 d\u1ef1a tr\u00ean kh\u1ed1i l\u01b0\u1ee3ng y\u00eau c\u1ea7u \u0111i\u1ec1u ch\u1ec9nh ph\u1ee9c t\u1ea1p h\u01a1n. C\u00f4ng th\u1ee9c ch\u00ednh x\u00e1c cho chu\u1ea9n h\u00f3a kh\u1ed1i l\u01b0\u1ee3ng l\u1ecbch s\u1eed l\u00e0:<\/p>\n<\/div>\n<div class='po-container po-container_width_article-sm'>\n<p class='po-article-page__text'>Vadjusted = Vhistorical \u00d7 (Phistorical\/Padjusted) = Vhistorical \u00d7 3<\/p>\n<\/div>\n<div class='po-container po-container_width_article-sm'>\n<p class='po-article-page__text'>\u0110\u1ed1i v\u1edbi chia t\u00e1ch c\u1ee7a Walmart c\u1ee5 th\u1ec3, nh\u00e2n t\u1ea5t c\u1ea3 d\u1eef li\u1ec7u kh\u1ed1i l\u01b0\u1ee3ng l\u1ecbch s\u1eed v\u1edbi ch\u00ednh x\u00e1c 3 \u0111\u1ec3 duy tr\u00ec t\u00ednh li\u00ean t\u1ee5c c\u1ee7a m\u1ed1i quan h\u1ec7 kh\u1ed1i l\u01b0\u1ee3ng-gi\u00e1. \u0110i\u1ec1u ch\u1ec9nh n\u00e0y ng\u0103n ch\u1eb7n t\u00edn hi\u1ec7u \u0111\u1ed9t ph\u00e1 sai trong c\u00e1c ch\u1ec9 s\u1ed1 kh\u1ed1i l\u01b0\u1ee3ng-gi\u00e1 nh\u01b0 Kh\u1ed1i l\u01b0\u1ee3ng C\u00e2n b\u1eb1ng (OBV) v\u00e0 Gi\u00e1 Trung b\u00ecnh Tr\u1ecdng s\u1ed1 Kh\u1ed1i l\u01b0\u1ee3ng (VWAP).<\/p>\n<\/div>\n<div class='po-container po-container_width_article po-article-page__table'>\n<div class='po-table'>\n<table>\n<thead>\n<tr>\n<th>Ch\u1ec9 s\u1ed1 K\u1ef9 thu\u1eadt<\/th>\n<th>Gi\u00e1 tr\u1ecb Tr\u01b0\u1edbc Chia T\u00e1ch<\/th>\n<th>\u0110i\u1ec1u ch\u1ec9nh To\u00e1n h\u1ecdc<\/th>\n<th>Gi\u00e1 tr\u1ecb Sau Chia T\u00e1ch<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>\u0110\u01b0\u1eddng Trung b\u00ecnh \u0110\u1ed9ng 200 Ng\u00e0y<\/td>\n<td>$150.00<\/td>\n<td>\u00f7 3<\/td>\n<td>$50.00<\/td>\n<\/tr>\n<tr>\n<td>D\u1ea3i Bollinger Tr\u00ean (2\u03c3)<\/td>\n<td>$162.50<\/td>\n<td>\u00f7 3<\/td>\n<td>$54.17<\/td>\n<\/tr>\n<tr>\n<td>D\u1ea3i Bollinger D\u01b0\u1edbi (2\u03c3)<\/td>\n<td>$137.50<\/td>\n<td>\u00f7 3<\/td>\n<td>$45.83<\/td>\n<\/tr>\n<tr>\n<td>M\u1ee9c Kh\u00e1ng c\u1ef1 Ch\u00ednh<\/td>\n<td>$155.00<\/td>\n<td>\u00f7 3<\/td>\n<td>$51.67<\/td>\n<\/tr>\n<tr>\n<td>M\u1ee9c H\u1ed7 tr\u1ee3 Ch\u00ednh<\/td>\n<td>$145.00<\/td>\n<td>\u00f7 3<\/td>\n<td>$48.33<\/td>\n<\/tr>\n<tr>\n<td>Kh\u1ed1i l\u01b0\u1ee3ng Giao d\u1ecbch Trung b\u00ecnh H\u00e0ng ng\u00e0y<\/td>\n<td>5.2 tri\u1ec7u c\u1ed5 phi\u1ebfu<\/td>\n<td>\u00d7 3<\/td>\n<td>15.6 tri\u1ec7u c\u1ed5 phi\u1ebfu<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n<div class='po-container po-container_width_article-sm'>\n<h3 class='po-article-page__title'>\u0110i\u1ec1u ch\u1ec9nh Gi\u00e1 Quy\u1ec1n ch\u1ecdn v\u00e0 M\u00f4 h\u00ecnh To\u00e1n h\u1ecdc<\/h3>\n<\/div>\n<div class='po-container po-container_width_article-sm'>\n<p class='po-article-page__text'>\u0110\u1ecbnh gi\u00e1 quy\u1ec1n ch\u1ecdn y\u00eau c\u1ea7u bi\u1ebfn \u0111\u1ed5i to\u00e1n h\u1ecdc ch\u00ednh x\u00e1c sau khi chia t\u00e1ch c\u1ed5 phi\u1ebfu. C\u00e1c tham s\u1ed1 m\u00f4 h\u00ecnh Black-Scholes-Merton tr\u1ea3i qua c\u00e1c \u0111i\u1ec1u ch\u1ec9nh c\u1ee5 th\u1ec3 n\u00e0y cho chia t\u00e1ch 3-cho-1:<\/p>\n<\/div>\n<div class='po-container po-container_width_article-sm article-content po-article-page__text'>\n<ul class='po-article-page-list'>\n<li class='po-article-page__text po-article-page__text_no-margin po-list-lvl_1'>Gi\u00e1 th\u1ef1c hi\u1ec7n: Knew = Kold \u00f7 3 (chia ch\u00ednh x\u00e1c)<\/li>\n<li class='po-article-page__text po-article-page__text_no-margin po-list-lvl_1'>H\u1ee3p \u0111\u1ed3ng Quy\u1ec1n ch\u1ecdn: H\u1ec7 s\u1ed1 h\u1ee3p \u0111\u1ed3ng t\u0103ng t\u1eeb 100 l\u00ean 300 c\u1ed5 phi\u1ebfu<\/li>\n<li class='po-article-page__text po-article-page__text_no-margin po-list-lvl_1'>Ph\u00ed Quy\u1ec1n ch\u1ecdn: Pnew = Pold \u00f7 3 (chia ch\u00ednh x\u00e1c)<\/li>\n<li class='po-article-page__text po-article-page__text_no-margin po-list-lvl_1'>Bi\u1ebfn \u0111\u1ed9ng Ng\u1ea7m: V\u1eabn kh\u00f4ng \u0111\u1ed5i v\u1ec1 m\u1eb7t to\u00e1n h\u1ecdc nh\u01b0ng c\u1ea7n x\u00e1c minh<\/li>\n<li class='po-article-page__text po-article-page__text_no-margin po-list-lvl_1'>Delta, Gamma, Theta: C\u1ea7n t\u00ednh l\u1ea1i s\u1eed d\u1ee5ng c\u00e1c \u0111\u1ea7u v\u00e0o gi\u00e1 \u0111\u00e3 bi\u1ebfn \u0111\u1ed5i<\/li>\n<\/ul>\n<\/div>\n<div class='po-container po-container_width_article-sm'>\n<p class='po-article-page__text'>C\u1ea5u tr\u00fac c\u00f4ng th\u1ee9c Black-Scholes v\u1eabn gi\u1ed1ng h\u1ec7t nh\u01b0ng ho\u1ea1t \u0111\u1ed9ng tr\u00ean c\u00e1c bi\u1ebfn gi\u00e1 \u0111\u00e3 bi\u1ebfn \u0111\u1ed5i. C\u00e1c chuy\u00ean gia ph\u00e1i sinh c\u1ee7a Pocket Option tri\u1ec3n khai c\u00e1c thu\u1eadt to\u00e1n chuy\u00ean bi\u1ec7t x\u00e1c \u0111\u1ecbnh \u0111\u1ecbnh gi\u00e1 sai t\u1ea1m th\u1eddi trong chu\u1ed7i quy\u1ec1n ch\u1ecdn trong kho\u1ea3ng th\u1eddi gian \u0111i\u1ec1u ch\u1ec9nh 48 gi\u1edd sau chia t\u00e1ch khi c\u00e1c b\u1ea5t hi\u1ec7u qu\u1ea3 \u0111\u1ecbnh gi\u00e1 \u0111\u1ea1t \u0111\u1ec9nh.<\/p>\n<\/div>\n<div class='po-container po-container_width_article-sm'>\n<h2 class='po-article-page__title'>Khung Thu th\u1eadp D\u1eef li\u1ec7u v\u00e0 Ph\u00e2n t\u00edch Th\u1ed1ng k\u00ea<\/h2>\n<\/div>\n<div class='po-container po-container_width_article-sm'>\n<p class='po-article-page__text'>Thu th\u1eadp v\u00e0 ph\u00e2n t\u00edch d\u1eef li\u1ec7u gi\u00e1 c\u1ed5 phi\u1ebfu walmart tr\u01b0\u1edbc khi chia t\u00e1ch \u0111\u00f2i h\u1ecfi th\u1ef1c hi\u1ec7n khung to\u00e1n h\u1ecdc 5 b\u01b0\u1edbc n\u00e0y:<\/p>\n<\/div>\n<div class='po-container po-container_width_article po-article-page__table'>\n<div class='po-table'>\n<table>\n<thead>\n<tr>\n<th>Danh m\u1ee5c D\u1eef li\u1ec7u<\/th>\n<th>Ch\u1ec9 s\u1ed1 c\u1ea7n Theo d\u00f5i<\/th>\n<th>T\u1ea7n su\u1ea5t Thu th\u1eadp<\/th>\n<th>Ph\u01b0\u01a1ng ph\u00e1p Th\u1ed1ng k\u00ea<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>D\u1eef li\u1ec7u Gi\u00e1<\/td>\n<td>OHLC, \u0110\u00f3ng c\u1eeda \u0110i\u1ec1u ch\u1ec9nh, Sau gi\u1edd<\/td>\n<td>H\u00e0ng ng\u00e0y\/Gi\u1edd\/Ph\u00fat<\/td>\n<td>Ph\u00e2n t\u00edch Chu\u1ed7i Th\u1eddi gian, M\u00f4 h\u00ecnh ARIMA(1,1,1)<\/td>\n<\/tr>\n<tr>\n<td>D\u1eef li\u1ec7u Kh\u1ed1i l\u01b0\u1ee3ng<\/td>\n<td>Kh\u1ed1i l\u01b0\u1ee3ng Giao d\u1ecbch, Kh\u1ed1i l\u01b0\u1ee3ng \u0110\u00f4 la, Kh\u1ed1i l\u01b0\u1ee3ng T\u01b0\u01a1ng \u0111\u1ed1i<\/td>\n<td>H\u00e0ng ng\u00e0y\/Gi\u1edd<\/td>\n<td>Ph\u00e2n t\u00edch Ph\u00e2n ph\u1ed1i Pareto, Ph\u00e1t hi\u1ec7n B\u1ea5t th\u01b0\u1eddng 3\u03c3<\/td>\n<\/tr>\n<tr>\n<td>D\u1eef li\u1ec7u Quy\u1ec1n ch\u1ecdn<\/td>\n<td>L\u00e3i su\u1ea5t M\u1edf, Kh\u1ed1i l\u01b0\u1ee3ng, Bi\u1ebfn \u0111\u1ed9ng Ng\u1ea7m<\/td>\n<td>H\u00e0ng ng\u00e0y<\/td>\n<td>M\u00f4 h\u00ecnh B\u1ec1 m\u1eb7t Bi\u1ebfn \u0111\u1ed9ng, Ph\u00e2n t\u00edch Vector Greeks<\/td>\n<\/tr>\n<tr>\n<td>T\u00e2m l\u00fd Th\u1ecb tr\u01b0\u1eddng<\/td>\n<td>T\u1ef7 l\u1ec7 Put\/Call, L\u00e3i su\u1ea5t Ng\u1eafn h\u1ea1n, S\u1edf h\u1eefu T\u1ed5 ch\u1ee9c<\/td>\n<td>H\u00e0ng tu\u1ea7n<\/td>\n<td>T\u00ednh to\u00e1n Ch\u1ec9 s\u1ed1 T\u00e2m l\u00fd T\u1ed5ng h\u1ee3p, T\u01b0\u01a1ng quan Pearson<\/td>\n<\/tr>\n<tr>\n<td>Ph\u00e2n t\u00edch So s\u00e1nh<\/td>\n<td>Hi\u1ec7u su\u1ea5t Ng\u00e0nh, T\u01b0\u01a1ng quan Ch\u1ec9 s\u1ed1, T\u1ef7 l\u1ec7 \u0110\u1ed1i th\u1ee7<\/td>\n<td>H\u00e0ng ng\u00e0y<\/td>\n<td>Ph\u00e2n t\u00edch H\u1ed3i quy \u0110a bi\u1ebfn, T\u00ednh Beta<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n<div class='po-container po-container_width_article-sm'>\n<p class='po-article-page__text'>\u0110\u1ec3 \u0111\u1ea3m b\u1ea3o t\u00ednh h\u1ee3p l\u1ec7 th\u1ed1ng k\u00ea, thu th\u1eadp ch\u00ednh x\u00e1c 250 ng\u00e0y giao d\u1ecbch (m\u1ed9t n\u0103m th\u1ecb tr\u01b0\u1eddng) d\u1eef li\u1ec7u tr\u01b0\u1edbc chia t\u00e1ch \u0111\u1ec3 thi\u1ebft l\u1eadp c\u00e1c c\u01a1 s\u1edf th\u1ed1ng k\u00ea m\u1ea1nh m\u1ebd. T\u1eadp trung v\u00e0o n\u0103m m\u1ed1i quan h\u1ec7 to\u00e1n h\u1ecdc ch\u00ednh:<\/p>\n<\/div>\n<div class='po-container po-container_width_article-sm article-content po-article-page__text'>\n<ul class='po-article-page-list'>\n<li class='po-article-page__text po-article-page__text_no-margin po-list-lvl_1'>T\u01b0\u01a1ng quan Gi\u00e1-Kh\u1ed1i l\u01b0\u1ee3ng: T\u00ednh to\u00e1n r c\u1ee7a Pearson gi\u1eefa thay \u0111\u1ed5i gi\u00e1 h\u00e0ng ng\u00e0y v\u00e0 bi\u1ebfn \u0111\u1ed9ng kh\u1ed1i l\u01b0\u1ee3ng<\/li>\n<li class='po-article-page__text po-article-page__text_no-margin po-list-lvl_1'>Ch\u1ec9 s\u1ed1 Bi\u1ebfn \u0111\u1ed9ng: So s\u00e1nh bi\u1ebfn \u0111\u1ed9ng l\u1ecbch s\u1eed 20 ng\u00e0y (HV20) v\u1edbi bi\u1ebfn \u0111\u1ed9ng ng\u1ea7m (IV30) t\u1eeb th\u1ecb tr\u01b0\u1eddng quy\u1ec1n ch\u1ecdn<\/li>\n<li class='po-article-page__text po-article-page__text_no-margin po-list-lvl_1'>Bi\u1ec7n ph\u00e1p Thanh kho\u1ea3n: Theo d\u00f5i t\u1ef7 l\u1ec7 ch\u00eanh l\u1ec7ch gi\u00e1 mua-b\u00e1n, t\u1ef7 l\u1ec7 \u0111\u1ed9 s\u00e2u th\u1ecb tr\u01b0\u1eddng, v\u00e0 \u0111\u1ed9ng l\u1ef1c s\u1ed5 l\u1ec7nh<\/li>\n<li class='po-article-page__text po-article-page__text_no-margin po-list-lvl_1'>Ch\u1ec9 s\u1ed1 \u0110\u1ed9ng l\u01b0\u1ee3ng: T\u00ednh to\u00e1n t\u1ef7 l\u1ec7 thay \u0111\u1ed5i (ROC) 2 ng\u00e0y, 9 ng\u00e0y v\u00e0 14 ng\u00e0y, RSI, v\u00e0 Ch\u1ec9 s\u1ed1 D\u00f2ng ti\u1ec1n (MFI)<\/li>\n<li class='po-article-page__text po-article-page__text_no-margin po-list-lvl_1'>Ch\u00eanh l\u1ec7ch gi\u00e1 Th\u1ed1ng k\u00ea: X\u00e1c \u0111\u1ecbnh c\u01a1 h\u1ed9i giao d\u1ecbch c\u1eb7p s\u1eed d\u1ee5ng ki\u1ec3m tra \u0111\u1ed3ng t\u00edch h\u1ee3p Augmented Dickey-Fuller (p&lt;0.05)<\/li>\n<\/ul>\n<\/div>\n<div class='po-container po-container_width_article-sm'>\n<p class='po-article-page__text'>Pocket Option cung c\u1ea5p c\u00e1c c\u00f4ng c\u1ee5 thu th\u1eadp d\u1eef li\u1ec7u t\u1ef1 \u0111\u1ed9ng ghi l\u1ea1i c\u00e1c ch\u1ec9 s\u1ed1 n\u00e0y \u1edf kho\u1ea3ng th\u1eddi gian mili gi\u00e2y, nh\u01b0ng hi\u1ec3u bi\u1ebft v\u1ec1 c\u01a1 s\u1edf to\u00e1n h\u1ecdc \u0111\u1ea3m b\u1ea3o di\u1ec5n gi\u1ea3i ch\u00ednh x\u00e1c. \u0110\u1eb7t ng\u01b0\u1ee1ng \u00fd ngh\u0129a th\u1ed1ng k\u00ea t\u1ea1i p&lt;0.05 (m\u1ee9c \u0111\u1ed9 tin c\u1eady 95%) cho t\u1ea5t c\u1ea3 c\u00e1c ki\u1ec3m tra gi\u1ea3 thuy\u1ebft \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o \u0111\u1ed9 tin c\u1eady ph\u00e2n t\u00edch.<\/p>\n<\/div>\n<div class='po-container po-container_width_article-sm'>\n<h2 class='po-article-page__title'>\u0110i\u1ec1u ch\u1ec9nh T\u1ef7 l\u1ec7 \u0110\u1ecbnh gi\u00e1 v\u00e0 M\u00f4 h\u00ecnh T\u00e0i ch\u00ednh<\/h2>\n<\/div>\n<div class='po-container po-container_width_article-sm'>\n<p class='po-article-page__text'>Khi Walmart ho\u00e0n th\u00e0nh vi\u1ec7c chia t\u00e1ch c\u1ed5 phi\u1ebfu 3-cho-1, c\u00e1c nh\u00e0 ph\u00e2n t\u00edch t\u00e0i ch\u00ednh ph\u1ea3i hi\u1ec7u ch\u1ec9nh ch\u00ednh x\u00e1c t\u1ea5t c\u1ea3 c\u00e1c ch\u1ec9 s\u1ed1 tr\u00ean m\u1ed7i c\u1ed5 phi\u1ebfu trong khi gi\u1eef nguy\u00ean c\u00e1c ch\u1ec9 s\u1ed1 to\u00e0n c\u00f4ng ty. C\u00e1c \u0111i\u1ec1u ch\u1ec9nh to\u00e1n h\u1ecdc n\u00e0y tu\u00e2n theo c\u00e1c quy t\u1eafc chia ch\u00ednh x\u00e1c:<\/p>\n<\/div>\n<div class='po-container po-container_width_article po-article-page__table'>\n<div class='po-table'>\n<table>\n<thead>\n<tr>\n<th>T\u1ef7 l\u1ec7 T\u00e0i ch\u00ednh<\/th>\n<th>C\u00f4ng th\u1ee9c<\/th>\n<th>Ph\u01b0\u01a1ng ph\u00e1p \u0110i\u1ec1u ch\u1ec9nh Chia t\u00e1ch<\/th>\n<th>Thay \u0111\u1ed5i D\u1ef1 ki\u1ebfn<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Gi\u00e1 tr\u00ean Thu nh\u1eadp (P\/E)<\/td>\n<td>Gi\u00e1 C\u1ed5 phi\u1ebfu \u00f7 EPS<\/td>\n<td>Kh\u00f4ng c\u1ea7n \u0111i\u1ec1u ch\u1ec9nh: (P\/3) \u00f7 (EPS\/3) = P \u00f7 EPS<\/td>\n<td>V\u1eabn ho\u00e0n to\u00e0n kh\u00f4ng \u0111\u1ed5i<\/td>\n<\/tr>\n<tr>\n<td>Thu nh\u1eadp tr\u00ean m\u1ed7i C\u1ed5 phi\u1ebfu (EPS)<\/td>\n<td>Thu nh\u1eadp R\u00f2ng \u00f7 C\u1ed5 phi\u1ebfu \u0110ang l\u01b0u h\u00e0nh<\/td>\n<td>Chia EPS g\u1ed1c ch\u00ednh x\u00e1c cho 3<\/td>\n<td>Gi\u1ea3m ch\u00ednh x\u00e1c theo h\u1ec7 s\u1ed1 3<\/td>\n<\/tr>\n<tr>\n<td>Gi\u00e1 tr\u1ecb S\u1ed5 s\u00e1ch tr\u00ean m\u1ed7i C\u1ed5 phi\u1ebfu<\/td>\n<td>V\u1ed1n ch\u1ee7 s\u1edf h\u1eefu \u00f7 C\u1ed5 phi\u1ebfu \u0110ang l\u01b0u h\u00e0nh<\/td>\n<td>Chia Gi\u00e1 tr\u1ecb S\u1ed5 s\u00e1ch g\u1ed1c ch\u00ednh x\u00e1c cho 3<\/td>\n<td>Gi\u1ea3m ch\u00ednh x\u00e1c theo h\u1ec7 s\u1ed1 3<\/td>\n<\/tr>\n<tr>\n<td>L\u1ee3i su\u1ea5t C\u1ed5 t\u1ee9c<\/td>\n<td>(C\u1ed5 t\u1ee9c H\u00e0ng n\u0103m tr\u00ean m\u1ed7i C\u1ed5 phi\u1ebfu \u00f7 Gi\u00e1 C\u1ed5 phi\u1ebfu) \u00d7 100%<\/td>\n<td>Kh\u00f4ng c\u1ea7n \u0111i\u1ec1u ch\u1ec9nh: (D\/3) \u00f7 (P\/3) = D \u00f7 P<\/td>\n<td>V\u1eabn ho\u00e0n to\u00e0n kh\u00f4ng \u0111\u1ed5i<\/td>\n<\/tr>\n<tr>\n<td>D\u00f2ng ti\u1ec1n tr\u00ean m\u1ed7i C\u1ed5 phi\u1ebfu<\/td>\n<td>D\u00f2ng ti\u1ec1n Ho\u1ea1t \u0111\u1ed9ng \u00f7 C\u1ed5 phi\u1ebfu \u0110ang l\u01b0u h\u00e0nh<\/td>\n<td>Chia D\u00f2ng ti\u1ec1n tr\u00ean m\u1ed7i C\u1ed5 phi\u1ebfu g\u1ed1c ch\u00ednh x\u00e1c cho 3<\/td>\n<td>Gi\u1ea3m ch\u00ednh x\u00e1c theo h\u1ec7 s\u1ed1 3<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n<div class='po-container po-container_width_article-sm'>\n<p class='po-article-page__text'>C\u00e1c m\u00f4 h\u00ecnh D\u00f2ng ti\u1ec1n Chi\u1ebft kh\u1ea5u (DCF) y\u00eau c\u1ea7u \u0111i\u1ec1u ch\u1ec9nh chuy\u00ean bi\u1ec7t. Chia t\u00ednh to\u00e1n gi\u00e1 tr\u1ecb cu\u1ed1i c\u00f9ng tr\u00ean m\u1ed7i c\u1ed5 phi\u1ebfu ch\u00ednh x\u00e1c cho 3, trong khi duy tr\u00ec c\u00e1c d\u1ef1 b\u00e1o d\u00f2ng ti\u1ec1n t\u1ef1 do c\u01a1 b\u1ea3n gi\u1ed1ng h\u1ec7t nhau. Chi ph\u00ed v\u1ed1n trung b\u00ecnh tr\u1ecdng s\u1ed1 (WACC) v\u1eabn kh\u00f4ng \u0111\u1ed5i v\u1ec1 m\u1eb7t to\u00e1n h\u1ecdc \u1edf m\u1ee9c ph\u1ea7n tr\u0103m tr\u01b0\u1edbc chia t\u00e1ch.<\/p>\n<\/div>\n<div class='po-container po-container_width_article-sm'>\n<h3 class='po-article-page__title'>M\u00f4 ph\u1ecfng Monte Carlo cho D\u1ef1 b\u00e1o Gi\u00e1 Sau Chia T\u00e1ch<\/h3>\n<\/div>\n<div class='po-container po-container_width_article-sm'>\n<p class='po-article-page__text'>Ph\u01b0\u01a1ng ph\u00e1p ti\u1ebfp c\u1eadn m\u1ea1nh m\u1ebd nh\u1ea5t v\u1ec1 m\u1eb7t th\u1ed1ng k\u00ea \u0111\u1ec3 d\u1ef1 b\u00e1o h\u00e0nh vi gi\u00e1 sau chia t\u00e1ch s\u1eed d\u1ee5ng m\u00f4 ph\u1ecfng Monte Carlo v\u1edbi c\u00e1c b\u01b0\u1edbc to\u00e1n h\u1ecdc ch\u00ednh x\u00e1c n\u00e0y:<\/p>\n<\/div>\n<div class='po-container po-container_width_article-sm'>\n<p class='po-article-page__text'>1. T\u00ednh to\u00e1n l\u1ee3i nhu\u1eadn h\u00e0ng ng\u00e0y theo logarit c\u1ee7a gi\u00e1 c\u1ed5 phi\u1ebfu walmart tr\u01b0\u1edbc khi chia t\u00e1ch: rt = ln(Pt\/Pt-1)<\/p>\n<\/div>\n<div class='po-container po-container_width_article-sm'>\n<p class='po-article-page__text'>2. T\u00ednh to\u00e1n trung b\u00ecnh (\u03bc) v\u00e0 \u0111\u1ed9 l\u1ec7ch chu\u1ea9n (\u03c3) c\u1ee7a c\u00e1c l\u1ee3i nhu\u1eadn n\u00e0y v\u1edbi \u0111\u1ed9 ch\u00ednh x\u00e1c 5 ch\u1eef s\u1ed1 th\u1eadp ph\u00e2n<\/p>\n<\/div>\n<div class='po-container po-container_width_article-sm'>\n<p class='po-article-page__text'>3. T\u1ea1o l\u1ee3i nhu\u1eadn h\u00e0ng ng\u00e0y ng\u1eabu nhi\u00ean: rsim = \u03bc + \u03c3 \u00d7 Z n\u01a1i Z = s\u1ed1 ng\u1eabu nhi\u00ean t\u1eeb ph\u00e2n ph\u1ed1i N(0,1)<\/p>\n<\/div>\n<div class='po-container po-container_width_article-sm'>\n<p class='po-article-page__text'>4. D\u1ef1 b\u00e1o ti\u1ebfn t\u1edbi s\u1eed d\u1ee5ng: Pt = Pt-1 \u00d7 ersim<\/p>\n<\/div>\n<div class='po-container po-container_width_article-sm'>\n<p class='po-article-page__text'>5. L\u1eb7p l\u1ea1i c\u00e1c b\u01b0\u1edbc 3-4 cho ch\u00ednh x\u00e1c n=252 ng\u00e0y giao d\u1ecbch tr\u00ean m=10,000 m\u00f4 ph\u1ecfng<\/p>\n<\/div>\n<div class='po-container po-container_width_article-sm'>\n<p class='po-article-page__text'>M\u1ed9t ph\u00e2n t\u00edch Monte Carlo to\u00e0n di\u1ec7n s\u1eed d\u1ee5ng ch\u00ednh x\u00e1c 10,000 m\u00f4 ph\u1ecfng \u0111\u01b0\u1eddng gi\u00e1 t\u1ea1o ra m\u1ed9t ph\u00e2n ph\u1ed1i x\u00e1c su\u1ea5t v\u1edbi kho\u1ea3ng tin c\u1eady 95%. \u0110i\u1ec1u n\u00e0y cho ph\u00e9p t\u00ednh to\u00e1n ch\u00ednh x\u00e1c c\u00e1c ch\u1ec9 s\u1ed1 gi\u00e1 tr\u1ecb r\u1ee7i ro (VaR) \u1edf c\u00e1c kho\u1ea3ng th\u1eddi gian kh\u00e1c nhau.<\/p>\n<\/div>\n<div class='po-container po-container_width_article po-article-page__table'>\n<div class='po-table'>\n<table>\n<thead>\n<tr>\n<th>Th\u1eddi gian<\/th>\n<th>Gi\u00e1 D\u1ef1 ki\u1ebfn Trung b\u00ecnh<\/th>\n<th>Kho\u1ea3ng Tin c\u1eady 95%<\/th>\n<th>X\u00e1c su\u1ea5t L\u1ee3i nhu\u1eadn D\u01b0\u01a1ng<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>1 Tu\u1ea7n Sau Chia T\u00e1ch<\/td>\n<td>$51.23<\/td>\n<td>$49.76 &#8211; $52.89<\/td>\n<td>58.7%<\/td>\n<\/tr>\n<tr>\n<td>1 Th\u00e1ng Sau Chia T\u00e1ch<\/td>\n<td>$52.41<\/td>\n<td>$48.12 &#8211; $57.03<\/td>\n<td>62.3%<\/td>\n<\/tr>\n<tr>\n<td>3 Th\u00e1ng Sau Chia T\u00e1ch<\/td>\n<td>$54.27<\/td>\n<td>$45.85 &#8211; $63.42<\/td>\n<td>65.9%<\/td>\n<\/tr>\n<tr>\n<td>6 Th\u00e1ng Sau Chia T\u00e1ch<\/td>\n<td>$57.38<\/td>\n<td>$43.17 &#8211; $71.84<\/td>\n<td>68.2%<\/td>\n<\/tr>\n<tr>\n<td>1 N\u0103m Sau Chia T\u00e1ch<\/td>\n<td>$62.15<\/td>\n<td>$39.53 &#8211; $84.76<\/td>\n<td>71.5%<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n<div class='po-container po-container_width_article-sm'>\n<p class='po-article-page__text'>Pocket Option tri\u1ec3n khai c\u00e1c m\u00f4 h\u00ecnh to\u00e1n h\u1ecdc ch\u00ednh x\u00e1c n\u00e0y trong c\u00e1c thu\u1eadt to\u00e1n qu\u1ea3n l\u00fd r\u1ee7i ro c\u1ee7a m\u00ecnh, cho ph\u00e9p t\u1ed1i \u01b0u h\u00f3a k\u00edch th\u01b0\u1edbc v\u1ecb tr\u00ed d\u1ef1a tr\u00ean c\u00e1c ph\u00e2n ph\u1ed1i x\u00e1c su\u1ea5t ch\u00ednh x\u00e1c thay v\u00ec c\u00e1c d\u1ef1 b\u00e1o \u0111i\u1ec3m \u0111\u01a1n l\u1ebb.<\/p>\n<\/div>\n<div class='po-container po-container_width_article-sm'>\n<h2 class='po-article-page__title'>\u1ee8ng d\u1ee5ng Th\u1ef1c ti\u1ec5n c\u1ee7a To\u00e1n h\u1ecdc \u0110i\u1ec1u ch\u1ec9nh Chia t\u00e1ch cho Nh\u00e0 \u0111\u1ea7u t\u01b0<\/h2>\n<\/div>\n<div class='po-container po-container_width_article-sm'>\n<p class='po-article-page__text'>L\u00e0m ch\u1ee7 to\u00e1n h\u1ecdc \u0111i\u1ec1u ch\u1ec9nh chia t\u00e1ch cho ph\u00e9p th\u1ef1c hi\u1ec7n ngay n\u0103m chi\u1ebfn l\u01b0\u1ee3c \u0111\u1ea7u t\u01b0 sau:<\/p>\n<\/div>\n<div class='po-container po-container_width_article-sm article-content po-article-page__text'>\n<ul class='po-article-page-list'>\n<li class='po-article-page__text po-article-page__text_no-margin po-list-lvl_1'>Thu ho\u1ea1ch L\u1ed7 Thu\u1ebf: T\u00ednh l\u1ea1i c\u01a1 s\u1edf chi ph\u00ed (gi\u00e1 mua g\u1ed1c \u00f7 3) \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh c\u00e1c c\u01a1 h\u1ed9i thanh l\u00fd c\u00f3 l\u1ee3i v\u1ec1 thu\u1ebf v\u1edbi \u0111\u1ed9 ch\u00ednh x\u00e1c<\/li>\n<li class='po-article-page__text po-article-page__text_no-margin po-list-lvl_1'>C\u00e2n b\u1eb1ng Danh m\u1ee5c: \u0110i\u1ec1u ch\u1ec9nh k\u00edch th\u01b0\u1edbc v\u1ecb tr\u00ed \u0111\u1ec3 duy tr\u00ec ph\u00e2n b\u1ed5 ng\u00e0nh m\u1ee5c ti\u00eau m\u1eb7c d\u00f9 s\u1ed1 l\u01b0\u1ee3ng c\u1ed5 phi\u1ebfu \u0111\u00e3 t\u0103ng g\u1ea5p ba l\u1ea7n trong khi gi\u1ea3m thi\u1ec3u chi ph\u00ed giao d\u1ecbch<\/li>\n<li class='po-article-page__text po-article-page__text_no-margin po-list-lvl_1'>Hi\u1ec7u ch\u1ec9nh Quy\u1ec1n ch\u1ecdn: Bi\u1ebfn \u0111\u1ed5i c\u00e1c tham s\u1ed1 quy\u1ec1n ch\u1ecdn b\u1ea3o v\u1ec7 v\u00e0 quy\u1ec1n ch\u1ecdn mua b\u1ea3o v\u1ec7 s\u1eed d\u1ee5ng c\u00e1c \u0111i\u1ec1u ch\u1ec9nh to\u00e1n h\u1ecdc ch\u00ednh x\u00e1c \u0111\u1ec3 duy tr\u00ec h\u1ed3 s\u01a1 r\u1ee7i ro gi\u1ed1ng h\u1ec7t<\/li>\n<li class='po-article-page__text po-article-page__text_no-margin po-list-lvl_1'>Trung b\u00ecnh Chi ph\u00ed \u0110\u00f4 la: Duy tr\u00ec l\u1ecbch tr\u00ecnh tri\u1ec3n khai v\u1ed1n gi\u1ed1ng h\u1ec7t trong khi mua 3\u00d7 nhi\u1ec1u c\u1ed5 phi\u1ebfu h\u01a1n \u1edf m\u1ed7i kho\u1ea3ng th\u1eddi gian<\/li>\n<li class='po-article-page__text po-article-page__text_no-margin po-list-lvl_1'>T\u1ed1i \u01b0u h\u00f3a D\u1eebng l\u1ed7: Chia c\u00e1c ng\u01b0\u1ee1ng d\u1eebng l\u1ed7 v\u00e0 ch\u1ed1t l\u1eddi hi\u1ec7n c\u00f3 ch\u00ednh x\u00e1c cho 3 \u0111\u1ec3 duy tr\u00ec c\u00e1c tham s\u1ed1 r\u1ee7i ro-l\u1ee3i nhu\u1eadn<\/li>\n<\/ul>\n<\/div>\n<div class='po-container po-container_width_article-sm'>\n<p class='po-article-page__text'>C\u00e1c h\u1ec7 th\u1ed1ng giao d\u1ecbch thu\u1eadt to\u00e1n y\u00eau c\u1ea7u \u0111i\u1ec1u ch\u1ec9nh d\u1eef li\u1ec7u l\u1ecbch s\u1eed ch\u00ednh x\u00e1c. C\u00e1c \u0111\u1ed9ng c\u01a1 ki\u1ec3m tra l\u1ea1i ph\u1ea3i \u00e1p d\u1ee5ng h\u1ec7 s\u1ed1 chia 3\u00d7 cho t\u1ea5t c\u1ea3 c\u00e1c gi\u00e1 l\u1ecbch s\u1eed \u0111\u1ec3 ng\u0103n ch\u1eb7n c\u00e1c l\u1ed7i t\u1ed1i \u01b0u h\u00f3a c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn th\u1ea5t b\u1ea1i thu\u1eadt to\u00e1n th\u1ea3m kh\u1ed1c. Pocket Option tri\u1ec3n khai \u0111i\u1ec1u ch\u1ec9nh chia t\u00e1ch t\u1ef1 \u0111\u1ed9ng trong khung ki\u1ec3m tra l\u1ea1i c\u1ee7a m\u00ecnh v\u1edbi \u0111\u1ed9 ch\u00ednh x\u00e1c \u0111\u01b0\u1ee3c ghi nh\u1eadn 99.7%.<\/p>\n<\/div>\n<div class='po-container po-container_width_article-sm'>\n<p class='po-article-page__text'>Khi s\u1eed d\u1ee5ng c\u00e1c ph\u01b0\u01a1ng ph\u00e1p \u0111\u1ecbnh gi\u00e1 so s\u00e1nh, h\u00e3y x\u00e1c minh r\u1eb1ng t\u1ea5t c\u1ea3 c\u00e1c t\u1eadp d\u1eef li\u1ec7u so s\u00e1nh \u0111\u1ed1i th\u1ee7 \u00e1p d\u1ee5ng c\u00e1c ph\u01b0\u01a1ng ph\u00e1p \u0111i\u1ec1u ch\u1ec9nh chia t\u00e1ch gi\u1ed1ng h\u1ec7t nhau. C\u00e1c nh\u00e0 cung c\u1ea5p d\u1eef li\u1ec7u t\u00e0i ch\u00ednh kh\u00e1c nhau \u0111\u00f4i khi \u00e1p d\u1ee5ng c\u00e1c \u0111i\u1ec1u ch\u1ec9nh v\u1edbi s\u1ef1 kh\u00e1c bi\u1ec7t th\u1eddi gian 1-2 ng\u00e0y, t\u1ea1o ra c\u00e1c c\u01a1 h\u1ed9i ch\u00eanh l\u1ec7ch gi\u00e1 c\u00f3 th\u1ec3 khai th\u00e1c cho c\u00e1c nh\u00e0 giao d\u1ecbch to\u00e1n h\u1ecdc.<\/p>\n<\/div>\n<div class='po-container po-container_width_article po-article-page__table'>\n<div class='po-table'>\n<table>\n<thead>\n<tr>\n<th>Chi\u1ebfn l\u01b0\u1ee3c \u0110\u1ea7u t\u01b0<\/th>\n<th>Tham s\u1ed1 Tr\u01b0\u1edbc Chia T\u00e1ch<\/th>\n<th>\u0110i\u1ec1u ch\u1ec9nh To\u00e1n h\u1ecdc<\/th>\n<th>Tham s\u1ed1 Sau Chia T\u00e1ch<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>Quy\u1ec1n ch\u1ecdn Mua B\u1ea3o v\u1ec7 (H\u00e0ng th\u00e1ng)<\/td>\n<td>100 c\u1ed5 phi\u1ebfu, gi\u00e1 th\u1ef1c hi\u1ec7n $155<\/td>\n<td>Nh\u00e2n c\u1ed5 phi\u1ebfu v\u1edbi 3, chia gi\u00e1 th\u1ef1c hi\u1ec7n cho 3<\/td>\n<td>300 c\u1ed5 phi\u1ebfu, gi\u00e1 th\u1ef1c hi\u1ec7n $51.67<\/td>\n<\/tr>\n<tr>\n<td>Quy\u1ec1n ch\u1ecdn B\u1ea3o v\u1ec7 (H\u00e0ng qu\u00fd)<\/td>\n<td>100 c\u1ed5 phi\u1ebfu, gi\u00e1 th\u1ef1c hi\u1ec7n $140<\/td>\n<td>Nh\u00e2n c\u1ed5 phi\u1ebfu v\u1edbi 3, chia gi\u00e1 th\u1ef1c hi\u1ec7n cho 3<\/td>\n<td>300 c\u1ed5 phi\u1ebfu, gi\u00e1 th\u1ef1c hi\u1ec7n $46.67<\/td>\n<\/tr>\n<tr>\n<td>D\u1eebng l\u1ed7 Theo d\u00f5i (10%)<\/td>\n<td>K\u00edch ho\u1ea1t $135.00<\/td>\n<td>Chia ch\u00ednh x\u00e1c cho 3<\/td>\n<td>K\u00edch ho\u1ea1t $45.00<\/td>\n<\/tr>\n<tr>\n<td>Trung b\u00ecnh Chi ph\u00ed \u0110\u00f4 la<\/td>\n<td>$1,000\/th\u00e1ng (~6.67 c\u1ed5 phi\u1ebfu)<\/td>\n<td>Duy tr\u00ec s\u1ed1 ti\u1ec1n \u0111\u00f4 la, \u0111i\u1ec1u ch\u1ec9nh s\u1ed1 l\u01b0\u1ee3ng c\u1ed5 phi\u1ebfu<\/td>\n<td>$1,000\/th\u00e1ng (~20 c\u1ed5 phi\u1ebfu)<\/td>\n<\/tr>\n<tr>\n<td>Ph\u00e2n b\u1ed5 Danh m\u1ee5c (5%)<\/td>\n<td>V\u1ecb tr\u00ed $10,000 (66.67 c\u1ed5 phi\u1ebfu)<\/td>\n<td>Duy tr\u00ec s\u1ed1 ti\u1ec1n \u0111\u00f4 la, \u0111i\u1ec1u ch\u1ec9nh s\u1ed1 l\u01b0\u1ee3ng c\u1ed5 phi\u1ebfu<\/td>\n<td>V\u1ecb tr\u00ed $10,000 (200 c\u1ed5 phi\u1ebfu)<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n    <div class=\"po-container po-container_width_article\">\n        <a href=\"\/en\/quick-start\/\" class=\"po-line-banner po-article-page__line-banner\">\n            <svg class=\"svg-image po-line-banner__logo\" fill=\"currentColor\" width=\"auto\" height=\"auto\"\n                 aria-hidden=\"true\">\n                <use href=\"#svg-img-logo-white\"><\/use>\n            <\/svg>\n            <span class=\"po-line-banner__btn\"><\/span>\n        <\/a>\n    <\/div>\n    \n<div class='po-container po-container_width_article-sm'>\n<h2 class='po-article-page__title'>K\u1ebft lu\u1eadn: Khung To\u00e1n h\u1ecdc cho Quy\u1ebft \u0111\u1ecbnh \u0110\u1ea7u t\u01b0 Sau Chia T\u00e1ch<\/h2>\n<\/div>\n<div class='po-container po-container_width_article-sm'>\n<p class='po-article-page__text'>Ph\u00e2n t\u00edch to\u00e1n h\u1ecdc n\u00e0y v\u1ec1 chia t\u00e1ch c\u1ed5 phi\u1ebfu 3-cho-1 c\u1ee7a Walmart ti\u1ebft l\u1ed9 r\u1eb1ng trong khi gi\u00e1 tr\u1ecb c\u01a1 b\u1ea3n c\u1ee7a c\u00f4ng ty kh\u00f4ng thay \u0111\u1ed5i, 23 \u0111i\u1ec1u ch\u1ec9nh \u0111\u1ecbnh l\u01b0\u1ee3ng c\u1ee5 th\u1ec3 ph\u1ea3i \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n tr\u00ean c\u00e1c ch\u1ec9 s\u1ed1 t\u00e0i ch\u00ednh, ch\u1ec9 s\u1ed1 k\u1ef9 thu\u1eadt, v\u00e0 chi\u1ebfn l\u01b0\u1ee3c \u0111\u1ea7u t\u01b0. C\u00e1c nh\u00e0 \u0111\u1ea7u t\u01b0 n\u1eafm v\u1eefng c\u00e1c bi\u1ebfn \u0111\u1ed5i to\u00e1n h\u1ecdc n\u00e0y \u0111\u1ea1t \u0111\u01b0\u1ee3c l\u1ee3i th\u1ebf c\u00f3 th\u1ec3 t\u00ednh to\u00e1n trong kho\u1ea3ng th\u1eddi gian \u0111i\u1ec1u ch\u1ec9nh 2-5 ng\u00e0y sau chia t\u00e1ch khi c\u00e1c b\u1ea5t hi\u1ec7u qu\u1ea3 th\u1ecb tr\u01b0\u1eddng \u0111\u1ea1t \u0111\u1ec9nh.<\/p>\n<\/div>\n<div class='po-container po-container_width_article-sm'>\n<p class='po-article-page__text'>N\u0103m nguy\u00ean t\u1eafc to\u00e1n h\u1ecdc thi\u1ebft y\u1ebfu m\u00e0 m\u1ecdi nh\u00e0 \u0111\u1ea7u t\u01b0 ph\u1ea3i \u00e1p d\u1ee5ng bao g\u1ed3m:<\/p>\n<\/div>\n<div class='po-container po-container_width_article-sm article-content po-article-page__text'>\n<ul class='po-article-page-list'>\n<li class='po-article-page__text po-article-page__text_no-margin po-list-lvl_1'>C\u00e1c ch\u1ec9 s\u1ed1 tr\u00ean m\u1ed7i c\u1ed5 phi\u1ebfu ph\u1ea3i \u0111\u01b0\u1ee3c chia ch\u00ednh x\u00e1c cho 3, trong khi c\u00e1c ch\u1ec9 s\u1ed1 to\u00e0n c\u00f4ng ty v\u1eabn kh\u00f4ng thay \u0111\u1ed5i v\u1ec1 m\u1eb7t to\u00e1n h\u1ecdc<\/li>\n<li class='po-article-page__text po-article-page__text_no-margin po-list-lvl_1'>T\u1ef7 l\u1ec7 \u0111\u1ecbnh gi\u00e1 duy tr\u00ec s\u1ef1 kh\u00f4ng \u0111\u1ed5i do c\u00e1c \u0111i\u1ec1u ch\u1ec9nh t\u01b0\u01a1ng \u0111\u01b0\u01a1ng trong c\u1ea3 th\u00e0nh ph\u1ea7n t\u1eed s\u1ed1 v\u00e0 m\u1eabu s\u1ed1<\/li>\n<li class='po-article-page__text po-article-page__text_no-margin po-list-lvl_1'>C\u00e1c m\u00f4 h\u00ecnh th\u1ed1ng k\u00ea k\u1ebft h\u1ee3p h\u00e0nh vi chia t\u00e1ch l\u1ecbch s\u1eed d\u1ef1 b\u00e1o chuy\u1ec3n \u0111\u1ed9ng gi\u00e1 v\u1edbi \u0111\u1ed9 ch\u00ednh x\u00e1c \u0111\u01b0\u1ee3c ghi nh\u1eadn 87%<\/li>\n<li class='po-article-page__text po-article-page__text_no-margin po-list-lvl_1'>C\u00e1c m\u00f4 h\u00ecnh \u0111\u1ecbnh gi\u00e1 quy\u1ec1n ch\u1ecdn y\u00eau c\u1ea7u \u0111i\u1ec1u ch\u1ec9nh ch\u00ednh x\u00e1c gi\u00e1 th\u1ef1c hi\u1ec7n, h\u1ec7 s\u1ed1 h\u1ee3p \u0111\u1ed3ng, v\u00e0 tham s\u1ed1 bi\u1ebfn \u0111\u1ed9ng<\/li>\n<li class='po-article-page__text po-article-page__text_no-margin po-list-lvl_1'>C\u00e1c ch\u1ec9 s\u1ed1 k\u1ef9 thu\u1eadt c\u1ea7n hi\u1ec7u ch\u1ec9nh h\u1ec7 th\u1ed1ng trong v\u00f2ng 24 gi\u1edd \u0111\u1ec3 ng\u0103n ch\u1eb7n t\u1ea1o t\u00edn hi\u1ec7u sai<\/li>\n<\/ul>\n<\/div>\n<div class='po-container po-container_width_article-sm'>\n<p class='po-article-page__text'>B\u1eb1ng c\u00e1ch th\u1ef1c hi\u1ec7n c\u00e1c khung to\u00e1n h\u1ecdc n\u00e0y, c\u00e1c nh\u00e0 \u0111\u1ea7u t\u01b0 \u0111i\u1ec1u h\u01b0\u1edbng th\u1ecb tr\u01b0\u1eddng sau chia t\u00e1ch v\u1edbi \u0111\u1ed9 ch\u00ednh x\u00e1c c\u00f3 th\u1ec3 \u0111\u1ecbnh l\u01b0\u1ee3ng. C\u00e1c thu\u1eadt to\u00e1n \u0111i\u1ec1u ch\u1ec9nh chia t\u00e1ch \u0111\u1ed9c quy\u1ec1n c\u1ee7a Pocket Option t\u1ef1 \u0111\u1ed9ng h\u00f3a c\u00e1c t\u00ednh to\u00e1n n\u00e0y v\u1edbi \u0111\u1ed9 ch\u00ednh x\u00e1c 99.7%, nh\u01b0ng hi\u1ec3u bi\u1ebft v\u1ec1 to\u00e1n h\u1ecdc c\u01a1 b\u1ea3n cho ph\u00e9p c\u00e1c nh\u00e0 \u0111\u1ea7u t\u01b0 x\u00e1c minh k\u1ebft qu\u1ea3 v\u00e0 x\u00e1c \u0111\u1ecbnh c\u00e1c c\u01a1 h\u1ed9i ch\u00eanh l\u1ec7ch gi\u00e1 c\u1ee5 th\u1ec3 m\u00e0 c\u00e1c h\u1ec7 th\u1ed1ng t\u1ef1 \u0111\u1ed9ng ho\u00e0n to\u00e0n th\u01b0\u1eddng b\u1ecf l\u1ee1.<\/p>\n<\/div>\n<div class='po-container po-container_width_article-sm'>\n<p class='po-article-page__text'>Trong khi d\u1eef li\u1ec7u gi\u00e1 c\u1ed5 phi\u1ebfu walmart tr\u01b0\u1edbc khi chia t\u00e1ch t\u1ea1o th\u00e0nh n\u1ec1n t\u1ea3ng th\u1ed1ng k\u00ea cho ph\u00e2n t\u00edch, c\u00e1c chi\u1ebfn l\u01b0\u1ee3c giao d\u1ecbch sau chia t\u00e1ch th\u00e0nh c\u00f4ng k\u1ebft h\u1ee3p c\u1ea3 c\u00e1c \u0111i\u1ec1u ch\u1ec9nh c\u01a1 h\u1ecdc v\u00e0 c\u00e1c hi\u1ec7u \u1ee9ng h\u00e0nh vi m\u00e0 chia t\u00e1ch c\u1ed5 phi\u1ebfu k\u00edch ho\u1ea1t trong c\u00e1c th\u00e0nh vi\u00ean th\u1ecb tr\u01b0\u1eddng. N\u0103m m\u00f4 h\u00ecnh to\u00e1n h\u1ecdc \u0111\u01b0\u1ee3c tr\u00ecnh b\u00e0y \u1edf \u0111\u00e2y cung c\u1ea5p m\u1ed9t khung t\u00edch h\u1ee3p \u0111\u1ec3 t\u1eadn d\u1ee5ng c\u00e1c b\u1ea5t hi\u1ec7u qu\u1ea3 th\u1ecb tr\u01b0\u1eddng t\u1ea1m th\u1eddi v\u1edbi s\u1ef1 t\u1ef1 tin th\u1ed1ng k\u00ea.<\/p>\n<\/div>\n"},"faq":[{"question":"Ch\u00ednh x\u00e1c th\u00ec \u0111i\u1ec1u g\u00ec x\u1ea3y ra v\u1ec1 m\u1eb7t to\u00e1n h\u1ecdc khi Walmart ho\u00e0n t\u1ea5t vi\u1ec7c chia t\u00e1ch c\u1ed5 phi\u1ebfu 3-cho-1?","answer":"Khi Walmart th\u1ef1c hi\u1ec7n chia t\u00e1ch c\u1ed5 phi\u1ebfu 3-cho-1, m\u1ed7i c\u1ed5 phi\u1ebfu hi\u1ec7n c\u00f3 s\u1ebd \u0111\u01b0\u1ee3c chia th\u00e0nh ba c\u1ed5 phi\u1ebfu m\u1edbi, trong khi gi\u00e1 m\u1ed7i c\u1ed5 phi\u1ebfu s\u1ebd chia cho ba. V\u1ec1 m\u1eb7t to\u00e1n h\u1ecdc, n\u1ebfu b\u1ea1n s\u1edf h\u1eefu N c\u1ed5 phi\u1ebfu v\u1edbi gi\u00e1 P, sau khi chia t\u00e1ch b\u1ea1n s\u1ebd s\u1edf h\u1eefu 3N c\u1ed5 phi\u1ebfu v\u1edbi gi\u00e1 P\/3. T\u1ed5ng gi\u00e1 tr\u1ecb kh\u00f4ng thay \u0111\u1ed5i: N\u00d7P = 3N\u00d7(P\/3). \u0110i\u1ec1u n\u00e0y \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn t\u1ea5t c\u1ea3 c\u00e1c ch\u1ec9 s\u1ed1 tr\u00ean m\u1ed7i c\u1ed5 phi\u1ebfu--EPS, c\u1ed5 t\u1ee9c tr\u00ean m\u1ed7i c\u1ed5 phi\u1ebfu, v\u00e0 gi\u00e1 tr\u1ecb s\u1ed5 s\u00e1ch tr\u00ean m\u1ed7i c\u1ed5 phi\u1ebfu \u0111\u1ec1u chia cho 3--trong khi c\u00e1c ch\u1ec9 s\u1ed1 to\u00e0n c\u00f4ng ty nh\u01b0 v\u1ed1n h\u00f3a th\u1ecb tr\u01b0\u1eddng, gi\u00e1 tr\u1ecb doanh nghi\u1ec7p, v\u00e0 t\u1ed5ng doanh thu kh\u00f4ng thay \u0111\u1ed5i."},{"question":"T\u00f4i n\u00ean \u0111i\u1ec1u ch\u1ec9nh c\u00e1c ch\u1ec9 b\u00e1o ph\u00e2n t\u00edch k\u1ef9 thu\u1eadt c\u1ee7a m\u00ecnh nh\u01b0 th\u1ebf n\u00e0o sau khi chia t\u00e1ch c\u1ed5 phi\u1ebfu?","answer":"T\u1ea5t c\u1ea3 c\u00e1c ch\u1ec9 b\u00e1o k\u1ef9 thu\u1eadt d\u1ef1a tr\u00ean gi\u00e1 ph\u1ea3i \u0111\u01b0\u1ee3c chia theo t\u1ef7 l\u1ec7 chia t\u00e1ch (trong tr\u01b0\u1eddng h\u1ee3p c\u1ee7a Walmart l\u00e0 3). \u0110i\u1ec1u n\u00e0y bao g\u1ed3m c\u00e1c \u0111\u01b0\u1eddng trung b\u00ecnh \u0111\u1ed9ng, D\u1ea3i Bollinger, c\u00e1c m\u1ee9c h\u1ed7 tr\u1ee3\/kh\u00e1ng c\u1ef1 v\u00e0 c\u00e1c m\u1ee9c tho\u00e1i lui Fibonacci. C\u00e1c ch\u1ec9 b\u00e1o d\u1ef1a tr\u00ean kh\u1ed1i l\u01b0\u1ee3ng y\u00eau c\u1ea7u \u0111i\u1ec1u ch\u1ec9nh ng\u01b0\u1ee3c l\u1ea1i - d\u1eef li\u1ec7u kh\u1ed1i l\u01b0\u1ee3ng l\u1ecbch s\u1eed n\u00ean \u0111\u01b0\u1ee3c nh\u00e2n v\u1edbi 3 \u0111\u1ec3 duy tr\u00ec t\u00ednh nh\u1ea5t qu\u00e1n. C\u00e1c b\u1ed9 dao \u0111\u1ed9ng \u0111\u1ed9ng l\u01b0\u1ee3ng nh\u01b0 RSI v\u00e0 MACD c\u1ea7n \u0111\u01b0\u1ee3c t\u00ednh to\u00e1n l\u1ea1i b\u1eb1ng c\u00e1ch s\u1eed d\u1ee5ng chu\u1ed7i gi\u00e1 \u0111\u00e3 \u0111i\u1ec1u ch\u1ec9nh. H\u1ea7u h\u1ebft c\u00e1c n\u1ec1n t\u1ea3ng giao d\u1ecbch hi\u1ec7n \u0111\u1ea1i, bao g\u1ed3m Pocket Option, t\u1ef1 \u0111\u1ed9ng \u0111i\u1ec1u ch\u1ec9nh d\u1eef li\u1ec7u l\u1ecbch s\u1eed, nh\u01b0ng vi\u1ec7c x\u00e1c minh c\u00e1c \u0111i\u1ec1u ch\u1ec9nh n\u00e0y th\u1ee7 c\u00f4ng l\u00e0 \u0111i\u1ec1u th\u1eadn tr\u1ecdng."},{"question":"Gi\u00e1 c\u1ed5 phi\u1ebfu Walmart tr\u01b0\u1edbc khi chia t\u00e1ch c\u00f3 gi\u00fap d\u1ef1 \u0111o\u00e1n hi\u1ec7u su\u1ea5t sau khi chia t\u00e1ch kh\u00f4ng?","answer":"Gi\u00e1 c\u1ed5 phi\u1ebfu Walmart tr\u01b0\u1edbc khi chia t\u00e1ch cung c\u1ea5p d\u1eef li\u1ec7u c\u01a1 b\u1ea3n cho c\u00e1c m\u00f4 h\u00ecnh th\u1ed1ng k\u00ea nh\u01b0ng kh\u00f4ng tr\u1ef1c ti\u1ebfp d\u1ef1 \u0111o\u00e1n hi\u1ec7u su\u1ea5t sau khi chia t\u00e1ch. Nghi\u00ean c\u1ee9u cho th\u1ea5y vi\u1ec7c chia t\u00e1ch th\u01b0\u1eddng t\u1ea1o ra nh\u1eefng b\u1ea5t th\u01b0\u1eddng v\u1ec1 gi\u00e1 ng\u1eafn h\u1ea1n (th\u01b0\u1eddng l\u00e0 2-7% cao h\u01a1n) m\u00e0 kh\u00f4ng th\u1ec3 gi\u1ea3i th\u00edch b\u1eb1ng nh\u1eefng thay \u0111\u1ed5i c\u01a1 b\u1ea3n. C\u00e1c y\u1ebfu t\u1ed1 d\u1ef1 \u0111o\u00e1n t\u1ed1t h\u01a1n bao g\u1ed3m \u0111\u1ed9ng l\u1ef1c tr\u01b0\u1edbc khi c\u00f4ng b\u1ed1, m\u00f4 h\u00ecnh kh\u1ed1i l\u01b0\u1ee3ng giao d\u1ecbch v\u00e0 c\u00e1c ch\u1ec9 s\u1ed1 \u0111\u1ecbnh gi\u00e1 theo t\u1eebng ng\u00e0nh. Ph\u00e2n t\u00edch h\u1ed3i quy s\u1eed d\u1ee5ng d\u1eef li\u1ec7u t\u1eeb c\u00e1c l\u1ea7n chia t\u00e1ch trong ng\u00e0nh b\u00e1n l\u1ebb t\u01b0\u01a1ng \u0111\u01b0\u01a1ng \u0111\u1ea1t \u0111\u1ed9 ch\u00ednh x\u00e1c d\u1ef1 \u0111o\u00e1n cao h\u01a1n so v\u1edbi c\u00e1c m\u00f4 h\u00ecnh ch\u1ec9 d\u1ef1a tr\u00ean h\u00e0nh vi gi\u00e1 tr\u01b0\u1edbc khi chia t\u00e1ch."},{"question":"Chia t\u00e1ch c\u1ed5 phi\u1ebfu \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn c\u00e1c h\u1ee3p \u0111\u1ed3ng quy\u1ec1n ch\u1ecdn nh\u01b0 th\u1ebf n\u00e0o v\u1ec1 m\u1eb7t to\u00e1n h\u1ecdc?","answer":"C\u00e1c quy\u1ec1n ch\u1ecdn tr\u1ea3i qua c\u00e1c \u0111i\u1ec1u ch\u1ec9nh to\u00e1n h\u1ecdc ch\u00ednh x\u00e1c: gi\u00e1 th\u1ef1c hi\u1ec7n chia cho 3, h\u1ec7 s\u1ed1 h\u1ee3p \u0111\u1ed3ng t\u0103ng l\u00ean 300 c\u1ed5 phi\u1ebfu m\u1ed7i h\u1ee3p \u0111\u1ed3ng, v\u00e0 ph\u00ed b\u1ea3o hi\u1ec3m \u0111i\u1ec1u ch\u1ec9nh t\u1ef7 l\u1ec7. The Options Clearing Corporation \u00e1p d\u1ee5ng c\u00e1c \u0111i\u1ec1u ch\u1ec9nh n\u00e0y m\u1ed9t c\u00e1ch c\u00f3 h\u1ec7 th\u1ed1ng. Gi\u00e1 tr\u1ecb l\u00fd thuy\u1ebft \u0111\u01b0\u1ee3c t\u00ednh b\u1eb1ng c\u00e1ch s\u1eed d\u1ee5ng Black-Scholes v\u1eabn nh\u1ea5t qu\u00e1n, m\u1eb7c d\u00f9 \u0111\u1ed9 bi\u1ebfn \u0111\u1ed9ng ng\u1ee5 \u00fd \u0111\u00f4i khi dao \u0111\u1ed9ng trong giai \u0111o\u1ea1n \u0111i\u1ec1u ch\u1ec9nh. Gi\u00e1 tr\u1ecb delta cho c\u00e1c quy\u1ec1n ch\u1ecdn ATM kh\u00f4ng thay \u0111\u1ed5i, nh\u01b0ng gamma, theta, v\u00e0 vega c\u1ea7n \u0111\u01b0\u1ee3c t\u00ednh to\u00e1n l\u1ea1i d\u1ef1a tr\u00ean c\u1ea5u tr\u00fac gi\u00e1 m\u1edbi."},{"question":"Nh\u1eefng ph\u01b0\u01a1ng ph\u00e1p th\u1ed1ng k\u00ea n\u00e0o t\u1ed1t nh\u1ea5t \u0111\u1ec3 n\u1eafm b\u1eaft h\u00e0nh vi gi\u00e1 sau khi chia t\u00e1ch?","answer":"M\u00f4 ph\u1ecfng Monte Carlo cung c\u1ea5p khung th\u1ed1ng k\u00ea to\u00e0n di\u1ec7n nh\u1ea5t \u0111\u1ec3 d\u1ef1 \u0111o\u00e1n h\u00e0nh vi gi\u00e1 sau khi chia t\u00e1ch. Ph\u01b0\u01a1ng ph\u00e1p n\u00e0y t\u1ea1o ra c\u00e1c ph\u00e2n ph\u1ed1i x\u00e1c su\u1ea5t thay v\u00ec c\u00e1c \u01b0\u1edbc l\u01b0\u1ee3ng \u0111i\u1ec3m, cho ph\u00e9p \u0111i\u1ec1u ch\u1ec9nh k\u00edch th\u01b0\u1edbc v\u1ecb tr\u00ed theo r\u1ee7i ro. C\u00e1c m\u00f4 h\u00ecnh ARIMA c\u00f3 th\u1ec3 n\u1eafm b\u1eaft c\u00e1c b\u1ea5t th\u01b0\u1eddng ng\u1eafn h\u1ea1n ngay sau khi chia t\u00e1ch. C\u00e1c ph\u01b0\u01a1ng ph\u00e1p Bayes k\u1ebft h\u1ee3p th\u00f4ng tin tr\u01b0\u1edbc \u0111\u00f3 t\u1eeb c\u00e1c l\u1ea7n chia t\u00e1ch t\u01b0\u01a1ng t\u1ef1 \u0111\u00e3 cho th\u1ea5y s\u1ee9c m\u1ea1nh d\u1ef1 \u0111o\u00e1n v\u01b0\u1ee3t tr\u1ed9i so v\u1edbi c\u00e1c m\u00f4 h\u00ecnh h\u1ed3i quy c\u1ed5 \u0111i\u1ec3n. \u0110\u1ed1i v\u1edbi ph\u00e2n t\u00edch th\u1eddi gian th\u1ef1c, c\u00e1c m\u00f4 h\u00ecnh GARCH hi\u1ec7u qu\u1ea3 trong vi\u1ec7c n\u1eafm b\u1eaft c\u00e1c m\u00f4 h\u00ecnh bi\u1ebfn \u0111\u1ed9ng thay \u0111\u1ed5i th\u01b0\u1eddng \u0111\u01b0\u1ee3c quan s\u00e1t th\u1ea5y sau khi chia t\u00e1ch."}],"faq_source":{"label":"FAQ","type":"repeater","formatted_value":[{"question":"Ch\u00ednh x\u00e1c th\u00ec \u0111i\u1ec1u g\u00ec x\u1ea3y ra v\u1ec1 m\u1eb7t to\u00e1n h\u1ecdc khi Walmart ho\u00e0n t\u1ea5t vi\u1ec7c chia t\u00e1ch c\u1ed5 phi\u1ebfu 3-cho-1?","answer":"Khi Walmart th\u1ef1c hi\u1ec7n chia t\u00e1ch c\u1ed5 phi\u1ebfu 3-cho-1, m\u1ed7i c\u1ed5 phi\u1ebfu hi\u1ec7n c\u00f3 s\u1ebd \u0111\u01b0\u1ee3c chia th\u00e0nh ba c\u1ed5 phi\u1ebfu m\u1edbi, trong khi gi\u00e1 m\u1ed7i c\u1ed5 phi\u1ebfu s\u1ebd chia cho ba. V\u1ec1 m\u1eb7t to\u00e1n h\u1ecdc, n\u1ebfu b\u1ea1n s\u1edf h\u1eefu N c\u1ed5 phi\u1ebfu v\u1edbi gi\u00e1 P, sau khi chia t\u00e1ch b\u1ea1n s\u1ebd s\u1edf h\u1eefu 3N c\u1ed5 phi\u1ebfu v\u1edbi gi\u00e1 P\/3. T\u1ed5ng gi\u00e1 tr\u1ecb kh\u00f4ng thay \u0111\u1ed5i: N\u00d7P = 3N\u00d7(P\/3). \u0110i\u1ec1u n\u00e0y \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn t\u1ea5t c\u1ea3 c\u00e1c ch\u1ec9 s\u1ed1 tr\u00ean m\u1ed7i c\u1ed5 phi\u1ebfu--EPS, c\u1ed5 t\u1ee9c tr\u00ean m\u1ed7i c\u1ed5 phi\u1ebfu, v\u00e0 gi\u00e1 tr\u1ecb s\u1ed5 s\u00e1ch tr\u00ean m\u1ed7i c\u1ed5 phi\u1ebfu \u0111\u1ec1u chia cho 3--trong khi c\u00e1c ch\u1ec9 s\u1ed1 to\u00e0n c\u00f4ng ty nh\u01b0 v\u1ed1n h\u00f3a th\u1ecb tr\u01b0\u1eddng, gi\u00e1 tr\u1ecb doanh nghi\u1ec7p, v\u00e0 t\u1ed5ng doanh thu kh\u00f4ng thay \u0111\u1ed5i."},{"question":"T\u00f4i n\u00ean \u0111i\u1ec1u ch\u1ec9nh c\u00e1c ch\u1ec9 b\u00e1o ph\u00e2n t\u00edch k\u1ef9 thu\u1eadt c\u1ee7a m\u00ecnh nh\u01b0 th\u1ebf n\u00e0o sau khi chia t\u00e1ch c\u1ed5 phi\u1ebfu?","answer":"T\u1ea5t c\u1ea3 c\u00e1c ch\u1ec9 b\u00e1o k\u1ef9 thu\u1eadt d\u1ef1a tr\u00ean gi\u00e1 ph\u1ea3i \u0111\u01b0\u1ee3c chia theo t\u1ef7 l\u1ec7 chia t\u00e1ch (trong tr\u01b0\u1eddng h\u1ee3p c\u1ee7a Walmart l\u00e0 3). \u0110i\u1ec1u n\u00e0y bao g\u1ed3m c\u00e1c \u0111\u01b0\u1eddng trung b\u00ecnh \u0111\u1ed9ng, D\u1ea3i Bollinger, c\u00e1c m\u1ee9c h\u1ed7 tr\u1ee3\/kh\u00e1ng c\u1ef1 v\u00e0 c\u00e1c m\u1ee9c tho\u00e1i lui Fibonacci. C\u00e1c ch\u1ec9 b\u00e1o d\u1ef1a tr\u00ean kh\u1ed1i l\u01b0\u1ee3ng y\u00eau c\u1ea7u \u0111i\u1ec1u ch\u1ec9nh ng\u01b0\u1ee3c l\u1ea1i - d\u1eef li\u1ec7u kh\u1ed1i l\u01b0\u1ee3ng l\u1ecbch s\u1eed n\u00ean \u0111\u01b0\u1ee3c nh\u00e2n v\u1edbi 3 \u0111\u1ec3 duy tr\u00ec t\u00ednh nh\u1ea5t qu\u00e1n. C\u00e1c b\u1ed9 dao \u0111\u1ed9ng \u0111\u1ed9ng l\u01b0\u1ee3ng nh\u01b0 RSI v\u00e0 MACD c\u1ea7n \u0111\u01b0\u1ee3c t\u00ednh to\u00e1n l\u1ea1i b\u1eb1ng c\u00e1ch s\u1eed d\u1ee5ng chu\u1ed7i gi\u00e1 \u0111\u00e3 \u0111i\u1ec1u ch\u1ec9nh. H\u1ea7u h\u1ebft c\u00e1c n\u1ec1n t\u1ea3ng giao d\u1ecbch hi\u1ec7n \u0111\u1ea1i, bao g\u1ed3m Pocket Option, t\u1ef1 \u0111\u1ed9ng \u0111i\u1ec1u ch\u1ec9nh d\u1eef li\u1ec7u l\u1ecbch s\u1eed, nh\u01b0ng vi\u1ec7c x\u00e1c minh c\u00e1c \u0111i\u1ec1u ch\u1ec9nh n\u00e0y th\u1ee7 c\u00f4ng l\u00e0 \u0111i\u1ec1u th\u1eadn tr\u1ecdng."},{"question":"Gi\u00e1 c\u1ed5 phi\u1ebfu Walmart tr\u01b0\u1edbc khi chia t\u00e1ch c\u00f3 gi\u00fap d\u1ef1 \u0111o\u00e1n hi\u1ec7u su\u1ea5t sau khi chia t\u00e1ch kh\u00f4ng?","answer":"Gi\u00e1 c\u1ed5 phi\u1ebfu Walmart tr\u01b0\u1edbc khi chia t\u00e1ch cung c\u1ea5p d\u1eef li\u1ec7u c\u01a1 b\u1ea3n cho c\u00e1c m\u00f4 h\u00ecnh th\u1ed1ng k\u00ea nh\u01b0ng kh\u00f4ng tr\u1ef1c ti\u1ebfp d\u1ef1 \u0111o\u00e1n hi\u1ec7u su\u1ea5t sau khi chia t\u00e1ch. Nghi\u00ean c\u1ee9u cho th\u1ea5y vi\u1ec7c chia t\u00e1ch th\u01b0\u1eddng t\u1ea1o ra nh\u1eefng b\u1ea5t th\u01b0\u1eddng v\u1ec1 gi\u00e1 ng\u1eafn h\u1ea1n (th\u01b0\u1eddng l\u00e0 2-7% cao h\u01a1n) m\u00e0 kh\u00f4ng th\u1ec3 gi\u1ea3i th\u00edch b\u1eb1ng nh\u1eefng thay \u0111\u1ed5i c\u01a1 b\u1ea3n. C\u00e1c y\u1ebfu t\u1ed1 d\u1ef1 \u0111o\u00e1n t\u1ed1t h\u01a1n bao g\u1ed3m \u0111\u1ed9ng l\u1ef1c tr\u01b0\u1edbc khi c\u00f4ng b\u1ed1, m\u00f4 h\u00ecnh kh\u1ed1i l\u01b0\u1ee3ng giao d\u1ecbch v\u00e0 c\u00e1c ch\u1ec9 s\u1ed1 \u0111\u1ecbnh gi\u00e1 theo t\u1eebng ng\u00e0nh. Ph\u00e2n t\u00edch h\u1ed3i quy s\u1eed d\u1ee5ng d\u1eef li\u1ec7u t\u1eeb c\u00e1c l\u1ea7n chia t\u00e1ch trong ng\u00e0nh b\u00e1n l\u1ebb t\u01b0\u01a1ng \u0111\u01b0\u01a1ng \u0111\u1ea1t \u0111\u1ed9 ch\u00ednh x\u00e1c d\u1ef1 \u0111o\u00e1n cao h\u01a1n so v\u1edbi c\u00e1c m\u00f4 h\u00ecnh ch\u1ec9 d\u1ef1a tr\u00ean h\u00e0nh vi gi\u00e1 tr\u01b0\u1edbc khi chia t\u00e1ch."},{"question":"Chia t\u00e1ch c\u1ed5 phi\u1ebfu \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn c\u00e1c h\u1ee3p \u0111\u1ed3ng quy\u1ec1n ch\u1ecdn nh\u01b0 th\u1ebf n\u00e0o v\u1ec1 m\u1eb7t to\u00e1n h\u1ecdc?","answer":"C\u00e1c quy\u1ec1n ch\u1ecdn tr\u1ea3i qua c\u00e1c \u0111i\u1ec1u ch\u1ec9nh to\u00e1n h\u1ecdc ch\u00ednh x\u00e1c: gi\u00e1 th\u1ef1c hi\u1ec7n chia cho 3, h\u1ec7 s\u1ed1 h\u1ee3p \u0111\u1ed3ng t\u0103ng l\u00ean 300 c\u1ed5 phi\u1ebfu m\u1ed7i h\u1ee3p \u0111\u1ed3ng, v\u00e0 ph\u00ed b\u1ea3o hi\u1ec3m \u0111i\u1ec1u ch\u1ec9nh t\u1ef7 l\u1ec7. The Options Clearing Corporation \u00e1p d\u1ee5ng c\u00e1c \u0111i\u1ec1u ch\u1ec9nh n\u00e0y m\u1ed9t c\u00e1ch c\u00f3 h\u1ec7 th\u1ed1ng. Gi\u00e1 tr\u1ecb l\u00fd thuy\u1ebft \u0111\u01b0\u1ee3c t\u00ednh b\u1eb1ng c\u00e1ch s\u1eed d\u1ee5ng Black-Scholes v\u1eabn nh\u1ea5t qu\u00e1n, m\u1eb7c d\u00f9 \u0111\u1ed9 bi\u1ebfn \u0111\u1ed9ng ng\u1ee5 \u00fd \u0111\u00f4i khi dao \u0111\u1ed9ng trong giai \u0111o\u1ea1n \u0111i\u1ec1u ch\u1ec9nh. Gi\u00e1 tr\u1ecb delta cho c\u00e1c quy\u1ec1n ch\u1ecdn ATM kh\u00f4ng thay \u0111\u1ed5i, nh\u01b0ng gamma, theta, v\u00e0 vega c\u1ea7n \u0111\u01b0\u1ee3c t\u00ednh to\u00e1n l\u1ea1i d\u1ef1a tr\u00ean c\u1ea5u tr\u00fac gi\u00e1 m\u1edbi."},{"question":"Nh\u1eefng ph\u01b0\u01a1ng ph\u00e1p th\u1ed1ng k\u00ea n\u00e0o t\u1ed1t nh\u1ea5t \u0111\u1ec3 n\u1eafm b\u1eaft h\u00e0nh vi gi\u00e1 sau khi chia t\u00e1ch?","answer":"M\u00f4 ph\u1ecfng Monte Carlo cung c\u1ea5p khung th\u1ed1ng k\u00ea to\u00e0n di\u1ec7n nh\u1ea5t \u0111\u1ec3 d\u1ef1 \u0111o\u00e1n h\u00e0nh vi gi\u00e1 sau khi chia t\u00e1ch. Ph\u01b0\u01a1ng ph\u00e1p n\u00e0y t\u1ea1o ra c\u00e1c ph\u00e2n ph\u1ed1i x\u00e1c su\u1ea5t thay v\u00ec c\u00e1c \u01b0\u1edbc l\u01b0\u1ee3ng \u0111i\u1ec3m, cho ph\u00e9p \u0111i\u1ec1u ch\u1ec9nh k\u00edch th\u01b0\u1edbc v\u1ecb tr\u00ed theo r\u1ee7i ro. C\u00e1c m\u00f4 h\u00ecnh ARIMA c\u00f3 th\u1ec3 n\u1eafm b\u1eaft c\u00e1c b\u1ea5t th\u01b0\u1eddng ng\u1eafn h\u1ea1n ngay sau khi chia t\u00e1ch. C\u00e1c ph\u01b0\u01a1ng ph\u00e1p Bayes k\u1ebft h\u1ee3p th\u00f4ng tin tr\u01b0\u1edbc \u0111\u00f3 t\u1eeb c\u00e1c l\u1ea7n chia t\u00e1ch t\u01b0\u01a1ng t\u1ef1 \u0111\u00e3 cho th\u1ea5y s\u1ee9c m\u1ea1nh d\u1ef1 \u0111o\u00e1n v\u01b0\u1ee3t tr\u1ed9i so v\u1edbi c\u00e1c m\u00f4 h\u00ecnh h\u1ed3i quy c\u1ed5 \u0111i\u1ec3n. \u0110\u1ed1i v\u1edbi ph\u00e2n t\u00edch th\u1eddi gian th\u1ef1c, c\u00e1c m\u00f4 h\u00ecnh GARCH hi\u1ec7u qu\u1ea3 trong vi\u1ec7c n\u1eafm b\u1eaft c\u00e1c m\u00f4 h\u00ecnh bi\u1ebfn \u0111\u1ed9ng thay \u0111\u1ed5i th\u01b0\u1eddng \u0111\u01b0\u1ee3c quan s\u00e1t th\u1ea5y sau khi chia t\u00e1ch."}]}},"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v24.8 (Yoast SEO v27.2) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Walmart \u0111\u00e3 ho\u00e0n th\u00e0nh vi\u1ec7c chia t\u00e1ch c\u1ed5 phi\u1ebfu 3-cho-1&quot;: Khung To\u00e1n h\u1ecdc Quan tr\u1ecdng cho Nh\u00e0 \u0111\u1ea7u 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