{"id":1324,"date":"2025-12-08T19:00:26","date_gmt":"2025-12-08T12:00:26","guid":{"rendered":"http:\/\/3.114.29.209\/?p=1324&#038;lang=vi"},"modified":"2025-12-08T20:00:47","modified_gmt":"2025-12-08T13:00:47","slug":"bollinger-bands-va-cach-su-dung-bollinger-bands-trong-trading","status":"publish","type":"post","link":"https:\/\/bitcoinvn.io\/news\/vi\/bollinger-bands-va-cach-su-dung-bollinger-bands-trong-trading\/","title":{"rendered":"Bollinger Bands l\u00e0 g\u00ec? C\u00e1ch s\u1eed d\u1ee5ng Bollinger Bands trong trading"},"content":{"rendered":"<p><i><span style=\"font-weight: 400;\">\u0110\u01b0\u1ee3c ph\u00e1t tri\u1ec3n b\u1edfi John Bollinger v\u00e0o nh\u1eefng n\u0103m 1980, Bollinger Bands gi\u00fap c\u00e1c nh\u00e0 giao d\u1ecbch x\u00e1c \u0111\u1ecbnh c\u00e1c xu h\u01b0\u1edbng ti\u1ec1m n\u0103ng v\u00e0 d\u1ef1 \u0111o\u00e1n c\u00e1c \u0111i\u1ec3m \u0111\u1ea3o chi\u1ec1u. T\u1eeb \u0111\u00f3 ch\u1ecdn \u0111\u00fang th\u1eddi \u0111i\u1ec3m \u0111\u1ec3 \u0111\u01b0a ra quy\u1ebft \u0111\u1ecbnh \u0111\u1ea7u t\u01b0 s\u00e1ng su\u1ed1t. V\u1eady <\/span><\/i><b><i>Bollinger Bands l\u00e0 g\u00ec<\/i><\/b><i><span style=\"font-weight: 400;\">? L\u00e0m sao \u0111\u1ec3 s\u1eed d\u1ee5ng n\u00f3 trong giao d\u1ecbch \u0111\u1ec3 t\u1ed1i \u01b0u h\u00f3a chi\u1ebfn l\u01b0\u1ee3c v\u00e0 qu\u1ea3n l\u00fd r\u1ee7i ro?\u00a0<\/span><\/i><\/p>\n<figure id=\"attachment_16400\" aria-describedby=\"caption-attachment-16400\" style=\"width: 800px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-16400 size-full\" src=\"https:\/\/bitcoinvn.io\/news\/wp-content\/uploads\/2019\/09\/Bollinger-Bands-la-gi-4.jpg\" alt=\"Bollinger Bands l\u00e0 g\u00ec? Bollinger Bands mang l\u1ea1i l\u1ee3i \u00edch g\u00ec cho nh\u00e0 \u0111\u1ea7u t\u01b0?\u00a0\" width=\"800\" height=\"451\" srcset=\"https:\/\/bitcoinvn.io\/news\/wp-content\/uploads\/2019\/09\/Bollinger-Bands-la-gi-4.jpg 800w, https:\/\/bitcoinvn.io\/news\/wp-content\/uploads\/2019\/09\/Bollinger-Bands-la-gi-4-300x169.jpg 300w, https:\/\/bitcoinvn.io\/news\/wp-content\/uploads\/2019\/09\/Bollinger-Bands-la-gi-4-768x433.jpg 768w, https:\/\/bitcoinvn.io\/news\/wp-content\/uploads\/2019\/09\/Bollinger-Bands-la-gi-4-696x392.jpg 696w, https:\/\/bitcoinvn.io\/news\/wp-content\/uploads\/2019\/09\/Bollinger-Bands-la-gi-4-745x420.jpg 745w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><figcaption id=\"caption-attachment-16400\" class=\"wp-caption-text\">Bollinger Bands l\u00e0 g\u00ec? Bollinger Bands mang l\u1ea1i l\u1ee3i \u00edch g\u00ec cho nh\u00e0 \u0111\u1ea7u t\u01b0?<\/figcaption><\/figure>\n<h2><b>Bollinger Bands l\u00e0 g\u00ec?<\/b><\/h2>\n<p><span style=\"font-weight: 400;\">Bollinger Bands l\u00e0 m\u1ed9t c\u00f4ng c\u1ee5 trong ph\u00e2n t\u00edch k\u1ef9 thu\u1eadt gi\u00fap b\u1ea1n bi\u1ebft <\/span><b>gi\u00e1 \u0111ang bi\u1ebfn \u0111\u1ed9ng m\u1ea1nh hay y\u1ebfu<\/b><span style=\"font-weight: 400;\">, v\u00e0 <\/span><b>gi\u00e1 c\u00f3 \u0111ang \u1edf v\u00f9ng cao hay th\u1ea5p<\/b><span style=\"font-weight: 400;\"> so v\u1edbi m\u1ee9c b\u00ecnh th\u01b0\u1eddng.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">N\u00f3 g\u1ed3m 3 \u0111\u01b0\u1eddng:<\/span><\/p>\n<ol>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>\u0110\u01b0\u1eddng gi\u1eefa (MA)<\/b><span style=\"font-weight: 400;\"> \u2013 l\u00e0 \u0111\u01b0\u1eddng trung b\u00ecnh \u0111\u1ed9ng, v\u00ed d\u1ee5 nh\u01b0 MA20 (gi\u00e1 trung b\u00ecnh c\u1ee7a 20 phi\u00ean).<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>D\u1ea3i tr\u00ean<\/b><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>D\u1ea3i d\u01b0\u1edbi<\/b><\/li>\n<\/ol>\n<p><span style=\"font-weight: 400;\">Hai d\u1ea3i tr\u00ean &#8211; d\u01b0\u1edbi \u0111\u01b0\u1ee3c t\u00ednh b\u1eb1ng <\/span><b>\u0111\u1ed9 l\u1ec7ch chu\u1ea9n<\/b><span style=\"font-weight: 400;\"> so v\u1edbi \u0111\u01b0\u1eddng MA. N\u00f3i \u0111\u01a1n gi\u1ea3n:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Khi gi\u00e1 bi\u1ebfn \u0111\u1ed9ng m\u1ea1nh, c\u00e1c d\u1ea3i m\u1edf r\u1ed9ng.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Khi th\u1ecb tr\u01b0\u1eddng \u0111i ngang, \u00edt bi\u1ebfn \u0111\u1ed9ng, c\u00e1c d\u1ea3i thu h\u1eb9p l\u1ea1i.<\/span><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">M\u1eb7c \u0111\u1ecbnh, d\u1ea3i tr\u00ean v\u00e0 d\u1ea3i d\u01b0\u1edbi c\u00e1ch \u0111\u01b0\u1eddng trung b\u00ecnh <\/span><b>\u00b12 \u0111\u1ed9 l\u1ec7ch chu\u1ea9n<\/b><span style=\"font-weight: 400;\">, nh\u01b0ng b\u1ea1n c\u00f3 th\u1ec3 t\u00f9y ch\u1ec9nh theo \u00fd mu\u1ed1n.<\/span><\/p>\n<p><b>T\u00f3m l\u1ea1i:<\/b><b><br \/>\n<\/b><span style=\"font-weight: 400;\">Bollinger Bands gi\u00fap b\u1ea1n xem <\/span><b>gi\u00e1 \u0111ang \u201c\u0111\u1eaft hay r\u1ebb\u201d so v\u1edbi b\u00ecnh th\u01b0\u1eddng<\/b><span style=\"font-weight: 400;\">, v\u00e0 d\u1ef1 \u0111o\u00e1n th\u1ecb tr\u01b0\u1eddng <\/span><b>\u0111ang chu\u1ea9n b\u1ecb bi\u1ebfn \u0111\u1ed9ng m\u1ea1nh hay b\u00ecnh l\u1eb7ng<\/b><span style=\"font-weight: 400;\">.<\/span><\/p>\n<figure id=\"attachment_16404\" aria-describedby=\"caption-attachment-16404\" style=\"width: 800px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-16404 size-full\" src=\"https:\/\/bitcoinvn.io\/news\/wp-content\/uploads\/2019\/09\/Bollinger-Bands-la-gi-8.jpg\" alt=\"V\u00ed d\u1ee5 minh h\u1ecda \u0111\u1ec3 b\u1ea1n hi\u1ec3u nhanh kh\u00e1i ni\u1ec7m Bollinger Bands l\u00e0 g\u00ec?\" width=\"800\" height=\"450\" srcset=\"https:\/\/bitcoinvn.io\/news\/wp-content\/uploads\/2019\/09\/Bollinger-Bands-la-gi-8.jpg 800w, https:\/\/bitcoinvn.io\/news\/wp-content\/uploads\/2019\/09\/Bollinger-Bands-la-gi-8-300x169.jpg 300w, https:\/\/bitcoinvn.io\/news\/wp-content\/uploads\/2019\/09\/Bollinger-Bands-la-gi-8-768x432.jpg 768w, https:\/\/bitcoinvn.io\/news\/wp-content\/uploads\/2019\/09\/Bollinger-Bands-la-gi-8-696x392.jpg 696w, https:\/\/bitcoinvn.io\/news\/wp-content\/uploads\/2019\/09\/Bollinger-Bands-la-gi-8-747x420.jpg 747w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><figcaption id=\"caption-attachment-16404\" class=\"wp-caption-text\">V\u00ed d\u1ee5 minh h\u1ecda \u0111\u1ec3 b\u1ea1n hi\u1ec3u nhanh kh\u00e1i ni\u1ec7m Bollinger Bands l\u00e0 g\u00ec?<\/figcaption><\/figure>\n<h2><b>\u201cCha \u0111\u1ebb\u201d c\u1ee7a Bollinger Bands l\u00e0 ai?<\/b><\/h2>\n<p><span style=\"font-weight: 400;\">\u00d4ng John Bollinger (c\u00f3 ch\u1ee9ng ch\u1ec9 ph\u00e2n t\u00edch t\u00e0i ch\u00ednh chuy\u00ean nghi\u1ec7p CFA v\u00e0 ch\u1ee9ng ch\u1ec9 ph\u00e2n t\u00edch k\u1ef9 thu\u1eadt th\u1ecb tr\u01b0\u1eddng CMT) l\u00e0 m\u1ed9t nh\u00e2n v\u1eadt c\u00f3 \u1ea3nh h\u01b0\u1edfng l\u1edbn trong ph\u00e2n t\u00edch k\u1ef9 thu\u1eadt. \u00d4ng n\u1ed5i ti\u1ebfng v\u1edbi vi\u1ec7c <\/span><b>ph\u00e1t tri\u1ec3n Bollinger Bands v\u00e0o nh\u1eefng n\u0103m 1980<\/b><span style=\"font-weight: 400;\">.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">\u0110\u1ec3 t\u1ea1o ra c\u00f4ng c\u1ee5 n\u00e0y, \u00f4ng \u0111\u00e3 k\u1ebft h\u1ee3p n\u1ec1n t\u1ea3ng to\u00e1n h\u1ecdc v\u00e0 k\u1ef9 thu\u1eadt v\u1edbi ph\u00e2n t\u00edch t\u00e0i ch\u00ednh, s\u1eed d\u1ee5ng \u0111\u01b0\u1eddng trung b\u00ecnh \u0111\u1ed9ng v\u00e0 \u0111\u1ed9 l\u1ec7ch chu\u1ea9n \u0111\u1ec3 \u0111\u00e1nh gi\u00e1 bi\u1ebfn \u0111\u1ed9ng v\u00e0 xu h\u01b0\u1edbng gi\u00e1 t\u00e0i s\u1ea3n.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">C\u00f4ng c\u1ee5 n\u00e0y \u0111\u00e3 tr\u1edf th\u00e0nh t<\/span><b>r\u1ee5 c\u1ed9t trong ph\u00e2n t\u00edch k\u1ef9 thu\u1eadt<\/b><span style=\"font-weight: 400;\">. John Bollinger c\u00f2n s\u00e1ng l\u1eadp Bollinger Capital Management v\u00e0 l\u00e0 nh\u00e0 b\u00ecnh lu\u1eadn, ph\u00e2n t\u00edch th\u1ecb tr\u01b0\u1eddng n\u1ed5i b\u1eadt trong th\u1eddi k\u00ec n\u00e0y.<\/span><\/p>\n<h2><b>C\u00e1ch th\u1ee9c ho\u1ea1t \u0111\u1ed9ng c\u1ee7a Bollinger Bands l\u00e0 g\u00ec?<\/b><\/h2>\n<p><span style=\"font-weight: 400;\">Bollinger Bands g\u1ed3m 3 \u0111\u01b0\u1eddng ph\u1ee5 thu\u1ed9c v\u00e0o bi\u1ebfn \u0111\u1ed9ng gi\u00e1:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>\u0110\u01b0\u1eddng gi\u1eefa: <\/b><span style=\"font-weight: 400;\">\u0110\u00e2y l\u00e0 \u0111\u01b0\u1eddng trung b\u00ecnh \u0111\u1ed9ng (th\u01b0\u1eddng d\u00f9ng MA20 &#8211; gi\u00e1 \u0111\u00f3ng c\u1eeda c\u1ee7a 20 ng\u00e0y). N\u00f3 gi\u00fap b\u1ea1n nh\u00ecn \u0111\u01b0\u1ee3c xu h\u01b0\u1edbng trung h\u1ea1n c\u1ee7a th\u1ecb tr\u01b0\u1eddng.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>D\u1ea3i tr\u00ean v\u00e0 d\u01b0\u1edbi: <\/b><span style=\"font-weight: 400;\">Hai d\u1ea3i n\u00e0y \u0111\u01b0\u1ee3c v\u1ebd c\u00e1ch \u0111\u01b0\u1eddng gi\u1eefa 2 \u0111\u1ed9 l\u1ec7ch chu\u1ea9n. Ch\u00fang m\u1edf r\u1ed9ng khi th\u1ecb tr\u01b0\u1eddng bi\u1ebfn \u0111\u1ed9ng m\u1ea1nh &amp; thu h\u1eb9p khi th\u1ecb tr\u01b0\u1eddng \u0111i ngang.<\/span> <span style=\"font-weight: 400;\">\u0110\u1ec3 d\u00f9ng Bollinger Bands, b\u1ea1n ch\u1ec9 c\u1ea7n ch\u1ecdn s\u1ed1 ng\u00e0y cho SMA (v\u00ed d\u1ee5 20) v\u00e0 m\u1ee9c \u0111\u1ed9 l\u1ec7ch chu\u1ea9n (th\u01b0\u1eddng l\u00e0 2).<\/span><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">H\u1ea7u h\u1ebft c\u00e1c n\u1ec1n t\u1ea3ng giao d\u1ecbch ph\u1ed5 bi\u1ebfn nh\u01b0 TradingView \u0111\u1ec1u t\u00edch h\u1ee3p s\u1eb5n Bollinger Bands, gi\u00fap b\u1ea1n d\u1ec5 d\u00e0ng th\u00eam v\u00e0o bi\u1ec3u \u0111\u1ed3 v\u00e0 \u0111i\u1ec1u ch\u1ec9nh theo nhu c\u1ea7u c\u1ee7a m\u00ecnh.\u00a0<\/span><\/p>\n<h3><b>\u00dd ngh\u0129a khi ph\u00e2n t\u00edch bi\u1ec3u \u0111\u1ed3<\/b><\/h3>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Gi\u00e1 ch\u1ea1m d\u1ea3i tr\u00ean<\/b><span style=\"font-weight: 400;\"> \u2192 Th\u01b0\u1eddng cho th\u1ea5y gi\u00e1 \u0111ang \u1edf m\u1ee9c cao b\u1ea5t th\u01b0\u1eddng \u2192 <\/span><i><span style=\"font-weight: 400;\">v\u00f9ng d\u1ec5 \u201cmua qu\u00e1 m\u1ee9c\u201d<\/span><\/i><span style=\"font-weight: 400;\"> \u2192 ng\u01b0\u1eddi b\u00e1n c\u00f3 th\u1ec3 quan t\u00e2m.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Gi\u00e1 ch\u1ea1m d\u1ea3i d\u01b0\u1edbi<\/b><span style=\"font-weight: 400;\"> \u2192 Th\u01b0\u1eddng cho th\u1ea5y gi\u00e1 \u0111ang \u1edf m\u1ee9c th\u1ea5p b\u1ea5t th\u01b0\u1eddng \u2192 <\/span><i><span style=\"font-weight: 400;\">v\u00f9ng d\u1ec5 \u201cb\u00e1n qu\u00e1 m\u1ee9c\u201d<\/span><\/i><span style=\"font-weight: 400;\"> \u2192 ng\u01b0\u1eddi mua c\u00f3 th\u1ec3 quan t\u00e2m.<\/span><\/li>\n<\/ul>\n<p><b>T\u00f3m l\u1ea1i:<\/b><span style=\"font-weight: 400;\"> Bollinger Bands gi\u00fap b\u1ea1n nhanh ch\u00f3ng bi\u1ebft gi\u00e1 \u0111ang \u201ccao b\u1ea5t th\u01b0\u1eddng\u201d hay \u201cth\u1ea5p b\u1ea5t th\u01b0\u1eddng\u201d, v\u00e0 th\u1ecb tr\u01b0\u1eddng \u0111ang bi\u1ebfn \u0111\u1ed9ng m\u1ea1nh hay y\u1ebfu.<\/span><\/p>\n<figure id=\"attachment_16402\" aria-describedby=\"caption-attachment-16402\" style=\"width: 800px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-16402 size-full\" src=\"https:\/\/bitcoinvn.io\/news\/wp-content\/uploads\/2019\/09\/Bollinger-Bands-la-gi-6.jpg\" alt=\"Bollinger Bands g\u1ed3m 3 th\u00e0nh ph\u1ea7n ch\u00ednh: \u0110\u01b0\u1eddng SMA, d\u1ea3i tr\u00ean v\u00e0 d\u1ea3i d\u01b0\u1edbi\" width=\"800\" height=\"500\" srcset=\"https:\/\/bitcoinvn.io\/news\/wp-content\/uploads\/2019\/09\/Bollinger-Bands-la-gi-6.jpg 800w, https:\/\/bitcoinvn.io\/news\/wp-content\/uploads\/2019\/09\/Bollinger-Bands-la-gi-6-300x188.jpg 300w, https:\/\/bitcoinvn.io\/news\/wp-content\/uploads\/2019\/09\/Bollinger-Bands-la-gi-6-768x480.jpg 768w, https:\/\/bitcoinvn.io\/news\/wp-content\/uploads\/2019\/09\/Bollinger-Bands-la-gi-6-696x435.jpg 696w, https:\/\/bitcoinvn.io\/news\/wp-content\/uploads\/2019\/09\/Bollinger-Bands-la-gi-6-672x420.jpg 672w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><figcaption id=\"caption-attachment-16402\" class=\"wp-caption-text\">Bollinger Bands g\u1ed3m 3 th\u00e0nh ph\u1ea7n ch\u00ednh: \u0110\u01b0\u1eddng SMA, d\u1ea3i tr\u00ean v\u00e0 d\u1ea3i d\u01b0\u1edbi<\/figcaption><\/figure>\n<h2><b>C\u00e1ch giao d\u1ecbch v\u1edbi Bollinger Bands l\u00e0 g\u00ec?<\/b><\/h2>\n<p><span style=\"font-weight: 400;\">Bollinger Bands \u0111\u01b0\u1ee3c c\u00e1c nh\u00e0 giao d\u1ecbch v\u00e0 nh\u00e0 \u0111\u1ea7u t\u01b0 s\u1eed d\u1ee5ng \u0111\u1ec3 \u0111\u00e1nh gi\u00e1 m\u1ee9c \u0111\u1ed9 bi\u1ebfn \u0111\u1ed9ng c\u1ee7a th\u1ecb tr\u01b0\u1eddng v\u00e0 x\u00e1c \u0111\u1ecbnh th\u1eddi \u0111i\u1ec3m mua\/b\u00e1n l\u00fd t\u01b0\u1edfng. C\u00f4ng c\u1ee5 n\u00e0y d\u1ef1a tr\u00ean gi\u1ea3 \u0111\u1ecbnh r\u1eb1ng gi\u00e1 c\u1ea3 th\u01b0\u1eddng dao \u0111\u1ed9ng trong kho\u1ea3ng gi\u1eefa d\u1ea3i tr\u00ean v\u00e0 d\u1ea3i d\u01b0\u1edbi.<\/span><\/p>\n<h3><b>Ph\u00e2n t\u00edch xu h\u01b0\u1edbng<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">\u0110\u1ed9 d\u1ed1c c\u1ee7a \u0111\u01b0\u1eddng gi\u1eefa:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>\u0110\u01b0\u1eddng gi\u1eefa h\u01b0\u1edbng l\u00ean:<\/b><span style=\"font-weight: 400;\"> Cho th\u1ea5y <\/span><b>xu h\u01b0\u1edbng t\u0103ng.<\/b><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>\u0110\u01b0\u1eddng gi\u1eefa h\u01b0\u1edbng xu\u1ed1ng:<\/b><span style=\"font-weight: 400;\"> Cho th\u1ea5y <\/span><b>xu h\u01b0\u1edbng gi\u1ea3m.<\/b><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">\u0110\u1ed9 r\u1ed9ng c\u1ee7a Bollinger Bands:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>D\u1ea3i h\u1eb9p:<\/b><span style=\"font-weight: 400;\"> Bi\u1ebfn \u0111\u1ed9ng<\/span><b> th\u1ea5p.<\/b><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>D\u1ea3i r\u1ed9ng: <\/b><span style=\"font-weight: 400;\">Bi\u1ebfn \u0111\u1ed9ng<\/span><b> cao.<\/b><\/li>\n<\/ul>\n<h3><b>X\u00e1c \u0111\u1ecbnh t\u00e0i s\u1ea3n b\u1ecb mua\/b\u00e1n qu\u00e1 m\u1ee9c<\/b><\/h3>\n<p><b>Gi\u00e1 ch\u1ea1m ho\u1eb7c v\u01b0\u1ee3t qua d\u1ea3i tr\u00ean:<\/b><span style=\"font-weight: 400;\"> Th\u1ec3 hi\u1ec7n t\u00e0i s\u1ea3n \u0111\u01b0\u1ee3c mua qu\u00e1 m\u1ee9c, trong t\u01b0\u01a1ng lai c\u00f3 ti\u1ec1m n\u0103ng gi\u1ea3m gi\u00e1, nh\u00e0 \u0111\u1ea7u t\u01b0 c\u00f3 th\u1ec3 b\u00e1n ho\u1eb7c b\u00e1n kh\u1ed1ng.<\/span><\/p>\n<p><b>Gi\u00e1 ch\u1ea1m ho\u1eb7c th\u1ea5p h\u01a1n d\u1ea3i d\u01b0\u1edbi:<\/b><span style=\"font-weight: 400;\"> T\u00e0i s\u1ea3n \u0111ang \u0111\u01b0\u1ee3c b\u00e1n qu\u00e1 m\u1ee9c, s\u1ebd ti\u1ec1m n\u0103ng t\u0103ng gi\u00e1 trong t\u01b0\u01a1ng lai, nh\u00e0 \u0111\u1ea7u t\u01b0 c\u00f3 th\u1ec3 mua v\u00e0o t\u1ea1i th\u1eddi \u0111i\u1ec3m th\u00edch h\u1ee3p.<\/span><\/p>\n<h3><b>T\u00ecm gi\u00e1 m\u1ee5c ti\u00eau<\/b><\/h3>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Gi\u00e1 &#8220;n\u1ea3y&#8221; l\u00ean t\u1eeb d\u1ea3i d\u01b0\u1edbi: <\/b><span style=\"font-weight: 400;\">D\u1ea3i tr\u00ean l\u00e0 m\u1ee5c ti\u00eau b\u00e1n ti\u1ec1m n\u0103ng n\u1ebfu gi\u00e1 \u0111\u1ea3o chi\u1ec1u.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Gi\u00e1 ch\u1ea1m d\u1ea3i tr\u00ean: <\/b><span style=\"font-weight: 400;\">D\u1ea3i d\u01b0\u1edbi l\u00e0 m\u1ee5c ti\u00eau mua ti\u1ec1m n\u0103ng n\u1ebfu gi\u00e1 \u0111\u1ea3o chi\u1ec1u.<\/span><\/li>\n<\/ul>\n<h3><b>Chi\u1ebfn l\u01b0\u1ee3c &#8220;Bollinger Bounce&#8221;<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">Chi\u1ebfn l\u01b0\u1ee3c &#8220;Bollinger Bounce&#8221; d\u1ef1a tr\u00ean \u00fd t\u01b0\u1edfng gi\u00e1 th\u01b0\u1eddng quay tr\u1edf l\u1ea1i \u0111\u01b0\u1eddng gi\u1eefa. Nh\u00e0 giao d\u1ecbch c\u00f3 th\u1ec3 mua ho\u1eb7c b\u00e1n khi gi\u00e1 ph\u1ee5c h\u1ed3i t\u1eeb d\u1ea3i tr\u00ean ho\u1eb7c d\u01b0\u1edbi v\u1ec1 \u0111\u01b0\u1eddng gi\u1eefa, \u0111\u1eb7c bi\u1ec7t l\u00e0 trong th\u1ecb tr\u01b0\u1eddng \u0111i ngang (bi\u1ebfn \u0111\u1ed9ng gi\u00e1 theo c\u1ea3 2 h\u01b0\u1edbng nh\u01b0ng trong m\u1ed9t bi\u00ean \u0111\u1ed9 nh\u1ea5t \u0111\u1ecbnh).<\/span><\/p>\n<h2><b>C\u00e1ch ph\u00e2n t\u00edch d\u1ef1a tr\u00ean Bollinger Bands<\/b><\/h2>\n<table>\n<tbody>\n<tr>\n<td><b>H\u00e0nh \u0111\u1ed9ng c\u1ee7a Bollinger Bands<\/b><\/td>\n<td><b>\u00dd ngh\u0129a<\/b><\/td>\n<td><b>Ph\u1ea3n \u1ee9ng ti\u1ec1m n\u0103ng<\/b><\/td>\n<\/tr>\n<tr>\n<td><b>\u0110\u01b0\u1eddng gi\u1eefa \u0111i l\u00ean<\/b><\/td>\n<td><span style=\"font-weight: 400;\">Xu h\u01b0\u1edbng t\u0103ng<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Mua ho\u1eb7c gi\u1eef v\u1ecb th\u1ebf d\u00e0i h\u1ea1n<\/span><\/td>\n<\/tr>\n<tr>\n<td><b>\u0110\u01b0\u1eddng gi\u1eefa \u0111i xu\u1ed1ng<\/b><\/td>\n<td><span style=\"font-weight: 400;\">Xu h\u01b0\u1edbng gi\u1ea3m<\/span><\/td>\n<td><span style=\"font-weight: 400;\">B\u00e1n ho\u1eb7c gi\u1eef v\u1ecb th\u1ebf ng\u1eafn h\u1ea1n<\/span><\/td>\n<\/tr>\n<tr>\n<td><b>D\u1ea3i h\u1eb9p (b\u00f3 h\u1eb9p)<\/b><\/td>\n<td><span style=\"font-weight: 400;\">Bi\u1ebfn \u0111\u1ed9ng th\u1ea5p, ti\u1ec1m n\u0103ng bi\u1ebfn \u0111\u1ed9ng m\u1ea1nh<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Chu\u1ea9n b\u1ecb cho breakout (v\u01b0\u1ee3t \u0111\u1ec9nh\/\u0111\u00e1y), xem x\u00e9t \u0111i\u1ec3m v\u00e0o l\u1ec7nh<\/span><\/td>\n<\/tr>\n<tr>\n<td><b>Gi\u00e1 ch\u1ea1m ho\u1eb7c v\u01b0\u1ee3t qua d\u1ea3i tr\u00ean<\/b><\/td>\n<td><span style=\"font-weight: 400;\">C\u00f3 th\u1ec3 l\u00e0 d\u1ea5u hi\u1ec7u c\u1ee7a \u201cmua qu\u00e1 m\u1ee9c\u201d (s\u1eafp gi\u1ea3m gi\u00e1)<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Xem x\u00e9t b\u00e1n, b\u00e1n kh\u1ed1ng ho\u1eb7c si\u1ebft ch\u1eb7t <a href=\"https:\/\/bitcoinvn.io\/news\/vi\/lenh-stop-loss\/?utm_source=Google+&amp;utm_medium=BollingerBands&amp;utm_id=SEO2025\" target=\"_blank\" rel=\"noopener\">l\u1ec7nh stop-loss<\/a><\/span><\/td>\n<\/tr>\n<tr>\n<td><b>Gi\u00e1 ch\u1ea1m ho\u1eb7c th\u1ea5p h\u01a1n d\u1ea3i d\u01b0\u1edbi<\/b><\/td>\n<td><span style=\"font-weight: 400;\">C\u00f3 th\u1ec3 l\u00e0 d\u1ea5u hi\u1ec7u c\u1ee7a \u201cb\u00e1n qu\u00e1 m\u1ee9c\u201d (s\u1eafp t\u0103ng gi\u00e1)<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Mua v\u00e0o ho\u1eb7c si\u1ebft ch\u1eb7t l\u1ec7nh stop-loss<\/span><\/td>\n<\/tr>\n<tr>\n<td><b>Gi\u00e1 n\u1ea3y l\u00ean t\u1eeb d\u1ea3i d\u01b0\u1edbi<\/b><\/td>\n<td><span style=\"font-weight: 400;\">D\u1ea3i tr\u00ean tr\u1edf th\u00e0nh m\u1ee5c ti\u00eau b\u00e1n ti\u1ec1m n\u0103ng n\u1ebfu gi\u00e1 \u0111\u1ea3o chi\u1ec1u<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Xem x\u00e9t ch\u1ed1t l\u1eddi ho\u1eb7c thi\u1ebft l\u1eadp trailing stop-loss (d\u1eebng l\u1ed7 di \u0111\u1ed9ng)<\/span><\/td>\n<\/tr>\n<tr>\n<td><b>Gi\u00e1 ch\u1ea1m d\u1ea3i tr\u00ean<\/b><\/td>\n<td><span style=\"font-weight: 400;\">D\u1ea3i d\u01b0\u1edbi tr\u1edf th\u00e0nh m\u1ee5c ti\u00eau mua ti\u1ec1m n\u0103ng n\u1ebfu gi\u00e1 \u0111\u1ea3o chi\u1ec1u<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Xem x\u00e9t ch\u1ed1t l\u1eddi ho\u1eb7c thi\u1ebft l\u1eadp trailing stop-loss (d\u1eebng l\u1ed7 di \u0111\u1ed9ng)<\/span><\/td>\n<\/tr>\n<tr>\n<td><b>Gi\u00e1 h\u1ed3i ph\u1ee5c t\u1eeb d\u1ea3i tr\u00ean ho\u1eb7c d\u01b0\u1edbi v\u1ec1 \u0111\u01b0\u1eddng gi\u1eefa<\/b><\/td>\n<td><span style=\"font-weight: 400;\">C\u01a1 h\u1ed9i mua\/b\u00e1n ti\u1ec1m n\u0103ng, \u0111\u1eb7c bi\u1ec7t trong th\u1ecb tr\u01b0\u1eddng \u0111i ngang (&#8220;Bollinger Bounce&#8221;)<\/span><\/td>\n<td><span style=\"font-weight: 400;\">V\u00e0o l\u1ec7nh mua ho\u1eb7c b\u00e1n, \u0111\u1eb7t l\u1ec7nh stop-loss<\/span><\/td>\n<\/tr>\n<tr>\n<td><b>Gi\u00e1 t\u0103ng b\u1eaft \u0111\u1ea7u t\u1eeb d\u1ea3i tr\u00ean v\u00e0 ti\u1ebfp t\u1ee5c v\u01b0\u1ee3t ra ngo\u00e0i, v\u1edbi kh\u1ed1i l\u01b0\u1ee3ng giao d\u1ecbch t\u0103ng<\/b><\/td>\n<td><span style=\"font-weight: 400;\">B\u00e1o hi\u1ec7u breakout (v\u01b0\u1ee3t \u0111\u1ec9nh\/\u0111\u00e1y) ti\u1ec1m n\u0103ng<\/span><\/td>\n<td><span style=\"font-weight: 400;\">V\u00e0o l\u1ec7nh mua, \u0111\u1eb7t stop-loss d\u01b0\u1edbi c\u00e1c \u0111\u00e1y g\u1ea7n \u0111\u00e2y<\/span><\/td>\n<\/tr>\n<tr>\n<td><b>Gi\u1ea3m m\u1ea1nh xu\u1ed1ng d\u01b0\u1edbi d\u1ea3i d\u01b0\u1edbi, v\u1edbi kh\u1ed1i l\u01b0\u1ee3ng giao d\u1ecbch cao<\/b><\/td>\n<td><span style=\"font-weight: 400;\">C\u00f3 th\u1ec3 l\u00e0 s\u1ef1 ph\u00e1 v\u1ee1 ho\u1eb7c b\u1eaft \u0111\u1ea7u c\u1ee7a m\u1ed9t xu h\u01b0\u1edbng gi\u1ea3m m\u1edbi<\/span><\/td>\n<td><span style=\"font-weight: 400;\">V\u00e0o l\u1ec7nh b\u00e1n, \u0111\u1eb7t stop-loss tr\u00ean c\u00e1c \u0111\u1ec9nh g\u1ea7n \u0111\u00e2y<\/span><\/td>\n<\/tr>\n<tr>\n<td><b>D\u1ea3i m\u1edf r\u1ed9ng sau khi b\u00f3 h\u1eb9p<\/b><\/td>\n<td><span style=\"font-weight: 400;\">C\u00f3 th\u1ec3 b\u00e1o hi\u1ec7u breakout (v\u01b0\u1ee3t \u0111\u1ec9nh\/\u0111\u00e1y) s\u1eafp x\u1ea3y ra<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Chu\u1ea9n b\u1ecb v\u00e0o l\u1ec7nh, theo d\u00f5i c\u00e1c t\u00edn hi\u1ec7u x\u00e1c nh\u1eadn<\/span><\/td>\n<\/tr>\n<tr>\n<td><b>D\u1ea3i m\u1edf r\u1ed9ng<\/b><\/td>\n<td><span style=\"font-weight: 400;\">B\u00e1o hi\u1ec7u bi\u1ebfn \u0111\u1ed9ng t\u0103ng v\u00e0 ti\u1ec1m n\u0103ng b\u1eaft \u0111\u1ea7u c\u1ee7a m\u1ed9t xu h\u01b0\u1edbng gi\u00e1 m\u1ea1nh<\/span><\/td>\n<td><span style=\"font-weight: 400;\">\u0110i\u1ec1u ch\u1ec9nh qu\u1ea3n l\u00fd r\u1ee7i ro, c\u00e2n nh\u1eafc c\u00e1c chi\u1ebfn l\u01b0\u1ee3c b\u1eaft trend (xu h\u01b0\u1edbng)<\/span><\/td>\n<\/tr>\n<tr>\n<td><b>D\u1ea3i b\u00f3 h\u1eb9p<\/b><\/td>\n<td><span style=\"font-weight: 400;\">Giai \u0111o\u1ea1n \u00edt bi\u1ebfn \u0111\u1ed9ng v\u00e0 \u0111i ngang, th\u01b0\u1eddng l\u00e0 d\u1ea5u hi\u1ec7u cho th\u1ea5y s\u1eafp x\u1ea3y ra bi\u1ebfn \u0111\u1ed9ng gi\u00e1 l\u1edbn ho\u1eb7c breakout.<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Chu\u1ea9n b\u1ecb cho breakout, xem x\u00e9t \u0111i\u1ec3m v\u00e0o l\u1ec7nh, si\u1ebft ch\u1eb7t l\u1ec7nh stop-loss<\/span><\/td>\n<\/tr>\n<tr>\n<td><b>B\u00f3 h\u1eb9p k\u00e9o d\u00e0i<\/b><\/td>\n<td><span style=\"font-weight: 400;\">C\u00f3 th\u1ec3 cho th\u1ea5y m\u1ed9t breakout m\u1ea1nh m\u1ebd h\u01a1n s\u1eafp t\u1edbi<\/span><\/td>\n<td><span style=\"font-weight: 400;\">Chu\u1ea9n b\u1ecb cho bi\u1ebfn \u0111\u1ed9ng gi\u00e1 l\u1edbn h\u01a1n, t\u0103ng kh\u1ed1i l\u01b0\u1ee3ng giao d\u1ecbch<\/span><\/td>\n<\/tr>\n<tr>\n<td><b>D\u1ea3i h\u1eb9p l\u1ea1i<\/b><\/td>\n<td><span style=\"font-weight: 400;\">C\u00f3 ngh\u0129a l\u00e0 th\u1ecb tr\u01b0\u1eddng ch\u01b0a th\u1ed1ng nh\u1ea5t v\u1ec1 h\u01b0\u1edbng gi\u00e1 t\u01b0\u01a1ng lai<\/span><\/td>\n<td><span style=\"font-weight: 400;\">\u0110i\u1ec1u ch\u1ec9nh qu\u1ea3n l\u00fd r\u1ee7i ro, ch\u1edd \u0111\u1ee3i t\u00edn hi\u1ec7u r\u00f5 r\u00e0ng h\u01a1n tr\u01b0\u1edbc khi v\u00e0o l\u1ec7nh<\/span><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2><b>Bi\u1ebfn \u0111\u1ed9ng gi\u00e1 trong Bollinger Bands<\/b><\/h2>\n<p><span style=\"font-weight: 400;\">Bollinger Bands d\u00f9ng <\/span><b>\u0111\u1ed9 l\u1ec7ch chu\u1ea9n<\/b><span style=\"font-weight: 400;\"> \u0111\u1ec3 \u0111o m\u1ee9c \u0111\u1ed9 gi\u00e1 dao \u0111\u1ed9ng quanh \u0111\u01b0\u1eddng trung b\u00ecnh (MA). Khi th\u1ecb tr\u01b0\u1eddng bi\u1ebfn \u0111\u1ed9ng m\u1ea1nh, d\u1ea3i s\u1ebd m\u1edf r\u1ed9ng; khi th\u1ecb tr\u01b0\u1eddng y\u00ean \u1eafng, d\u1ea3i s\u1ebd thu h\u1eb9p l\u1ea1i.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Trong c\u00e0i \u0111\u1eb7t ph\u1ed5 bi\u1ebfn nh\u1ea5t, d\u1ea3i tr\u00ean v\u00e0 d\u1ea3i d\u01b0\u1edbi \u0111\u01b0\u1ee3c \u0111\u1eb7t <\/span><b>c\u00e1ch \u0111\u01b0\u1eddng SMA 2 \u0111\u1ed9 l\u1ec7ch chu\u1ea9n<\/b><span style=\"font-weight: 400;\">. \u0110i\u1ec1u n\u00e0y c\u00f3 ngh\u0129a: <\/span><b>kho\u1ea3ng 95% bi\u1ebfn \u0111\u1ed9ng gi\u00e1 s\u1ebd n\u1eb1m trong hai d\u1ea3i n\u00e0y<\/b><span style=\"font-weight: 400;\">. \u0110\u00e2y l\u00e0 quy t\u1eafc th\u1ed1ng k\u00ea c\u1ee7a ph\u00e2n ph\u1ed1i chu\u1ea9n v\u00e0 gi\u00fap b\u1ea1n d\u1ec5 d\u00e0ng th\u1ea5y khi gi\u00e1 \u0111ang \u201cb\u1ea5t th\u01b0\u1eddng\u201d.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Nh\u1edd c\u01a1 ch\u1ebf n\u00e0y, Bollinger Bands t\u1ef1 \u0111\u1ed9ng \u0111i\u1ec1u ch\u1ec9nh theo bi\u1ebfn \u0111\u1ed9ng th\u1ef1c t\u1ebf c\u1ee7a th\u1ecb tr\u01b0\u1eddng, n\u00ean ph\u00f9 h\u1ee3p trong nhi\u1ec1u \u0111i\u1ec1u ki\u1ec7n kh\u00e1c nhau.<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Gi\u00e1 v\u01b0\u1ee3t d\u1ea3i tr\u00ean<\/b><span style=\"font-weight: 400;\"> \u2192 \u0111ang cao b\u1ea5t th\u01b0\u1eddng \u2192 kh\u1ea3 n\u0103ng mua qu\u00e1 m\u1ee9c.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Gi\u00e1 r\u01a1i d\u01b0\u1edbi d\u1ea3i d\u01b0\u1edbi<\/b><span style=\"font-weight: 400;\"> \u2192 \u0111ang th\u1ea5p b\u1ea5t th\u01b0\u1eddng \u2192 kh\u1ea3 n\u0103ng b\u00e1n qu\u00e1 m\u1ee9c.<\/span><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">Tuy nhi\u00ean, khi th\u1ecb tr\u01b0\u1eddng \u0111i theo <\/span><b>xu h\u01b0\u1edbng m\u1ea1nh<\/b><span style=\"font-weight: 400;\">, gi\u00e1 c\u00f3 th\u1ec3 n\u1eb1m ngo\u00e0i d\u1ea3i r\u1ea5t l\u00e2u m\u00e0 kh\u00f4ng \u0111\u1ea3o chi\u1ec1u ngay.<\/span><\/p>\n<figure id=\"attachment_16403\" aria-describedby=\"caption-attachment-16403\" style=\"width: 800px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-16403 size-full\" src=\"https:\/\/bitcoinvn.io\/news\/wp-content\/uploads\/2019\/09\/Bollinger-Bands-la-gi-7.jpg\" alt=\"V\u00ed d\u1ee5 minh h\u1ecda v\u1ec1 bi\u1ebfn \u0111\u1ed9ng gi\u00e1 trong Bollinger Bands\" width=\"800\" height=\"640\" srcset=\"https:\/\/bitcoinvn.io\/news\/wp-content\/uploads\/2019\/09\/Bollinger-Bands-la-gi-7.jpg 800w, https:\/\/bitcoinvn.io\/news\/wp-content\/uploads\/2019\/09\/Bollinger-Bands-la-gi-7-300x240.jpg 300w, https:\/\/bitcoinvn.io\/news\/wp-content\/uploads\/2019\/09\/Bollinger-Bands-la-gi-7-768x614.jpg 768w, https:\/\/bitcoinvn.io\/news\/wp-content\/uploads\/2019\/09\/Bollinger-Bands-la-gi-7-696x557.jpg 696w, https:\/\/bitcoinvn.io\/news\/wp-content\/uploads\/2019\/09\/Bollinger-Bands-la-gi-7-525x420.jpg 525w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><figcaption id=\"caption-attachment-16403\" class=\"wp-caption-text\">V\u00ed d\u1ee5 minh h\u1ecda v\u1ec1 bi\u1ebfn \u0111\u1ed9ng gi\u00e1 trong Bollinger Bands<\/figcaption><\/figure>\n<h3><b>T\u00edn hi\u1ec7u t\u1eeb d\u1ea3i tr\u00ean (Upper bands)<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">B\u1eb1ng c\u00e1ch ki\u1ec3m tra m\u1ed1i quan h\u1ec7 gi\u1eefa gi\u00e1 v\u00e0 d\u1ea3i tr\u00ean, b\u1ea1n c\u00f3 th\u1ec3:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">X\u00e1c \u0111\u1ecbnh t\u00ecnh tr\u1ea1ng mua qu\u00e1 m\u1ee9c.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Ki\u1ec3m tra kh\u1ea3 n\u0103ng \u0111\u1ea3o chi\u1ec1u gi\u00e1 ho\u1eb7c \u0111\u00e0 t\u0103ng ch\u1eadm l\u1ea1i.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">T\u00ecm th\u1eddi \u0111i\u1ec3m bi\u1ebfn \u0111\u1ed9ng gia t\u0103ng.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Thi\u1ebft l\u1eadp m\u1ee5c ti\u00eau gi\u00e1 d\u1ef1a tr\u00ean c\u00e1c chi\u1ebfn l\u01b0\u1ee3c h\u1ed3i quy trung b\u00ecnh (Mean reversion).<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">\u0110\u00e1nh gi\u00e1 s\u1ee9c m\u1ea1nh c\u1ee7a m\u1ed9t xu h\u01b0\u1edbng.<\/span><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">Khi gi\u00e1 ch\u1ea1m ho\u1eb7c v\u01b0\u1ee3t qua d\u1ea3i tr\u00ean:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Th\u01b0\u1eddng \u0111\u01b0\u1ee3c hi\u1ec3u l\u00e0 ch\u1ee9ng kho\u00e1n\/crypto \u0111ang \u0111\u01b0\u1ee3c mua qu\u00e1 m\u1ee9c:<\/b><span style=\"font-weight: 400;\"> Gi\u00e1 t\u00e0i s\u1ea3n cao h\u01a1n m\u1ee9c \u0111\u1ecbnh gi\u00e1 th\u00f4ng th\u01b0\u1eddng, cho th\u1ea5y kh\u1ea3 n\u0103ng \u0111\u1ea3o chi\u1ec1u ho\u1eb7c \u0111\u00e0 t\u0103ng ch\u1eadm l\u1ea1i.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Khi gi\u00e1 ch\u1ea1m ho\u1eb7c v\u01b0\u1ee3t qua d\u1ea3i tr\u00ean:<\/b><span style=\"font-weight: 400;\"> Cho th\u1ea5y t\u00ednh bi\u1ebfn \u0111\u1ed9ng t\u0103ng. Bollinger Bands t\u1ef1 \u0111i\u1ec1u ch\u1ec9nh theo bi\u1ebfn \u0111\u1ed9ng, khi\u1ebfn kho\u1ea3ng c\u00e1ch gi\u1eefa d\u1ea3i tr\u00ean v\u00e0 d\u01b0\u1edbi m\u1edf r\u1ed9ng, th\u01b0\u1eddng do c\u00e1c y\u1ebfu t\u1ed1 nh\u01b0 tin t\u1ee9c kinh t\u1ebf, b\u00e1o c\u00e1o thu nh\u1eadp v\u00e0 c\u00e1c s\u1ef1 ki\u1ec7n th\u1ecb tr\u01b0\u1eddng.<\/span><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">Tr\u00ean th\u1ecb tr\u01b0\u1eddng \u0111i ngang, d\u1ea3i tr\u00ean c\u00f3 th\u1ec3 l\u00e0 m\u1ee5c ti\u00eau gi\u00e1 cho c\u00e1c nh\u00e0 \u0111\u1ea7u t\u01b0 s\u1eed d\u1ee5ng chi\u1ebfn l\u01b0\u1ee3c h\u1ed3i quy trung b\u00ecnh. Khi gi\u00e1 dao \u0111\u1ed9ng gi\u1eefa d\u1ea3i tr\u00ean v\u00e0 d\u1ea3i d\u01b0\u1edbi m\u00e0 kh\u00f4ng c\u00f3 xu h\u01b0\u1edbng r\u00f5 r\u00e0ng, vi\u1ec7c ch\u1ea1m d\u1ea3i tr\u00ean c\u00f3 th\u1ec3 l\u00e0 t\u00edn hi\u1ec7u b\u00e1n ho\u1eb7c b\u00e1n kh\u1ed1ng, khi nh\u00e0 giao d\u1ecbch d\u1ef1 \u0111o\u00e1n gi\u00e1 s\u1ebd quay tr\u1edf l\u1ea1i g\u1ea7n ho\u1eb7c d\u01b0\u1edbi \u0111\u01b0\u1eddng gi\u1eefa.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Trong xu h\u01b0\u1edbng t\u0103ng m\u1ea1nh, gi\u00e1 c\u00f3 th\u1ec3 nhi\u1ec1u l\u1ea7n ch\u1ea1m ho\u1eb7c duy tr\u00ec \u1edf d\u1ea3i tr\u00ean trong th\u1eddi gian d\u00e0i. Vi\u1ec7c gi\u00e1 duy tr\u00ec \u1edf tr\u00ean d\u1ea3i tr\u00ean c\u00f3 th\u1ec3 cho th\u1ea5y s\u1ee9c mua m\u1ea1nh m\u1ebd v\u00e0 l\u00e0 d\u1ea5u hi\u1ec7u xu h\u01b0\u1edbng c\u00f3 th\u1ec3 ti\u1ebfp t\u1ee5c. Tuy nhi\u00ean, nh\u00e0 \u0111\u1ea7u t\u01b0 th\u01b0\u1eddng x\u00e1c nh\u1eadn \u0111i\u1ec1u n\u00e0y b\u1eb1ng c\u00e1c ch\u1ec9 b\u00e1o ho\u1eb7c k\u1ef9 thu\u1eadt kh\u00e1c.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">D\u1ea3i tr\u00ean c\u0169ng c\u00f3 th\u1ec3 l\u00e0 n\u01a1i x\u1ea3y ra breakout (v\u01b0\u1ee3t \u0111\u1ec9nh\/\u0111\u00e1y). N\u1ebfu gi\u00e1 b\u1eaft \u0111\u1ea7u t\u1eeb d\u1ea3i tr\u00ean v\u00e0 ti\u1ebfp t\u1ee5c v\u01b0\u1ee3t ra ngo\u00e0i, \u0111\u1eb7c bi\u1ec7t khi c\u00f3 s\u1ef1 gia t\u0103ng kh\u1ed1i l\u01b0\u1ee3ng giao d\u1ecbch, \u0111\u00e2y c\u00f3 th\u1ec3 l\u00e0 d\u1ea5u hi\u1ec7u cho th\u1ea5y t\u00e0i s\u1ea3n \u0111ang b\u1eaft \u0111\u1ea7u m\u1ed9t xu h\u01b0\u1edbng m\u1edbi ho\u1eb7c \u0111\u1ea9y nhanh xu h\u01b0\u1edbng hi\u1ec7n t\u1ea1i. B\u1ea1n c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng t\u00edn hi\u1ec7u n\u00e0y \u0111\u1ec3 giao d\u1ecbch theo h\u01b0\u1edbng breakout.<\/span><\/p>\n<figure id=\"attachment_16398\" aria-describedby=\"caption-attachment-16398\" style=\"width: 800px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-16398 size-full\" src=\"https:\/\/bitcoinvn.io\/news\/wp-content\/uploads\/2019\/09\/Bollinger-Bands-la-gi-2.jpg\" alt=\"T\u00edn hi\u1ec7u t\u1eeb d\u1ea3i tr\u00ean gi\u00fap b\u1ea1n x\u00e1c \u0111\u1ecbnh t\u00ecnh tr\u1ea1ng mua qu\u00e1 m\u1ee9c\" width=\"800\" height=\"548\" srcset=\"https:\/\/bitcoinvn.io\/news\/wp-content\/uploads\/2019\/09\/Bollinger-Bands-la-gi-2.jpg 800w, https:\/\/bitcoinvn.io\/news\/wp-content\/uploads\/2019\/09\/Bollinger-Bands-la-gi-2-300x206.jpg 300w, https:\/\/bitcoinvn.io\/news\/wp-content\/uploads\/2019\/09\/Bollinger-Bands-la-gi-2-768x526.jpg 768w, https:\/\/bitcoinvn.io\/news\/wp-content\/uploads\/2019\/09\/Bollinger-Bands-la-gi-2-100x70.jpg 100w, https:\/\/bitcoinvn.io\/news\/wp-content\/uploads\/2019\/09\/Bollinger-Bands-la-gi-2-218x150.jpg 218w, https:\/\/bitcoinvn.io\/news\/wp-content\/uploads\/2019\/09\/Bollinger-Bands-la-gi-2-696x477.jpg 696w, https:\/\/bitcoinvn.io\/news\/wp-content\/uploads\/2019\/09\/Bollinger-Bands-la-gi-2-613x420.jpg 613w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><figcaption id=\"caption-attachment-16398\" class=\"wp-caption-text\">T\u00edn hi\u1ec7u t\u1eeb d\u1ea3i tr\u00ean gi\u00fap b\u1ea1n x\u00e1c \u0111\u1ecbnh t\u00ecnh tr\u1ea1ng mua qu\u00e1 m\u1ee9c<\/figcaption><\/figure>\n<h3><b>T\u00edn hi\u1ec7u t\u1eeb d\u1ea3i d\u01b0\u1edbi (Lower bands)<\/b><\/h3>\n<p><span style=\"font-weight: 400;\">D\u1ea3i d\u01b0\u1edbi c\u1ee7a Bollinger Bands gi\u00fap x\u00e1c \u0111\u1ecbnh t\u00ecnh tr\u1ea1ng &#8220;b\u00e1n qu\u00e1 m\u1ee9c&#8221; v\u00e0 l\u00e0 \u0111i\u1ec3m tham chi\u1ebfu cho chi\u1ebfn l\u01b0\u1ee3c h\u1ed3i quy trung b\u00ecnh ho\u1eb7c t\u00ecm ki\u1ebfm kh\u1ea3 n\u0103ng \u0111\u1ea3o chi\u1ec1u gi\u00e1.<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Khi gi\u00e1 ch\u1ea1m ho\u1eb7c th\u1ea5p h\u01a1n d\u1ea3i d\u01b0\u1edbi, \u0111i\u1ec1u n\u00e0y c\u00f3 th\u1ec3 cho th\u1ea5y t\u00e0i s\u1ea3n \u0111ang b\u1ecb b\u00e1n qu\u00e1 m\u1ee9c ho\u1eb7c \u00e1p l\u1ef1c b\u00e1n \u0111\u00e3 \u0111i qu\u00e1 xa. T\u00ecnh tr\u1ea1ng n\u00e0y c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn \u0111\u1ea3o chi\u1ec1u ho\u1eb7c t\u1ea1m d\u1eebng xu h\u01b0\u1edbng gi\u1ea3m.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Khi gi\u00e1 ch\u1ea1m d\u1ea3i d\u01b0\u1edbi, \u0111i\u1ec1u n\u00e0y cho th\u1ea5y bi\u1ebfn \u0111\u1ed9ng trong xu h\u01b0\u1edbng gi\u1ea3m \u0111ang m\u1ea1nh h\u01a1n. Tuy nhi\u00ean, khi Bollinger Bands thu h\u1eb9p l\u1ea1i sau m\u1ed9t giai \u0111o\u1ea1n bi\u1ebfn \u0111\u1ed9ng r\u1ed9ng, \u0111i\u1ec1u \u0111\u00f3 c\u00f3 ngh\u0129a l\u00e0 bi\u1ebfn \u0111\u1ed9ng gi\u1ea3m xu\u1ed1ng, c\u00f3 th\u1ec3 b\u00e1o hi\u1ec7u m\u1ed9t s\u1ef1 bi\u1ebfn \u0111\u1ed9ng gi\u00e1 \u0111\u00e1ng k\u1ec3 khi gi\u00e1 \u0111i ngang v\u00e0 t\u00edch l\u0169y.<\/span><\/li>\n<\/ul>\n<p><span style=\"font-weight: 400;\">Nh\u00e0 \u0111\u1ea7u t\u01b0 theo chi\u1ebfn l\u01b0\u1ee3c h\u1ed3i quy trung b\u00ecnh c\u00f3 th\u1ec3 xem d\u1ea3i d\u01b0\u1edbi l\u00e0 m\u1ee5c ti\u00eau mua ti\u1ec1m n\u0103ng, v\u00ec gi\u00e1 c\u00f3 xu h\u01b0\u1edbng h\u1ed3i ph\u1ee5c v\u1ec1 \u0111\u01b0\u1eddng gi\u1eefa sau khi gi\u1ea3m xu\u1ed1ng.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Khi gi\u00e1 duy tr\u00ec \u1edf d\u01b0\u1edbi d\u1ea3i d\u01b0\u1edbi c\u1ee7a Bollinger Bands, \u0111\u00e2y l\u00e0 d\u1ea5u hi\u1ec7u m\u1ea1nh m\u1ebd cho th\u1ea5y xu h\u01b0\u1edbng gi\u1ea3m gi\u00e1 \u0111ang di\u1ec5n ra. \u0110\u1ec3 \u0111\u1ea3m b\u1ea3o t\u00ednh ch\u00ednh x\u00e1c c\u1ee7a t\u00edn hi\u1ec7u n\u00e0y, nh\u00e0 \u0111\u1ea7u t\u01b0 c\u1ea7n k\u1ebft h\u1ee3p v\u1edbi c\u00e1c ch\u1ec9 b\u00e1o kh\u00e1c \u0111\u1ec3 x\u00e1c nh\u1eadn v\u00e0 tr\u00e1nh c\u00e1c t\u00edn hi\u1ec7u sai l\u1ec7ch.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Khi gi\u00e1 bi\u1ebfn \u0111\u1ed9ng m\u1ea1nh xu\u1ed1ng d\u01b0\u1edbi d\u1ea3i d\u01b0\u1edbi, \u0111\u1ed3ng th\u1eddi c\u00f3 kh\u1ed1i l\u01b0\u1ee3ng giao d\u1ecbch cao v\u00e0 xu\u1ea5t hi\u1ec7n c\u00e1c t\u00edn hi\u1ec7u gi\u1ea3m gi\u00e1 kh\u00e1c, \u0111\u00e2y c\u00f3 th\u1ec3 l\u00e0 d\u1ea5u hi\u1ec7u cho m\u1ed9t \u0111i\u1ec3m breakout (v\u01b0\u1ee3t \u0111\u1ec9nh\/\u0111\u00e1y) ti\u1ec1m n\u0103ng ho\u1eb7c b\u1eaft \u0111\u1ea7u m\u1ed9t xu h\u01b0\u1edbng gi\u1ea3m m\u1edbi. \u0110\u00e2y th\u01b0\u1eddng l\u00e0 t\u00edn hi\u1ec7u \u0111\u1ec3 b\u00e1n ho\u1eb7c b\u00e1n kh\u1ed1ng.<\/span><\/p>\n<figure id=\"attachment_16401\" aria-describedby=\"caption-attachment-16401\" style=\"width: 800px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-16401 size-full\" src=\"https:\/\/bitcoinvn.io\/news\/wp-content\/uploads\/2019\/09\/Bollinger-Bands-la-gi-5.jpg\" alt=\"T\u00edn hi\u1ec7u t\u1eeb d\u1ea3i d\u01b0\u1edbi gi\u00fap b\u1ea1n x\u00e1c \u0111\u1ecbnh t\u00ecnh tr\u1ea1ng b\u00e1n qu\u00e1 m\u1ee9c\" width=\"800\" height=\"435\" srcset=\"https:\/\/bitcoinvn.io\/news\/wp-content\/uploads\/2019\/09\/Bollinger-Bands-la-gi-5.jpg 800w, https:\/\/bitcoinvn.io\/news\/wp-content\/uploads\/2019\/09\/Bollinger-Bands-la-gi-5-300x163.jpg 300w, https:\/\/bitcoinvn.io\/news\/wp-content\/uploads\/2019\/09\/Bollinger-Bands-la-gi-5-768x418.jpg 768w, https:\/\/bitcoinvn.io\/news\/wp-content\/uploads\/2019\/09\/Bollinger-Bands-la-gi-5-696x378.jpg 696w, https:\/\/bitcoinvn.io\/news\/wp-content\/uploads\/2019\/09\/Bollinger-Bands-la-gi-5-772x420.jpg 772w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><figcaption id=\"caption-attachment-16401\" class=\"wp-caption-text\">T\u00edn hi\u1ec7u t\u1eeb d\u1ea3i d\u01b0\u1edbi gi\u00fap b\u1ea1n x\u00e1c \u0111\u1ecbnh t\u00ecnh tr\u1ea1ng b\u00e1n qu\u00e1 m\u1ee9c<\/figcaption><\/figure>\n<h2><b>\u00dd ngh\u0129a c\u1ee7a d\u1ea3i m\u1edf r\u1ed9ng (Widening bands)<\/b><\/h2>\n<p><span style=\"font-weight: 400;\">Bollinger Bands m\u1edf r\u1ed9ng b\u00e1o hi\u1ec7u s\u1ef1 gia t\u0103ng bi\u1ebfn \u0111\u1ed9ng v\u00ec \u0111\u1ed9 l\u1ec7ch chu\u1ea9n c\u1ee7a gi\u00e1 t\u0103ng l\u00ean. Do \u0111\u00f3, c\u00e1c bi\u1ebfn \u0111\u1ed9ng gi\u00e1 tr\u1edf n\u00ean \u0111\u00e1ng k\u1ec3 h\u01a1n so v\u1edbi th\u1eddi gian g\u1ea7n \u0111\u00e2y. Nguy\u00ean nh\u00e2n d\u1eabn \u0111\u1ebfn vi\u1ec7c \u201cm\u1edf r\u1ed9ng\u201d c\u00f3 th\u1ec3 bao g\u1ed3m th\u00f4ng tin kinh t\u1ebf, b\u00e1o c\u00e1o thu nh\u1eadp, c\u00e1c s\u1ef1 ki\u1ec7n ch\u00ednh tr\u1ecb \u0111\u1ecba ph\u01b0\u01a1ng ho\u1eb7c nh\u1eefng thay \u0111\u1ed5i \u0111\u1ed9t ng\u1ed9t trong t\u00e2m l\u00fd th\u1ecb tr\u01b0\u1eddng.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">\u0110\u1ed1i v\u1edbi nh\u00e0 giao d\u1ecbch, bi\u1ebfn \u0111\u1ed9ng gia t\u0103ng mang l\u1ea1i c\u01a1 h\u1ed9i l\u1ee3i nhu\u1eadn l\u1edbn nh\u01b0ng c\u0169ng \u0111i k\u00e8m v\u1edbi r\u1ee7i ro thua l\u1ed7 cao h\u01a1n.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Khi Bollinger Bands m\u1edf r\u1ed9ng, \u0111i\u1ec1u n\u00e0y c\u00f3 th\u1ec3 cho th\u1ea5y m\u1ed9t xu h\u01b0\u1edbng gi\u00e1 m\u1edbi \u0111ang b\u1eaft \u0111\u1ea7u, v\u1edbi bi\u1ebfn \u0111\u1ed9ng t\u0103ng l\u00ean v\u00e0 kh\u1ea3 n\u0103ng gi\u00e1 duy tr\u00ec \u1ed5n \u0111\u1ecbnh trong th\u1eddi gian d\u00e0i c\u0169ng t\u0103ng cao. Tuy nhi\u00ean, \u0111\u1ec3 \u0111\u01b0a ra quy\u1ebft \u0111\u1ecbnh giao d\u1ecbch, b\u1ea1n c\u1ea7n x\u00e1c nh\u1eadn th\u00f4ng qua c\u00e1c ch\u1ec9 b\u00e1o ho\u1eb7c m\u00f4 h\u00ecnh gi\u00e1 kh\u00e1c.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Sau khi Bollinger Bands m\u1edf r\u1ed9ng t\u1eeb giai \u0111o\u1ea1n co h\u1eb9p, nhi\u1ec1u nh\u00e0 \u0111\u1ea7u t\u01b0 tin r\u1eb1ng \u0111\u00e2y l\u00e0 t\u00edn hi\u1ec7u s\u1eafp x\u1ea3y ra breakout. M\u1eb7c d\u00f9 Bollinger Bands kh\u00f4ng cho bi\u1ebft h\u01b0\u1edbng breakout, nh\u00e0 \u0111\u1ea7u t\u01b0 c\u00f3 th\u1ec3 \u0111\u00e1nh gi\u00e1 h\u01b0\u1edbng ti\u1ec1m n\u0103ng b\u1eb1ng c\u00e1ch so s\u00e1nh bi\u1ebfn \u0111\u1ed9ng gi\u00e1 v\u1edbi c\u00e1c d\u1ea3i v\u00e0 c\u00e1c ch\u1ec9 b\u00e1o kh\u00e1c.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">C\u00e1c nh\u00e0 \u0111\u1ea7u t\u01b0 xem x\u00e9t l\u1ea1i chi\u1ebfn l\u01b0\u1ee3c qu\u1ea3n l\u00fd r\u1ee7i ro v\u00ec Bollinger Bands m\u1edf r\u1ed9ng khi bi\u1ebfn \u0111\u1ed9ng gia t\u0103ng. B\u1ea1n c\u00f3 th\u1ec3 c\u1eaft gi\u1ea3m v\u1ecb th\u1ebf ho\u1eb7c \u0111a d\u1ea1ng h\u00f3a danh m\u1ee5c \u0111\u1ea7u t\u01b0 \u0111\u1ec3 gi\u1ea3m r\u1ee7i ro.<\/span><\/p>\n<figure id=\"attachment_16405\" aria-describedby=\"caption-attachment-16405\" style=\"width: 800px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-16405 size-full\" src=\"https:\/\/bitcoinvn.io\/news\/wp-content\/uploads\/2019\/09\/Bollinger-Bands-la-gi-9.jpg\" alt=\"D\u1ea3i m\u1edf r\u1ed9ng b\u00e1o hi\u1ec7u m\u1ed9t xu h\u01b0\u1edbng m\u1edbi s\u1eafp b\u1eaft \u0111\u1ea7u\" width=\"800\" height=\"542\" srcset=\"https:\/\/bitcoinvn.io\/news\/wp-content\/uploads\/2019\/09\/Bollinger-Bands-la-gi-9.jpg 800w, https:\/\/bitcoinvn.io\/news\/wp-content\/uploads\/2019\/09\/Bollinger-Bands-la-gi-9-300x203.jpg 300w, https:\/\/bitcoinvn.io\/news\/wp-content\/uploads\/2019\/09\/Bollinger-Bands-la-gi-9-768x520.jpg 768w, https:\/\/bitcoinvn.io\/news\/wp-content\/uploads\/2019\/09\/Bollinger-Bands-la-gi-9-696x472.jpg 696w, https:\/\/bitcoinvn.io\/news\/wp-content\/uploads\/2019\/09\/Bollinger-Bands-la-gi-9-620x420.jpg 620w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><figcaption id=\"caption-attachment-16405\" class=\"wp-caption-text\">D\u1ea3i m\u1edf r\u1ed9ng b\u00e1o hi\u1ec7u m\u1ed9t xu h\u01b0\u1edbng m\u1edbi s\u1eafp b\u1eaft \u0111\u1ea7u<\/figcaption><\/figure>\n<h2><b>\u00dd ngh\u0129a c\u1ee7a d\u1ea3i b\u00f3 h\u1eb9p (Tightening bands)<\/b><\/h2>\n<p><b>Bollinger Bands b\u00f3 h\u1eb9p cho th\u1ea5y th\u1ecb tr\u01b0\u1eddng \u0111ang \u00edt bi\u1ebfn \u0111\u1ed9ng h\u01a1n<\/b><span style=\"font-weight: 400;\">. \u0110i\u1ec1u n\u00e0y c\u00f3 th\u1ec3 cho th\u1ea5y bi\u1ebfn \u0111\u1ed9ng gi\u00e1 \u0111\u01b0\u1ee3c ki\u1ec3m so\u00e1t ch\u1eb7t ch\u1ebd h\u01a1n, c\u00f3 th\u1ec3 do \u00edt kh\u1ed1i l\u01b0\u1ee3ng giao d\u1ecbch ho\u1eb7c s\u1ef1 quan t\u00e2m c\u1ee7a th\u1ecb tr\u01b0\u1eddng trong ng\u1eafn h\u1ea1n. Giai \u0111o\u1ea1n n\u00e0y c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c coi l\u00e0 th\u1eddi gian t\u00edch l\u0169y.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">M\u1eb7c d\u00f9 d\u1ea3i b\u00f3 h\u1eb9p b\u00e1o hi\u1ec7u s\u1ef1 \u00edt bi\u1ebfn \u0111\u1ed9ng, c\u00e1c nh\u00e0 ph\u00e2n t\u00edch th\u01b0\u1eddng coi \u0111\u00e2y l\u00e0 d\u1ea5u hi\u1ec7u b\u00e1o tr\u01b0\u1edbc c\u1ee7a bi\u1ebfn \u0111\u1ed9ng gi\u00e1 l\u1edbn ho\u1eb7c breakout. Nh\u00e0 giao d\u1ecbch theo d\u00f5i c\u00e1c squeeze (thu h\u1eb9p) v\u00ec ch\u00fang cho th\u1ea5y th\u1ecb tr\u01b0\u1eddng t\u00edch l\u0169y n\u0103ng l\u01b0\u1ee3ng cho s\u1ef1 thay \u0111\u1ed5i \u0111\u00e1ng k\u1ec3. Squeeze c\u00e0ng k\u00e9o d\u00e0i, breakout c\u00e0ng m\u1ea1nh. \u0110i\u1ec1u n\u00e0y d\u1ef1a tr\u00ean nguy\u00ean t\u1eafc: giai \u0111o\u1ea1n bi\u1ebfn \u0111\u1ed9ng th\u1ea5p th\u01b0\u1eddng theo sau l\u00e0 bi\u1ebfn \u0111\u1ed9ng cao, nh\u01b0ng kh\u00f4ng cho bi\u1ebft h\u01b0\u1edbng breakout.\u00a0<\/span><\/p>\n<p><span style=\"font-weight: 400;\">Trong giai \u0111o\u1ea1n b\u00f3 h\u1eb9p, nh\u00e0 giao d\u1ecbch c\u00f3 th\u1ec3 \u0111i\u1ec1u ch\u1ec9nh chi\u1ebfn l\u01b0\u1ee3c qu\u1ea3n l\u00fd r\u1ee7i ro, thu h\u1eb9p l\u1ec7nh d\u1eebng l\u1ed7 ph\u00f9 h\u1ee3p v\u1edbi m\u1ee9c bi\u1ebfn \u0111\u1ed9ng th\u1ea5p trong khi chu\u1ea9n b\u1ecb cho bi\u1ebfn \u0111\u1ed9ng t\u0103ng.<\/span><\/p>\n<p><span style=\"font-weight: 400;\">S\u1ef1 thu h\u1eb9p c\u1ee7a Bollinger Bands cho th\u1ea5y thi\u1ebfu s\u1ef1 \u0111\u1ed3ng thu\u1eadn v\u1ec1 h\u01b0\u1edbng gi\u00e1 t\u01b0\u01a1ng lai, d\u1eabn \u0111\u1ebfn gi\u00e1 dao \u0111\u1ed9ng trong ph\u1ea1m vi h\u1eb9p cho \u0111\u1ebfn khi c\u00f3 th\u00f4ng tin m\u1edbi ho\u1eb7c th\u1ecb tr\u01b0\u1eddng breakout.<\/span><\/p>\n<figure id=\"attachment_16406\" aria-describedby=\"caption-attachment-16406\" style=\"width: 800px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-16406 size-full\" src=\"https:\/\/bitcoinvn.io\/news\/wp-content\/uploads\/2019\/09\/Bollinger-Bands-la-gi-10.jpg\" alt=\"D\u1ea3i b\u00f3 h\u1eb9p trong Bollinger Bands (Ngu\u1ed3n: Investopedia)\" width=\"800\" height=\"568\" srcset=\"https:\/\/bitcoinvn.io\/news\/wp-content\/uploads\/2019\/09\/Bollinger-Bands-la-gi-10.jpg 800w, https:\/\/bitcoinvn.io\/news\/wp-content\/uploads\/2019\/09\/Bollinger-Bands-la-gi-10-300x213.jpg 300w, https:\/\/bitcoinvn.io\/news\/wp-content\/uploads\/2019\/09\/Bollinger-Bands-la-gi-10-768x545.jpg 768w, https:\/\/bitcoinvn.io\/news\/wp-content\/uploads\/2019\/09\/Bollinger-Bands-la-gi-10-100x70.jpg 100w, https:\/\/bitcoinvn.io\/news\/wp-content\/uploads\/2019\/09\/Bollinger-Bands-la-gi-10-696x494.jpg 696w, https:\/\/bitcoinvn.io\/news\/wp-content\/uploads\/2019\/09\/Bollinger-Bands-la-gi-10-592x420.jpg 592w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><figcaption id=\"caption-attachment-16406\" class=\"wp-caption-text\">D\u1ea3i b\u00f3 h\u1eb9p trong Bollinger Bands (Ngu\u1ed3n: Investopedia)<\/figcaption><\/figure>\n<h2><b>\u0110\u1ed9 tin c\u1eady c\u1ee7a Bollinger Bands<\/b><\/h2>\n<p><span style=\"font-weight: 400;\">Hi\u1ec7u qu\u1ea3 c\u1ee7a c\u00f4ng c\u1ee5 n\u00e0y ph\u1ee5 thu\u1ed9c v\u00e0o t\u00e0i s\u1ea3n giao d\u1ecbch, c\u00e0i \u0111\u1eb7t \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng v\u00e0 c\u00e1c y\u1ebfu t\u1ed1 kh\u00e1c nh\u01b0:<\/span><\/p>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>T\u00e0i s\u1ea3n giao d\u1ecbch:<\/b><span style=\"font-weight: 400;\"> M\u1ed7i ch\u1ee9ng kho\u00e1n c\u00f3 m\u1ee9c bi\u1ebfn \u0111\u1ed9ng ri\u00eang, \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn \u0111\u1ed9 hi\u1ec7u qu\u1ea3 c\u1ee7a Bollinger Bands trong d\u1ef1 \u0111o\u00e1n gi\u00e1. C\u00e1c t\u00e0i s\u1ea3n th\u01b0\u1eddng c\u00f3 bi\u1ebfn \u0111\u1ed9ng \u0111\u1ed9t ng\u1ed9t c\u00f3 th\u1ec3 kh\u00f4ng ph\u00f9 h\u1ee3p v\u1edbi ph\u00e2n t\u00edch Bollinger Bands.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>T\u00f9y ch\u1ecdn c\u00e0i \u0111\u1eb7t: <\/b><span style=\"font-weight: 400;\">Thi\u1ebft l\u1eadp m\u1eb7c \u0111\u1ecbnh cho Bollinger Bands l\u00e0 SMA 20 k\u1ef3 v\u1edbi c\u00e1c d\u1ea3i c\u00e1ch nhau hai \u0111\u1ed9 l\u1ec7ch chu\u1ea9n. Tuy nhi\u00ean, kh\u00f4ng ph\u1ea3i l\u00fac n\u00e0o c\u0169ng ph\u00f9 h\u1ee3p cho m\u1ecdi t\u00ecnh hu\u1ed1ng giao d\u1ecbch v\u00e0 khung th\u1eddi gian. \u0110i\u1ec1u ch\u1ec9nh thi\u1ebft l\u1eadp c\u00f3 th\u1ec3 t\u1ed1i \u01b0u h\u00f3a hi\u1ec7u qu\u1ea3, nh\u01b0ng \u0111\u00f2i h\u1ecfi hi\u1ec3u bi\u1ebft s\u00e2u s\u1eafc v\u1ec1 th\u1ecb tr\u01b0\u1eddng v\u00e0 t\u1eebng lo\u1ea1i t\u00e0i s\u1ea3n.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Ch\u1ec9 b\u00e1o kh\u00e1c: <\/b><span style=\"font-weight: 400;\">Bollinger Bands hi\u1ec7u qu\u1ea3 nh\u1ea5t khi \u0111\u01b0\u1ee3c k\u1ebft h\u1ee3p v\u1edbi c\u00e1c c\u00f4ng c\u1ee5 v\u00e0 ch\u1ec9 b\u00e1o kh\u00e1c nh\u01b0 RSI (Ch\u1ec9 s\u1ed1 s\u1ee9c m\u1ea1nh t\u01b0\u01a1ng \u0111\u1ed1i) ho\u1eb7c MACD (Ph\u00e2n k\u1ef3 h\u1ed9i t\u1ee5 \u0111\u01b0\u1eddng trung b\u00ecnh \u0111\u1ed9ng). Nh\u1eefng c\u00f4ng c\u1ee5 n\u00e0y c\u00f3 th\u1ec3 cung c\u1ea5p b\u1ed1i c\u1ea3nh v\u00e0 gi\u00fap x\u00e1c nh\u1eadn t\u00edn hi\u1ec7u t\u1eeb Bollinger Bands.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>T\u00ecnh hu\u1ed1ng b\u1ea5t ng\u1edd: <\/b><span style=\"font-weight: 400;\">Bollinger Bands d\u1ef1a tr\u00ean \u0111\u1ed9 l\u1ec7ch chu\u1ea9n v\u00e0 gi\u1ea3 \u0111\u1ecbnh r\u1eb1ng l\u1ee3i nhu\u1eadn tu\u00e2n theo ph\u00e2n ph\u1ed1i chu\u1ea9n. Tuy nhi\u00ean, th\u1ecb tr\u01b0\u1eddng t\u00e0i ch\u00ednh c\u00f3 th\u1ec3 c\u00f3 bi\u1ebfn \u0111\u1ed9ng b\u1ea5t ng\u1edd v\u01b0\u1ee3t ra ngo\u00e0i d\u1ea3i.<\/span><\/li>\n<\/ul>\n<figure id=\"attachment_16399\" aria-describedby=\"caption-attachment-16399\" style=\"width: 800px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-16399 size-full\" src=\"https:\/\/bitcoinvn.io\/news\/wp-content\/uploads\/2019\/09\/Bollinger-Bands-la-gi-3.jpg\" alt=\"\u0110\u1ed9 tin c\u1eady c\u1ee7a Bollinger Bands ph\u1ee5 thu\u1ed9c v\u00e0o nhi\u1ec1u y\u1ebfu t\u1ed1\" width=\"800\" height=\"480\" srcset=\"https:\/\/bitcoinvn.io\/news\/wp-content\/uploads\/2019\/09\/Bollinger-Bands-la-gi-3.jpg 800w, https:\/\/bitcoinvn.io\/news\/wp-content\/uploads\/2019\/09\/Bollinger-Bands-la-gi-3-300x180.jpg 300w, https:\/\/bitcoinvn.io\/news\/wp-content\/uploads\/2019\/09\/Bollinger-Bands-la-gi-3-768x461.jpg 768w, https:\/\/bitcoinvn.io\/news\/wp-content\/uploads\/2019\/09\/Bollinger-Bands-la-gi-3-696x418.jpg 696w, https:\/\/bitcoinvn.io\/news\/wp-content\/uploads\/2019\/09\/Bollinger-Bands-la-gi-3-700x420.jpg 700w\" sizes=\"auto, (max-width: 800px) 100vw, 800px\" \/><figcaption id=\"caption-attachment-16399\" class=\"wp-caption-text\">\u0110\u1ed9 tin c\u1eady c\u1ee7a Bollinger Bands ph\u1ee5 thu\u1ed9c v\u00e0o nhi\u1ec1u y\u1ebfu t\u1ed1<\/figcaption><\/figure>\n<h2><b>C\u00e2u h\u1ecfi th\u01b0\u1eddng g\u1eb7p v\u1ec1 ch\u1ee7 \u0111\u1ec1 Bollinger Bands l\u00e0 g\u00ec<\/b><\/h2>\n<h3><b>\u0110\u00e2u l\u00e0 c\u00e1c ch\u1ec9 b\u00e1o k\u1ef9 thu\u1eadt t\u01b0\u01a1ng t\u1ef1 Bollinger Bands?<\/b><\/h3>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">K\u00eanh Kelter (Keltner channels)<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">\u0110\u01b0\u1eddng trung b\u00ecnh (Moving average envelopes)<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">K\u00eanh Donchian (Donchian channels)<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Ph\u1ea1m vi th\u1ef1c trung b\u00ecnh (Average true range)<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><span style=\"font-weight: 400;\">Ch\u1ec9 b\u00e1o \u0111\u1ed9 l\u1ec7ch chu\u1ea9n (Standard deviation indicator)<\/span><\/li>\n<\/ul>\n<h3><b>H\u1ea1n ch\u1ebf c\u1ee7a Bollinger Bands l\u00e0 g\u00ec?<\/b><\/h3>\n<ul>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Kh\u00f4ng d\u1ef1 \u0111o\u00e1n \u0111\u01b0\u1ee3c xu h\u01b0\u1edbng: <\/b><span style=\"font-weight: 400;\">Bollinger Bands ch\u1ec9 \u0111o bi\u1ebfn \u0111\u1ed9ng, kh\u00f4ng cho bi\u1ebft ch\u1eafc ch\u1eafn gi\u00e1 s\u1ebd \u0111i l\u00ean hay \u0111i xu\u1ed1ng.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Nhi\u1ec1u t\u00edn hi\u1ec7u nhi\u1ec5u khi th\u1ecb tr\u01b0\u1eddng \u0111i ngang m\u1ea1nh: <\/b><span style=\"font-weight: 400;\">Gi\u00e1 c\u00f3 th\u1ec3 li\u00ean t\u1ee5c ch\u1ea1m d\u1ea3i tr\u00ean\/d\u01b0\u1edbi khi\u1ebfn trader v\u00e0o l\u1ec7nh sai.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>D\u1ec5 hi\u1ec3u nh\u1ea7m v\u00f9ng \u201cqu\u00e1 mua\/qu\u00e1 b\u00e1n\u201d: <\/b><span style=\"font-weight: 400;\">Gi\u00e1 ch\u1ea1m d\u1ea3i tr\u00ean kh\u00f4ng ngh\u0129a l\u00e0 ph\u1ea3i gi\u1ea3m; trong xu h\u01b0\u1edbng m\u1ea1nh gi\u00e1 c\u00f3 th\u1ec3 b\u00e1m d\u1ea3i r\u1ea5t l\u00e2u.<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>C\u1ea7n k\u1ebft h\u1ee3p ch\u1ec9 b\u00e1o kh\u00e1c: <\/b><span style=\"font-weight: 400;\">D\u00f9ng m\u1ed9t m\u00ecnh Bollinger Bands c\u00f3 \u0111\u1ed9 ch\u00ednh x\u00e1c th\u1ea5p; th\u01b0\u1eddng ph\u1ea3i d\u00f9ng th\u00eam RSI, MACD, volume\u2026<\/span><\/li>\n<li style=\"font-weight: 400;\" aria-level=\"1\"><b>Thi\u1ebft l\u1eadp kh\u00f4ng ph\u00f9 h\u1ee3p s\u1ebd d\u1eabn \u0111\u1ebfn ph\u00e2n t\u00edch sai: <\/b><span style=\"font-weight: 400;\">Thay \u0111\u1ed5i SMA ho\u1eb7c \u0111\u1ed9 l\u1ec7ch chu\u1ea9n kh\u00f4ng h\u1ee3p l\u00fd c\u00f3 th\u1ec3 l\u00e0m t\u00edn hi\u1ec7u l\u1ec7ch.<\/span><\/li>\n<\/ul>\n<h3><b>\u0110\u00e2u l\u00e0 c\u00e1ch tr\u00e1nh t\u00edn hi\u1ec7u nhi\u1ec5u t\u1eeb Bollinger Bands?<\/b><\/h3>\n<ol>\n<li><b>K\u1ebft h\u1ee3p th\u00eam ch\u1ec9 b\u00e1o kh\u00e1c: <\/b><span style=\"font-weight: 400;\">D\u00f9ng RSI, MACD ho\u1eb7c Volume \u0111\u1ec3 x\u00e1c nh\u1eadn xu h\u01b0\u1edbng &#8211; tr\u00e1nh giao d\u1ecbch ch\u1ec9 v\u00ec gi\u00e1 ch\u1ea1m d\u1ea3i.<\/span><\/li>\n<li><b>X\u00e1c \u0111\u1ecbnh th\u1ecb tr\u01b0\u1eddng \u0111ang trend hay \u0111i ngang:\u00a0<\/b>\n<ul>\n<li><span style=\"font-weight: 400;\">Trong <\/span><b>sideways<\/b><span style=\"font-weight: 400;\">, t\u00edn hi\u1ec7u b\u1eadt l\u1ea1i (bounce) \u0111\u00e1ng tin h\u01a1n.<\/span><\/li>\n<li><span style=\"font-weight: 400;\">Trong <\/span><b>trend m\u1ea1nh<\/b><span style=\"font-weight: 400;\">, gi\u00e1 c\u00f3 th\u1ec3 b\u00e1m d\u1ea3i tr\u00ean\/d\u01b0\u1edbi \u2192 kh\u00f4ng n\u00ean v\u00e0o l\u1ec7nh ng\u01b0\u1ee3c xu h\u01b0\u1edbng.<\/span><\/li>\n<\/ul>\n<\/li>\n<li><b>Ch\u1edd bi\u1ec3u \u0111\u1ed3 n\u1ebfn x\u00e1c nh\u1eadn: <\/b><span style=\"font-weight: 400;\">Kh\u00f4ng v\u00e0o l\u1ec7nh ngay khi gi\u00e1 ch\u1ea1m d\u1ea3i. H\u00e3y \u0111\u1ee3i n\u1ebfn \u0111\u1ea3o chi\u1ec1u\/pha\u0301 v\u01a1\u0303 r\u00f5 r\u00e0ng.<\/span><\/li>\n<li><b>Quan s\u00e1t \u0111\u1ed9 r\u1ed9ng c\u1ee7a d\u1ea3i:\u00a0<\/b>\n<ul>\n<li><b>D\u1ea3i h\u1eb9p<\/b><span style=\"font-weight: 400;\"> \u2192 d\u1ec5 c\u00f3 ph\u00e1 v\u1ee1 gi\u1ea3 (fake breakout).<\/span><\/li>\n<li><b>D\u1ea3i m\u1edf r\u1ed9ng<\/b><span style=\"font-weight: 400;\"> \u2192 th\u1ecb tr\u01b0\u1eddng bi\u1ebfn \u0111\u1ed9ng m\u1ea1nh, t\u00edn hi\u1ec7u \u0111\u00e1ng tin h\u01a1n.<\/span><\/li>\n<\/ul>\n<\/li>\n<li><b>Tr\u00e1nh giao d\u1ecbch khi th\u1ecb tr\u01b0\u1eddng nhi\u1ec5u: <\/b><span style=\"font-weight: 400;\">Tin t\u1ee9c l\u1edbn, thanh kho\u1ea3n th\u1ea5p ho\u1eb7c bi\u1ebfn \u0111\u1ed9ng ng\u1eabu nhi\u00ean d\u1ec5 l\u00e0m gi\u00e1 v\u01b0\u1ee3t d\u1ea3i m\u1ed9t c\u00e1ch \u201c\u1ea3o\u201d.<\/span><\/li>\n<\/ol>\n<h2><b>K\u1ebft lu\u1eadn<\/b><\/h2>\n<p><span style=\"font-weight: 400;\">B\u1eb1ng c\u00e1ch k\u1ebft h\u1ee3p Bollinger Bands v\u1edbi c\u00e1c ch\u1ec9 b\u00e1o kh\u00e1c nh\u01b0 RSI ho\u1eb7c MACD v\u00e0 \u0111i\u1ec1u ch\u1ec9nh c\u00e1c thi\u1ebft l\u1eadp ph\u00f9 h\u1ee3p, b\u1ea1n c\u00f3 th\u1ec3 t\u0103ng c\u01b0\u1eddng hi\u1ec7u qu\u1ea3 giao d\u1ecbch v\u00e0 qu\u1ea3n l\u00fd r\u1ee7i ro t\u1ed1t h\u01a1n. Vi\u1ec7c hi\u1ec3u r\u00f5 &#8220;<\/span><b>Bollinger Bands l\u00e0 g\u00ec&#8221;<\/b><span style=\"font-weight: 400;\"> v\u00e0 \u1ee9ng d\u1ee5ng \u0111\u00fang c\u00e1ch s\u1ebd mang l\u1ea1i l\u1ee3i th\u1ebf trong vi\u1ec7c \u0111\u01b0a ra quy\u1ebft \u0111\u1ecbnh giao d\u1ecbch ch\u00ednh x\u00e1c v\u00e0 t\u1ed1i \u01b0u h\u00f3a l\u1ee3i nhu\u1eadn.<\/span><\/p>\n<p style=\"text-align: right;\"><b>Ngu\u1ed3n: <\/b><a href=\"https:\/\/www.investopedia.com\/terms\/b\/bollingerbands.asp#toc-how-reliable-are-bollinger-bands\" target=\"_blank\" rel=\"noopener\"><b>Investopedia<\/b><\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u0110\u01b0\u1ee3c ph\u00e1t tri\u1ec3n b\u1edfi John Bollinger v\u00e0o nh\u1eefng n\u0103m 1980, Bollinger Bands gi\u00fap c\u00e1c nh\u00e0 giao d\u1ecbch x\u00e1c \u0111\u1ecbnh c\u00e1c xu h\u01b0\u1edbng ti\u1ec1m n\u0103ng v\u00e0 d\u1ef1 \u0111o\u00e1n c\u00e1c \u0111i\u1ec3m \u0111\u1ea3o chi\u1ec1u. T\u1eeb \u0111\u00f3 ch\u1ecdn \u0111\u00fang th\u1eddi \u0111i\u1ec3m \u0111\u1ec3 \u0111\u01b0a ra quy\u1ebft \u0111\u1ecbnh \u0111\u1ea7u t\u01b0 s\u00e1ng su\u1ed1t. V\u1eady Bollinger Bands l\u00e0 g\u00ec? L\u00e0m sao \u0111\u1ec3 s\u1eed [&hellip;]<\/p>\n","protected":false},"author":5,"featured_media":3945,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[143],"tags":[120,149],"class_list":["post-1324","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-advanced-guide","tag-ta","tag-trading"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.6 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Bollinger Bands l\u00e0 g\u00ec? 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