{"id":5077,"date":"2020-12-13T12:00:07","date_gmt":"2020-12-13T05:00:07","guid":{"rendered":"https:\/\/www.fiahub.com\/blog\/?p=5077"},"modified":"2025-03-12T15:32:58","modified_gmt":"2025-03-12T08:32:58","slug":"bollinger-bands-la-gi-cach-su-dung-bollinger-bands","status":"publish","type":"post","link":"https:\/\/www.fiahub.com\/blog\/bollinger-bands-la-gi-cach-su-dung-bollinger-bands\/","title":{"rendered":"Bollinger bands l\u00e0 g\u00ec? C\u00e1ch s\u1eed d\u1ee5ng Bollinger bands"},"content":{"rendered":"\r\n<p>Bollinger bands l\u00e0 m\u1ed9t ch\u1ec9 b\u00e1o k\u1ef9 thu\u1eadt \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh d\u1ef1a tr\u00ean \u0111\u01b0\u1eddng MA c\u01a1 b\u1ea3n. Th\u00f4ng qua ch\u1ec9 b\u00e1o n\u00e0y, nh\u00e0 \u0111\u1ea7u t\u01b0 c\u00f3 th\u1ec3 x\u00e1c \u0111\u1ecbnh \u0111\u01b0\u1ee3c c\u00e1c bi\u1ebfn \u0111\u1ed9ng c\u1ee7a th\u1ecb tr\u01b0\u1eddng \u0111\u1ec3 c\u00f3 b\u01b0\u1edbc \u0111i ph\u00f9 h\u1ee3p trong giao d\u1ecbch c\u1ee7a m\u00ecnh. B\u00e0i vi\u1ebft n\u00e0y, ch\u00fang ta s\u1ebd c\u00f9ng t\u00ecm hi\u1ec3u k\u1ef9 h\u01a1n v\u1ec1 ch\u1ec9 b\u00e1o Bollinger bands n\u00e0y nh\u00e9.<\/p>\r\n\r\n\r\n\r\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_79_2 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\"><p class=\"ez-toc-title\" style=\"cursor:inherit\">N\u1ed9i dung b\u00e0i vi\u1ebft<\/p>\n<\/div><nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/www.fiahub.com\/blog\/bollinger-bands-la-gi-cach-su-dung-bollinger-bands\/#Nhung_thong_tin_tong_quan_ve_chi_bao_Bollinger_bands\" >Nh\u1eefng th\u00f4ng tin t\u1ed5ng quan v\u1ec1 ch\u1ec9 b\u00e1o Bollinger bands<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/www.fiahub.com\/blog\/bollinger-bands-la-gi-cach-su-dung-bollinger-bands\/#Khai_niem\" >Kh\u00e1i ni\u1ec7m<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/www.fiahub.com\/blog\/bollinger-bands-la-gi-cach-su-dung-bollinger-bands\/#Y_nghia\" >\u00dd ngh\u0129a<\/a><ul class='ez-toc-list-level-4' ><li class='ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/www.fiahub.com\/blog\/bollinger-bands-la-gi-cach-su-dung-bollinger-bands\/#1_Dai_Bollinger_bands_tro_nen_gan_nhau_hon\" >#1. D\u1ea3i Bollinger bands tr\u1edf n\u00ean g\u1ea7n nhau h\u01a1n<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/www.fiahub.com\/blog\/bollinger-bands-la-gi-cach-su-dung-bollinger-bands\/#2_Dai_Bollinger_bands_tro_nen_xa_nhau_hon\" >#2. D\u1ea3i Bollinger bands tr\u1edf n\u00ean xa nhau h\u01a1n<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-4'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/www.fiahub.com\/blog\/bollinger-bands-la-gi-cach-su-dung-bollinger-bands\/#3_But_pha\" >#3. B\u1ee9t ph\u00e1<\/a><\/li><\/ul><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/www.fiahub.com\/blog\/bollinger-bands-la-gi-cach-su-dung-bollinger-bands\/#Cach_tinh_toan_Bollinger_bands\" >C\u00e1ch t\u00ednh to\u00e1n Bollinger bands<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-8\" href=\"https:\/\/www.fiahub.com\/blog\/bollinger-bands-la-gi-cach-su-dung-bollinger-bands\/#Cac_kich_ban_su_dung_voi_Bollinger_bands\" >C\u00e1c k\u1ecbch b\u1ea3n s\u1eed d\u1ee5ng v\u1edbi Bollinger bands<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-9\" href=\"https:\/\/www.fiahub.com\/blog\/bollinger-bands-la-gi-cach-su-dung-bollinger-bands\/#Giao_dich_trong_pham_vi_cac_dai_Bollinger_bands\" >Giao d\u1ecbch trong ph\u1ea1m vi c\u00e1c d\u1ea3i Bollinger bands<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-10\" href=\"https:\/\/www.fiahub.com\/blog\/bollinger-bands-la-gi-cach-su-dung-bollinger-bands\/#Giao_dich_tai_diem_nut_that\" >Giao d\u1ecbch t\u1ea1i \u0111i\u1ec3m n\u00fat th\u1eaft<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-11\" href=\"https:\/\/www.fiahub.com\/blog\/bollinger-bands-la-gi-cach-su-dung-bollinger-bands\/#Ket_luan\" >K\u1ebft lu\u1eadn<\/a><\/li><\/ul><\/nav><\/div>\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Nhung_thong_tin_tong_quan_ve_chi_bao_Bollinger_bands\"><\/span><strong>Nh\u1eefng th\u00f4ng tin t\u1ed5ng quan v\u1ec1 ch\u1ec9 b\u00e1o Bollinger bands<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\r\n\r\n\r\n\r\n<p>Ch\u1ec9 b\u00e1o Bollinger bands hay c\u00f2n g\u1ecdi l\u00e0 d\u1ea3i Bollinger bands (vi\u1ebft t\u1eaft l\u00e0 BB) gi\u00fap v\u1ebd ra m\u1ed9t v\u00f9ng bi\u1ebfn \u0111\u1ed9ng c\u1ee7a gi\u00e1 tr\u00ean th\u1ecb tr\u01b0\u1eddng. Qua \u0111\u00f3, nh\u00e0 \u0111\u1ea7u t\u01b0 (N\u0110T) c\u00f3 th\u1ec3 s\u1eed d\u1ee5ng n\u00f3 \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh s\u1ef1 \u0111\u1ed5i chi\u1ec1u c\u1ee7a xu h\u01b0\u1edbng, \u0111i\u1ec3m h\u1ed7 tr\u1ee3 v\u00e0 kh\u00e1ng c\u1ef1 \u0111\u1ed9ng,&#8230; \u0111\u1ec3 t\u00ecm \u0111i\u1ec3m ra v\u00e0o l\u1ec7nh. H\u00e3y c\u00f9ng t\u00ecm hi\u1ec3u k\u1ef9 h\u01a1n v\u1ec1 ch\u1ec9 b\u00e1o n\u00e0y trong c\u00e1c ph\u1ea7n d\u01b0\u1edbi \u0111\u00e2y nh\u00e9.<\/p>\r\n\r\n\r\n\r\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Khai_niem\"><\/span><strong>Kh\u00e1i ni\u1ec7m<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\r\n\r\n\r\n\r\n<p>Bollinger bands l\u00e0 ch\u1ec9 b\u00e1o k\u1ef9 thu\u1eadt \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng nhi\u1ec1u trong ph\u00e2n t\u00edch k\u1ef9 thu\u1eadt. M\u1ed9t ch\u1ec9 b\u00e1o Bollinger bands th\u01b0\u1eddng \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh b\u1edfi ba \u0111\u01b0\u1eddng (d\u1ea3i) ri\u00eang bi\u1ec7t kh\u00e1c nhau bao g\u1ed3m:<\/p>\r\n\r\n\r\n\r\n<ul class=\"wp-block-list\">\r\n<li>D\u1ea3i gi\u1eefa: L\u00e0 m\u1ed9t \u0111\u01b0\u1eddng trung b\u00ecnh \u0111\u1ed9ng (SMA).<\/li>\r\n<li>D\u1ea3i tr\u00ean: T\u01b0\u01a1ng \u1ee9ng v\u1edbi v\u00f9ng tr\u00ean g\u00eda.<\/li>\r\n<li>D\u1ea3i d\u01b0\u1edbi: T\u01b0\u01a1ng \u1ee9ng v\u1edbi v\u00f9ng d\u01b0\u1edbi gi\u00e1.<\/li>\r\n<\/ul>\r\n\r\n\r\n\r\n<p>C\u00e1c d\u1ea3i trong ch\u1ec9 b\u00e1o Bollinger bands n\u00e0y s\u1ebd t\u1ef1 \u0111\u1ed9ng \u0111i\u1ec1u ch\u1ec9nh m\u1edf r\u1ed9ng v\u00e0 c\u00e1ch xa nhau trong c\u00e1c th\u1eddi \u0111i\u1ec3m th\u1ecb tr\u01b0\u1eddng bi\u1ebfn \u0111\u1ed9ng l\u1edbn. Ng\u01b0\u1ee3c l\u1ea1i, n\u00f3 s\u1ebd x\u00edch l\u1ea1i g\u1ea7n nhau khi r\u01a1i v\u00e0o v\u00f9ng gi\u00e1 \u00edt bi\u1ebfn \u0111\u1ed9ng ho\u1eb7c sideway.<\/p>\r\n\r\n\r\n\r\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Y_nghia\"><\/span><strong>\u00dd ngh\u0129a<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\r\n\r\n\r\n\r\n<p>D\u1ef1a v\u00e0o kh\u00e1i ni\u1ec7m \u1edf b\u00ean tr\u00ean, ch\u00fang ta s\u1ebd nh\u1eadn th\u1ea5y Bollinger bands c\u00f3 m\u1ed9t s\u1ed1 \u00fd ngh\u0129a sau \u0111\u00e2y:<\/p>\r\n\r\n\r\n\r\n<h4 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"1_Dai_Bollinger_bands_tro_nen_gan_nhau_hon\"><\/span><strong>#1. D\u1ea3i Bollinger bands tr\u1edf n\u00ean g\u1ea7n nhau h\u01a1n<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h4>\r\n\r\n\r\n\r\n<p>\u0110\u00e2y l\u00e0 d\u1ea5u hi\u1ec7u cho th\u1ea5y th\u1ecb tr\u01b0\u1eddng g\u1ea7n nh\u01b0 kh\u00f4ng c\u00f3 nhi\u1ec1u bi\u1ebfn \u0111\u1ed9ng (hay n\u00f3i c\u00e1ch kh\u00e1c l\u00e0 s\u1ef1 bi\u1ebfn \u0111\u1ed9ng theo chi\u1ec1u h\u01b0\u1edbng \u0111i ngang &#8211; sideway). Minh ch\u1ee9ng cho \u0111i\u1ec1u n\u00e0y l\u00e0 vi\u1ec7c 3 d\u1ea3i trong Bollinger bands c\u00f3 xu h\u01b0\u1edbng x\u00edch l\u1ea1i g\u1ea7n nhau h\u01a1n v\u00e0 t\u1ea1o th\u00e0nh m\u1ed9t n\u00fat th\u1eaft c\u1ed5 chai (xem h\u00ecnh d\u01b0\u1edbi \u0111\u00e2y).<\/p>\r\n\r\n\r\n\r\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/lh4.googleusercontent.com\/EFZW9BURzljdyntoPf7KROSRM_etrgAscBiMDMX6QCzJQ1LqPZzBOLsj7N9bECHb5xpAMPqAaT1rUhX63oEx-kgTIDovTbs2RwOcHQQbBlgBTx_cMH5dWApWvljJ2jy42TYUDHm5\" alt=\" D\u1ea3i Bollinger bands\" \/><\/figure>\r\n\r\n\r\n\r\n<p><em>D\u1ea3i Bollinger bands trong th\u1eddi \u0111i\u1ec3m th\u1ecb tr\u01b0\u1eddng \u00edt bi\u1ebfn \u0111\u1ed9ng.<\/em><\/p>\r\n\r\n\r\n\r\n<p>Th\u00f4ng th\u01b0\u1eddng, n\u1ebfu nh\u01b0 c\u00e1c d\u1ea3i Bollinger bands duy tr\u00ec tr\u1ea1ng th\u00e1i n\u00e0y trong m\u1ed9t kho\u1ea3ng th\u1eddi gian th\u00ec \u0111\u00e2y c\u00f3 th\u1ec3 l\u00e0 m\u1ed9t t\u00edn hi\u1ec7u m\u1eebng cho m\u1ed9t \u0111\u1ee3t b\u1ee9t ph\u00e1t v\u1ec1 gi\u00e1 trong th\u1eddi gian t\u1edbi. Qua \u0111\u00f3, n\u00f3 c\u00f3 th\u1ec3 xu\u1ea5t hi\u1ec7n c\u01a1 h\u1ed9i giao d\u1ecbch cho c\u00e1c N\u0110T.<\/p>\r\n\r\n\r\n\r\n<h4 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"2_Dai_Bollinger_bands_tro_nen_xa_nhau_hon\"><\/span><strong>#2. D\u1ea3i Bollinger bands tr\u1edf n\u00ean xa nhau h\u01a1n<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h4>\r\n\r\n\r\n\r\n<p>Ng\u01b0\u1ee3c l\u1ea1i v\u1edbi tr\u01b0\u1eddng h\u1ee3p tr\u00ean, khi c\u00e1c d\u1ea3i Bollinger bands c\u00f3 xu h\u01b0\u1edbng c\u00e1ch xa nhau th\u00ec \u0111\u00e2y l\u00e0 m\u1ed9t d\u1ea5u hi\u1ec7u c\u1ee7a m\u1ed9t th\u1ecb tr\u01b0\u1eddng \u0111ang c\u00f3 bi\u1ebfn \u0111\u1ed9ng m\u1ea1nh.\u00a0<\/p>\r\n\r\n\r\n\r\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/lh3.googleusercontent.com\/WyBe9_jg0KtBabFCu19H2z-ftZ4b_CweVR09p8WDMafBPRL9QJbrbdpvrncAIpWjfVdRy4FEqpNmdYNiBGHHgljNnonH75IBF5ZJTDmqB92A6RmdKXpmD3CTfggTanb7Ndmelw4U\" alt=\" D\u1ea3i Bollinger bands\" \/><\/figure>\r\n\r\n\r\n\r\n<p><em>D\u1ea3i Bollinger bands c\u00e1ch xa nhau khi th\u1ecb tr\u01b0\u1eddng c\u00f3 bi\u1ebfn \u0111\u1ed9ng m\u1ea1nh.<\/em><\/p>\r\n\r\n\r\n\r\n<p>Nh\u01b0 v\u00ed d\u1ee5 tr\u00ean \u0111\u00e2y, v\u00e0o th\u1eddi \u0111i\u1ec3m th\u00e1ng 3\/2020, gi\u00e1 \u0111\u1ed3ng BTC c\u00f3 m\u1ed9 s\u1ef1 bi\u1ebfn \u0111\u1ed9ng m\u1ea1nh d\u1eabn \u0111\u1ebfn c\u00e1c d\u1ea3i c\u00e1ch xa nhau. \u0110\u00e2y s\u1ebd l\u00e0 th\u1eddi \u0111i\u1ec3m \u0111\u1ec3 c\u00e1c N\u0110T tho\u00e1t v\u1ecb th\u1ebf.<\/p>\r\n\r\n\r\n\r\n<h4 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"3_But_pha\"><\/span><strong>#3. B\u1ee9t ph\u00e1<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h4>\r\n\r\n\r\n\r\n<p>B\u1ee9t ph\u00e1 l\u00e0 t\u00edn hi\u1ec7u cho th\u1ea5y bi\u1ec3u \u0111\u1ed3 gi\u00e1 \u201c\u0111\u00e2m th\u1ee7ng\u201d d\u1ea3i tr\u00ean ho\u1eb7c d\u1ea3i d\u01b0\u1edbi. Th\u00f4ng th\u01b0\u1eddng, t\u1ea1i nh\u1eefng th\u1eddi \u0111i\u1ec3m nh\u01b0 v\u1eady s\u1ebd xu\u1ea5t hi\u1ec7n m\u1ed9t s\u1ed1 bi\u1ebfn c\u1ed1.\u00a0<\/p>\r\n\r\n\r\n\r\n<p><strong>L\u01b0u \u00fd:<\/strong><\/p>\r\n\r\n\r\n\r\n<ul class=\"wp-block-list\">\r\n<li>N\u1ebfu ch\u00fang ta th\u01b0\u1eddng xuy\u00ean quan s\u00e1t ch\u1ec9 s\u1ed1 BB th\u00ec s\u1ebd th\u1ea5y s\u1ef1 giao thoa gi\u1eefa c\u00e1c t\u00edn hi\u1ec7u v\u1edbi nhau. C\u00e1c d\u1ea3i Bollinger bands c\u00f3 th\u1ec3 m\u1edf r\u1ed9ng h\u01a1n sau m\u1ed9t giai \u0111o\u1ea1n thu h\u1eb9p nh\u1ea5t \u0111\u1ecbnh. Tuy nhi\u00ean, nh\u1eefng t\u00edn hi\u1ec7u \u0111\u00f3 l\u1ea1i kh\u00f4ng ho\u00e0n to\u00e0n l\u00e0 m\u1ed9t t\u00edn hi\u1ec7u giao d\u1ecbch t\u1ed1t. B\u1edfi l\u1ebd, t\u1ea1i th\u1eddi \u0111i\u1ec3m giao thoa \u0111\u00f3, Bollinger bands kh\u00f4ng c\u00f3 t\u00edn hi\u1ec7u n\u00e0o cho bi\u1ebft gi\u00e1 s\u1ebd bi\u1ebfn \u0111\u1ed9ng t\u0103ng ho\u1eb7c gi\u1ea3m. Do \u0111\u00f3, n\u1ebfu N\u0110T ch\u1ec9 d\u1ef1a v\u00e0o ch\u1ec9 b\u00e1o n\u00e0y th\u00ec s\u1ebd kh\u00f3 \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh \u0111\u01b0\u1ee3c xu h\u01b0\u1edbng ti\u1ebfp theo c\u1ee7a th\u1ecb tr\u01b0\u1eddng.<\/li>\r\n<li>T\u01b0\u01a1ng t\u1ef1 nh\u01b0 v\u1eady, s\u1ef1 b\u1ee9t ph\u00e1 trong t\u00edn hi\u1ec7u Bollinger bands c\u0169ng kh\u00f4ng r\u00f5 r\u00e0ng cho m\u1ed9t t\u00edn hi\u1ec7u mua v\u00e0o hay b\u00e1n ra. N\u00f3 ch\u1ec9 d\u1ef1 b\u00e1o c\u00f3 th\u1ec3 x\u1ea3y ra m\u1ed9t bi\u1ebfn \u0111\u1ed9ng l\u1edbn trong th\u1eddi gian s\u1eafp t\u1edbi m\u00e0 th\u00f4i. C\u00f2n bi\u1ebfn \u0111\u1ed9ng \u0111\u00f3 l\u00e0 t\u0103ng hay gi\u1ea3m th\u00ec b\u1ea3n th\u00e2n BB kh\u00f4ng th\u1ec3 hi\u1ec7n r\u00f5 \u0111\u01b0\u1ee3c \u0111i\u1ec1u n\u00e0y.<\/li>\r\n<\/ul>\r\n\r\n\r\n\r\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Cach_tinh_toan_Bollinger_bands\"><\/span><strong>C\u00e1ch t\u00ednh to\u00e1n Bollinger bands<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\r\n\r\n\r\n\r\n<p>Quay l\u1ea1i ph\u1ea7n kh\u00e1i ni\u1ec7m \u1edf tr\u00ean, ch\u00fang ta th\u1ea5y r\u1eb1ng ch\u1ec9 b\u00e1o Bollinger bands \u0111\u01b0\u1ee3c c\u1ea5u th\u00e0nh t\u1eeb 3 d\u1ea3i kh\u00e1c nhau. Trong \u0111\u00f3, d\u1ea3i c\u01a1 b\u1ea3n \u1edf gi\u1eefa l\u00e0 m\u1ed9t \u0111\u01b0\u1eddng MA (Moving everage). Tu\u1ef3 v\u00e0o t\u1eebng tr\u01b0\u1eddng h\u1ee3p m\u00e0 ch\u00fang ta c\u00f3 th\u1ec3 l\u1ef1a ch\u1ecdn \u0111\u01b0\u1eddng MA n\u00e0y theo c\u00e1c ph\u00e2n k\u1ef3 kh\u00e1c nhau. Ta c\u00f3 m\u1ed9t c\u00f4ng th\u1ee9c chung \u0111\u1ec3 t\u00ednh to\u00e1n ch\u1ec9 b\u00e1o Bollinger bands nh\u01b0 sau:<\/p>\r\n\r\n\r\n\r\n<ul class=\"wp-block-list\">\r\n<li>D\u1ea3i gi\u1eefa: L\u00e0 <a href=\"https:\/\/www.fiahub.com\/blog\/duong-trung-binh-dong-ma-la-gi\/\" target=\"_blank\" rel=\"noopener\">\u0111\u01b0\u1eddng MA<\/a> theo ph\u00e2n k\u1ef3 kh\u00e1c nhau (th\u01b0\u1eddng s\u1ebd l\u00e0 20).<\/li>\r\n<li>D\u1ea3i tr\u00ean: B\u1eb1ng d\u1ea3i gi\u1eefa + \u0110\u1ed9 l\u1ec7ch chu\u1ea9n.<\/li>\r\n<li>D\u1ea3i d\u01b0\u1edbi: B\u1eb1ng d\u1ea3i gi\u1eefa &#8211; \u0110\u1ed9 l\u1ec7ch chu\u1ea9n.<\/li>\r\n<\/ul>\r\n\r\n\r\n\r\n<p>\u1ede \u0111\u00e2y c\u00f3 kh\u00e1i ni\u1ec7m \u0111\u1ed9 l\u1ec7ch chu\u1ea9n m\u00e0 b\u1ea1n s\u1ebd th\u1ea5y kh\u00e1 l\u1ea1 l\u1eabm. H\u00e3y hi\u1ec3u \u0111\u01a1n gi\u1ea3n \u0111\u00e2y l\u00e0 m\u1ed9t <strong>kho\u1ea3ng ch\u00eanh l\u1ec7ch<\/strong> v\u1ec1 gi\u00e1 tr\u1ecb t\u1ea1i t\u1eebng th\u1eddi \u0111i\u1ec3m so v\u1edbi gi\u00e1 trung b\u00ecnh c\u1ee7a \u0111\u1ed3ng coin \u0111\u00f3. Nh\u01b0 v\u1eady, \u0111i\u1ec1u n\u00e0y c\u0169ng \u0111\u1ed3ng ngh\u0129a v\u1edbi vi\u1ec7c \u0111\u1ed9 l\u1ec7ch chu\u1ea9n n\u00e0y s\u1ebd kh\u00f4ng ph\u1ea3i l\u00e0 m\u1ed9t con s\u1ed1 c\u1ed1 \u0111\u1ecbnh. N\u00f3 s\u1ebd bi\u1ebfn thi\u00ean d\u1ef1a v\u00e0o m\u1ee9c gi\u00e1 trung b\u00ecnh c\u1ee7a \u0111\u1ed3ng coin \u0111\u00f3.<\/p>\r\n\r\n\r\n\r\n<p>Th\u00f4ng th\u01b0\u1eddng, n\u1ebfu ch\u00fang ta l\u1ef1a ch\u1ecdn \u0111\u01b0\u1eddng MA theo ph\u00e2n k\u1ef3 20, \u0111\u1ed9 l\u1ec7ch chu\u1ea9n th\u01b0\u1eddng s\u1ebd \u0111\u01b0\u1ee3c t\u00ednh l\u00e0 2. N\u1ebfu ph\u00e2n k\u1ef3 l\u00e0 50, \u0111\u1ed9 l\u1ec7ch chu\u1ea9n s\u1ebd l\u00e0 2.5. N\u1ebfu ph\u00e2n k\u1ef3 l\u00e0 10, \u0111\u1ed9 l\u1ec7ch chu\u1ea9n l\u00e0 1.5,&#8230;\u00a0<\/p>\r\n\r\n\r\n\r\n<p><strong>L\u01b0u \u00fd:<\/strong> C\u00f3 v\u1ebb b\u1ea1n s\u1ebd th\u1ea5y n\u00f3 kh\u00e1 ph\u1ee9c t\u1ea1p \u0111\u1ec3 nh\u1edb \u0111\u00fang kh\u00f4ng? \u0110\u1eebng lo, may m\u1eafn l\u00e0 ch\u1ec9 b\u00e1o Bollinger bands n\u00e0y \u0111\u1ec1u \u0111\u01b0\u1ee3c t\u00ednh to\u00e1n t\u1ef1 \u0111\u1ed9ng v\u00e0 \u0111\u01b0a th\u00e0nh c\u00e1c ch\u1ec9 b\u00e1o \u0111\u1ecbnh s\u1eb5n trong c\u00e1c c\u00f4ng c\u1ee5 ph\u00e2n t\u00edch k\u1ef9 thu\u1eadt r\u1ed3i. Ch\u00fang ta s\u1ebd kh\u00f4ng c\u1ea7n thi\u1ebft ph\u1ea3i t\u00ednh to\u00e1n th\u1ee7 c\u00f4ng n\u1eefa. Vi\u1ec7c t\u00ednh to\u00e1n th\u1ee7 c\u00f4ng n\u00e0y ch\u1ec9 nh\u1eb1m m\u1ee5c \u0111\u00edch gi\u00fap c\u00e1c b\u1ea1n hi\u1ec3u \u0111\u01b0\u1ee3c c\u00e1ch th\u1ee9c v\u1eadn h\u00e0nh c\u1ee7a ch\u1ec9 b\u00e1o n\u00e0y m\u00e0 th\u00f4i.<\/p>\r\n\r\n\r\n\r\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Cac_kich_ban_su_dung_voi_Bollinger_bands\"><\/span><strong>C\u00e1c k\u1ecbch b\u1ea3n s\u1eed d\u1ee5ng v\u1edbi Bollinger bands<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\r\n\r\n\r\n\r\n<p>Vi\u1ec7c s\u1eed d\u1ee5ng Bollinger bands v\u00e0o trong ph\u00e2n t\u00edch k\u1ef9 thu\u1eadt c\u00f3 th\u1ec3 \u00e1p d\u1ee5ng v\u1edbi m\u1ed9t s\u1ed1 d\u1ea1ng k\u1ecbch b\u1ea3n nh\u01b0 d\u01b0\u1edbi \u0111\u00e2y.<\/p>\r\n\r\n\r\n\r\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Giao_dich_trong_pham_vi_cac_dai_Bollinger_bands\"><\/span><strong>Giao d\u1ecbch trong ph\u1ea1m vi c\u00e1c d\u1ea3i Bollinger bands<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\r\n\r\n\r\n\r\n<p>D\u1ea3i tr\u00ean v\u00e0 d\u1ea3i d\u01b0\u1edbi c\u1ee7a Bollinger bands c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c xem nh\u01b0 l\u00e0 ng\u01b0\u1ee1ng kh\u00e1ng c\u1ef1 v\u00e0 h\u1ed7 tr\u1ee3 \u0111\u1ed9ng t\u1ea1i th\u1eddi \u0111i\u1ec3m \u0111\u00f3. Tr\u01b0\u1eddng h\u1ee3p gi\u00e1 ch\u1ea1m v\u00e0o c\u00e1c v\u00f9ng h\u1ed7 tr\u1ee3 v\u00e0 kh\u00e1ng c\u1ef1 \u0111\u1ed9ng n\u00e0y, giao d\u1ecbch c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n.<\/p>\r\n\r\n\r\n\r\n<p>M\u1eb7c d\u00f9 n\u00f3 kh\u00f4ng ho\u00e0n to\u00e0n hi\u1ec7u qu\u1ea3 t\u1ea1i m\u1ecdi th\u1eddi \u0111i\u1ec3m do b\u1ea3n th\u00e2n BB kh\u00f4ng th\u1ec3 hi\u1ec7n r\u00f5 xu h\u01b0\u1edbng gi\u00e1. Tuy nhi\u00ean, trong nh\u1eefng th\u1eddi \u0111i\u1ec3m th\u1ecb tr\u01b0\u1eddng sideway th\u00ec t\u00edn hi\u1ec7u n\u00e0y c\u0169ng ph\u1ea7n n\u00e0o hi\u1ec7u qu\u1ea3. B\u00f9 l\u1ea1i, m\u1ee9c sinh l\u1ee3i trong nh\u1eefng th\u1eddi \u0111i\u1ec3m th\u1ecb tr\u01b0\u1eddng nh\u01b0 th\u1ebf n\u00e0y th\u01b0\u1eddng s\u1ebd l\u00e0 kh\u00f4ng cao.<\/p>\r\n\r\n\r\n\r\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Giao_dich_tai_diem_nut_that\"><\/span><strong>Giao d\u1ecbch t\u1ea1i \u0111i\u1ec3m n\u00fat th\u1eaft<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h3>\r\n\r\n\r\n\r\n<p>Sau m\u1ed9t chu\u1ed7i Bollinger bands sideway k\u00e9o d\u00e0i gi\u00e1 c\u00f3 th\u1ec3 b\u1ee9t ph\u00e1 t\u1ea1i c\u00e1c th\u1eddi \u0111i\u1ec3m bi\u1ec3u \u0111\u1ed3 gi\u00e1 c\u1eaft d\u1ea3i tr\u00ean ho\u1eb7c d\u1ea3i d\u01b0\u1edbi. M\u1eb7c d\u00f9 t\u00edn hi\u1ec7u n\u00e0y kh\u00f4ng cho bi\u1ebft ch\u00ednh x\u00e1c gi\u00e1 s\u1ebd bi\u1ebfn \u0111\u1ed9ng theo chi\u1ec1u h\u01b0\u1edbng t\u0103ng hay gi\u1ea3m, tuy nhi\u00ean th\u00f4ng th\u01b0\u1eddng t\u1ea1i \u0111\u00e2y s\u1ebd c\u00f3 m\u1ed9t bi\u1ebfn \u0111\u1ed9ng l\u1edbn. C\u00e1c N\u0110T c\u00f3 th\u1ec3 canh nh\u1eefng nh\u1ecbp \u0111i\u1ec1u ch\u1ec9nh l\u1ea1i sau c\u00e1c \u0111i\u1ec3m \u201c\u0111\u00e2m th\u1ee7ng\u201d n\u00e0y \u0111\u1ec3 m\u1edf ho\u1eb7c \u0111\u00f3ng v\u1ecb th\u1ebf hi\u1ec7n t\u1ea1i.<\/p>\r\n\r\n\r\n\r\n<figure class=\"wp-block-image\"><img decoding=\"async\" src=\"https:\/\/lh5.googleusercontent.com\/SmwAWcDrcMbyhNJ12ngVNOH70Dp90AoZ-ieAtYNiLHVcIr3rS1Bp31_UyhCEL5C9PkG1BpwadCD8xseK2Ev2Hz3Adv7RP3tpUdA0QojNtclNv1lSY5K0gEwYT1ODKffdv3Iz8J_K\" alt=\" D\u1ea3i Bollinger bands\" \/><\/figure>\r\n\r\n\r\n\r\n<p><em>Giao d\u1ecbch t\u1ea1i \u0111i\u1ec3m n\u00fat th\u1eaft trong tr\u01b0\u1eddng h\u1ee3p \u0111\u1ed3ng BTC v\u00e0o gi\u1eefa th\u00e1ng 7\/2020.<\/em><\/p>\r\n\r\n\r\n\r\n<p>H\u00ecnh tr\u00ean l\u00e0 bi\u1ec3u \u0111\u1ed3 giao d\u1ecbch \u0111\u1ed3ng BTC. Gi\u00e1 BTC \u0111\u00e3 c\u00f3 m\u1ed9t th\u1eddi \u0111i\u1ec3m \u0111\u1ee7 d\u00e0i trong giai \u0111o\u1ea1n sideway t\u1eeb th\u00e1ng 5\/2020. \u0110\u1ebfn gi\u1eefa th\u00e1ng 7\/2020, bi\u1ec3u \u0111\u1ed3 gi\u00e1 c\u00f3 d\u1ea5u hi\u1ec7u c\u1eaft d\u1ea3i tr\u00ean c\u1ee7a \u0111\u01b0\u1eddng Bollinger bands. Ngay sau \u0111\u00f3, \u0111\u1ed3ng BTC ch\u1ee9ng ki\u1ebfn m\u1ed9t m\u1ee9c t\u0103ng k\u1ef7 l\u1edbn v\u00e0 ti\u1ebfp t\u1ee5c duy tr\u00ec \u0111\u00e0 t\u0103ng \u0111\u00f3 \u0111\u1ec3 \u0111\u1ea1t \u0111\u01b0\u1ee3c k\u1ef3 t\u00edch m\u1edbi nh\u01b0 th\u1eddi \u0111i\u1ec3m hi\u1ec7n t\u1ea1i. \u1ede th\u1eddi \u0111i\u1ec3m m\u00ecnh vi\u1ebft b\u00e0i n\u00e0y, gi\u00e1 \u0111\u1ed3ng BTC \u0111\u1ec3 v\u01b0\u1ee3t m\u1ee9c ATH (All-high-time) trong l\u1ecbch s\u1eed n\u0103m 2017. Th\u1eddi \u0111i\u1ec3m cao nh\u1ea5t, 1 BTC c\u00f3 gi\u00e1 h\u01a1n $19,900.<\/p>\r\n\r\n\r\n\r\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Ket_luan\"><\/span><strong>K\u1ebft lu\u1eadn<\/strong><span class=\"ez-toc-section-end\"><\/span><\/h2>\r\n\r\n\r\n\r\n<p>Qua b\u00e0i vi\u1ebft n\u00e0y, ch\u00fang ta th\u1ea5y r\u1eb1ng, b\u1ea3n ch\u1ea5t c\u1ee7a Bollinger bands l\u00e0 cung c\u1ea5p m\u1ed9t kh\u00e1i ni\u1ec7m t\u01b0\u01a1ng \u0111\u1ed1i v\u1ec1 \u0111\u1ecbnh ngh\u0129a gi\u00e1 cao, gi\u00e1 th\u1ea5p v\u00e0 gi\u00e1 trung b\u00ecnh t\u1ea1i m\u1ed9t th\u1eddi \u0111i\u1ec3m giao d\u1ecbch. M\u1eb7c d\u00f9 n\u00f3 kh\u00f4ng \u0111\u00f3ng vai tr\u00f2 l\u00e0 m\u1ed9t ch\u1ec9 b\u00e1o gi\u00fap c\u00e1c N\u0110T x\u00e1c \u0111\u1ecbnh xu h\u01b0\u1edbng nh\u01b0ng trong m\u1ed9t s\u1ed1 tr\u01b0\u1eddng h\u1ee3p nh\u1ea5t \u0111\u1ecbnh, n\u00f3 c\u00f3 th\u1ec3 gi\u00fap x\u00e1c \u0111\u1ecbnh c\u00e1c \u0111i\u1ec3m ra\/v\u00e0o l\u1ec7nh ph\u00f9 h\u1ee3p.<\/p>\r\n\r\n\r\n\r\n<p>Tr\u00ean \u0111\u00e2y l\u00e0 m\u1ed9t s\u1ed1 th\u00f4ng tin c\u01a1 b\u1ea3n nh\u00e2t v\u1ec1 ch\u1ec9 b\u00e1o Bollinger bands. B\u1ea1n c\u00f3 th\u1ec3 v\u1eadn d\u1ee5ng n\u00f3 \u0111\u1ed1i v\u1edbi t\u1ea5t c\u1ea3 c\u00e1c ph\u00e2n t\u00edch k\u1ef9 thu\u1eadt cho th\u1ecb tr\u01b0\u1eddng t\u00e0i ch\u00ednh n\u00f3i chung v\u00e0 ti\u1ec1n \u0111i\u1ec7n t\u1eed n\u00f3i ri\u00eang. L\u01b0u \u00fd, m\u1ecdi t\u00edn hi\u1ec7u x\u1ea3y ra \u0111\u1ec1u ch\u1ec9 mang t\u00ednh t\u01b0\u01a1ng \u0111\u1ed1i. \u0110\u1ec3 \u0111\u01b0a ra quy\u1ebft \u0111\u1ecbnh ch\u00ednh x\u00e1c nh\u1ea5t, c\u00e1c N\u0110T n\u00ean k\u1ebft h\u1ee3p nhi\u1ec1u ch\u1ec9 s\u1ed1 kh\u00e1c nhau \u0111\u1ec3 gi\u1ea3m t\u1ed1i \u0111a \u0111\u1ed9 nhi\u1ec5u g\u1eb7p ph\u1ea3i c\u1ee7a t\u1eebng ch\u1ec9 s\u1ed1 nh\u1ea5t \u0111\u1ecbnh.<\/p>\r\n\r\n\r\n","protected":false},"excerpt":{"rendered":"<p>Bollinger bands l\u00e0 m\u1ed9t ch\u1ec9 b\u00e1o k\u1ef9 thu\u1eadt \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh d\u1ef1a tr\u00ean \u0111\u01b0\u1eddng MA c\u01a1 b\u1ea3n. Th\u00f4ng qua ch\u1ec9 b\u00e1o n\u00e0y, nh\u00e0 \u0111\u1ea7u t\u01b0 c\u00f3 th\u1ec3 x\u00e1c \u0111\u1ecbnh \u0111\u01b0\u1ee3c c\u00e1c bi\u1ebfn \u0111\u1ed9ng c\u1ee7a th\u1ecb tr\u01b0\u1eddng \u0111\u1ec3 c\u00f3 b\u01b0\u1edbc \u0111i ph\u00f9 h\u1ee3p trong giao d\u1ecbch c\u1ee7a m\u00ecnh. B\u00e0i vi\u1ebft n\u00e0y, ch\u00fang ta s\u1ebd c\u00f9ng t\u00ecm<\/p>\n","protected":false},"author":10,"featured_media":5078,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"elementor_theme","format":"standard","meta":{"footnotes":""},"categories":[21848],"tags":[10827,10825],"class_list":{"0":"post-5077","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-kien-thuc-ptkt","8":"tag-bollinger-bands","9":"tag-bollinger-bands-la-gi"},"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v25.0 (Yoast SEO v26.6) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Bollinger bands l\u00e0 g\u00ec? C\u00e1ch s\u1eed d\u1ee5ng Bollinger bands - Fiahub<\/title>\n<meta name=\"description\" content=\"Bollinger bands l\u00e0 m\u1ed9t ch\u1ec9 b\u00e1o k\u1ef9 thu\u1eadt \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh d\u1ef1a tr\u00ean \u0111\u01b0\u1eddng MA c\u01a1 b\u1ea3n. 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