{"id":322,"date":"2016-09-28T15:12:09","date_gmt":"2016-09-28T08:12:09","guid":{"rendered":"http:\/\/robostock.vn\/web\/?p=322"},"modified":"2016-09-28T15:12:09","modified_gmt":"2016-09-28T08:12:09","slug":"rsi-relative-strength-index","status":"publish","type":"post","link":"https:\/\/robostock.vn\/web\/rsi-relative-strength-index\/","title":{"rendered":"RSI (Relative Strength Index)"},"content":{"rendered":"
Ch\u1ec9 s\u1ed1 RSI gi\u1ea3i quy\u1ebft v\u1ea5n \u0111\u1ec1 c\u1ee7a nh\u1eefng d\u1ecbch chuy\u1ec3n b\u1ea5t th\u01b0\u1eddng v\u00e0 gi\u1ea3i quy\u1ebft nhu c\u1ea7u v\u1ec1 m\u1ed9t bi\u00ean \u0111\u1ed9 gi\u1edbi h\u1ea1n tr\u00ean v\u00e0 d\u01b0\u1edbi kh\u00f4ng \u0111\u1ed5i. Ch\u1ec9 s\u1ed1 RSI \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh theo c\u00f4ng th\u1ee9c sau: RSI = 100 – 100\/(1+RS) RS = Trung b\u00ecnh gi\u00e1 \u0111\u00f3ng c\u1eeda t\u0103ng c\u1ee7a x ng\u00e0y\/Trung b\u00ecnh gi\u00e1 \u0111\u00f3ng c\u1eeda gi\u1ea3m c\u1ee7a x ng\u00e0y…<\/div>\n

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Ch\u1ec9 s\u1ed1 RSI gi\u1ea3i quy\u1ebft v\u1ea5n \u0111\u1ec1 c\u1ee7a nh\u1eefng d\u1ecbch chuy\u1ec3n b\u1ea5t th\u01b0\u1eddng v\u00e0 gi\u1ea3i quy\u1ebft nhu c\u1ea7u v\u1ec1 m\u1ed9t bi\u00ean \u0111\u1ed9 gi\u1edbi h\u1ea1n tr\u00ean v\u00e0 d\u01b0\u1edbi kh\u00f4ng \u0111\u1ed5i. Ch\u1ec9 s\u1ed1 RSI \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh theo c\u00f4ng th\u1ee9c sau:<\/span><\/p>\n

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RSI = 100 – 100\/(1+RS)<\/p>\n

RS = Trung b\u00ecnh gi\u00e1 \u0111\u00f3ng c\u1eeda t\u0103ng c\u1ee7a x ng\u00e0y\/Trung b\u00ecnh gi\u00e1 \u0111\u00f3ng c\u1eeda gi\u1ea3m c\u1ee7a x ng\u00e0y<\/p>\n

S\u1ed1 ng\u00e0y \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong t\u00ednh to\u00e1n l\u00e0 14 ng\u00e0y theo \u0111\u1ed3 th\u1ecb h\u00e0ng ng\u00e0y; s\u1eed d\u1ee5ng \u0111\u1ed3 th\u1ecb tu\u1ea7n s\u1ed1 ng\u00e0y s\u1ebd l\u00e0 14 tu\u1ea7n. \u0110\u1ec3 x\u00e1c \u0111\u1ecbnh \u0111\u01b0\u1ee3c c\u00e1c gi\u00e1 tr\u1ecb trung b\u00ecnh \u0111i l\u00ean, ch\u00fang ta c\u1ed9ng t\u1ed5ng s\u1ed1 \u0111i\u1ec3m \u0111\u1ea1t \u0111\u01b0\u1ee3c trong c\u00e1c ng\u00e0y gi\u00e1 t\u0103ng trong 14 ng\u00e0y v\u00e0 chia t\u1ed5ng s\u1ed1 \u0111\u00f3 cho 14. \u0110\u1ec3 x\u00e1c \u0111\u1ecbnh gi\u00e1 tr\u1ecb trung b\u00ecnh \u0111i xu\u1ed1ng, ch\u00fang ta c\u1ed9ng t\u1ed5ng s\u1ed1 \u0111i\u1ec3m b\u1ecb m\u1ea5t trong 14 ng\u00e0y gi\u00e1 gi\u1ea3m v\u00e0 chia l\u1ea1i cho 14. Sau \u0111\u00f3 \u201cc\u01b0\u1eddng \u0111\u1ed9 t\u01b0\u01a1ng \u0111\u1ed1i – RS\u201d \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh b\u1eb1ng c\u00e1ch chia trung b\u00ecnh gi\u00e1 t\u0103ng cho trung b\u00ecnh gi\u00e1 gi\u1ea3m. Gi\u00e1 tr\u1ecb RS n\u00e0y sau \u0111\u00f3 \u0111\u01b0\u1ee3c \u0111\u01b0a v\u00e0o trong c\u00f4ng th\u1ee9c t\u00ednh RSI. S\u1ed1 l\u01b0\u1ee3ng ng\u00e0y c\u00f3 th\u1ec3 thay \u0111\u1ed5i b\u1eb1ng c\u00e1ch thay \u0111\u1ed5i gi\u00e1 tr\u1ecb c\u1ee7a x.<\/span><\/p>\n

V\u00ed d\u1ee5 minh h\u1ecda:<\/span><\/p>\n

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\u00a0 \"\"<\/a><\/span><\/div>\n
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\u0110\u01b0\u1eddng RSI (s\u1eed d\u1ee5ng RSI 14 ng\u00e0y) trong tr\u01b0\u1eddng h\u1ee3p n\u00e0y ch\u00fang ta c\u00f3 th\u1ec3 l\u1ea5y 2 m\u1ee9c bi\u00ean l\u00e0 80 (overbought) v\u00e0 20 (eoversold), bi\u1ec3u \u0111\u1ed3 \u0111\u00e3 cho th\u1ea5y RSI \u0111ang \u0111i xu\u1ed1ng khi g\u1eb7p m\u1ee9c 80 nh\u01b0 v\u1eady gi\u00e1 s\u1ebd kh\u00f4ng th\u1ec3 v\u01b0\u1ee3t h\u01a1n m\u1ee9c tr\u01b0\u1edbc \u0111\u00f3 v\u00e0 b\u1ea1n n\u00ean mua khi gi\u00e1 r\u1edbt xu\u1ed1ng t\u1edbi l\u00fac m\u00e0 \u0111\u01b0\u1eddng RSI ch\u1ea1m m\u1ee9c 30 ( ch\u00fang ta n\u00ean ch\u1ecdn 30 thay cho 20 trong tr\u01b0\u1eddng h\u1ee3p n\u00e0y). Tuy nhi\u00ean \u0111\u1ec3 r\u00f5 h\u01a1n th\u00ec c\u1ea7n k\u1ebft h\u1ee3p v\u1edbi \u0111\u01b0\u1eddng Stochastic Oscillator hay ADX.<\/p>\n

S\u1eed d\u1ee5ng RSI trong h\u1ec7 th\u1ed1ng mua b\u00e1n (trading system):<\/b><\/p>\n

1. C\u00e1c m\u1ee9c c\u1ee7a RSI: 70% (th\u01b0\u1eddng d\u00f9ng l\u00e0 80%) l\u00e0 m\u1ee9c m\u00e0 nh\u00e0 \u0111\u1ea7u t\u01b0 b\u00e1n qu\u00e1 nhi\u1ec1u (overbought), 30% (th\u01b0\u1eddng d\u00f9ng l\u00e0 20%) l\u00e0 m\u1ee9c m\u00e0 nh\u00e0 \u0111\u1ea7u t\u01b0 mua qu\u00e1 nhi\u1ec1u (oversold). Mua khi th\u1ecb tr\u01b0\u1eddng \u1edf m\u1ee9c oversold v\u00e0 b\u00e1n khi th\u1ecb tr\u01b0\u1eddng \u1edf overbought l\u01b0u \u00fd ch\u1ec9 \u00e1p d\u1ee5ng \u0111i\u1ec1u n\u00e0y cho 1 th\u1eddi k\u1ef3 bi\u1ebfn \u0111\u1ed9ng c\u00f2n khi \u0111ang h\u00ecnh th\u00e0nh 1 xu h\u01b0\u1edbng th\u00ec s\u1ebd kh\u00f4ng \u0111\u00fang.<\/p>\n

2. EMA nh\u01b0 l\u00e0 vai tr\u00f2 c\u1ee7a \u0111\u01b0\u1eddng h\u1ed7 tr\u1ee3 hay kh\u00e1ng c\u1ef1 (support or resistance). Mua khi RSI t\u0103ng l\u00ean tr\u00ean EMA v\u00e0 b\u00e1n khi RSI r\u01a1i xu\u1ed1ng d\u01b0\u1edbi EMA. EMA l\u00e0 1 t\u00ednh hi\u1ec7u tr\u1ec5 v\u00e0 th\u01b0\u1eddng \u0111\u01b0a ra t\u00edn hi\u1ec7u mua khi v\u01b0\u1ee3t qua th\u1eddi k\u1ef3 uptrend.<\/p>\n

3. Bullish divergence (t\u00edn hi\u1ec7u ph\u00e2n k\u1ef3 mua): t\u00edn hi\u1ec7u mua khi \u0111\u01b0\u1eddng gi\u00e1 \u0111ang \u0111i xu\u1ed1ng trong khi RSI th\u00ec \u0111ang t\u0103ng, t\u01b0\u01a1ng t\u1ef1 bearish divergence (t\u00edn hi\u1ec7u ph\u00e2n k\u1ef3 b\u00e1n): t\u00edn hi\u1ec7u b\u00e1n khi \u0111\u01b0\u1eddng gi\u00e1 t\u0103ng trong khi \u0111\u01b0\u1eddng RSi th\u00ec l\u1ea1i gi\u1ea3m. M\u1eb7t h\u1ea1n ch\u1ebf c\u1ee7a s\u1ef1 ph\u00e2n k\u1ef3 (divergence) l\u00e0 ch\u00fang c\u1ed1 g\u1eafng b\u00e1o tr\u01b0\u1edbc 1 xu h\u01b0\u1edbng \u0111\u1ea3o chi\u1ec1u thay v\u00ec x\u00e1c \u0111\u1ecbnh theo 1 xu h\u01b0\u1edbng.<\/p>\n

4. D\u1ea1ng \u0111\u1ed3 th\u1ecb: xu h\u01b0\u1edbng, kh\u00e1ng c\u1ef1\/h\u1ed7 tr\u1ee3, tam gi\u00e1c (triangles), \u0111\u1ea7u-vai (head and shoulders) khi \u00e1p d\u1ee5ng RSI n\u00f3 gi\u1ed1ng nh\u01b0 \u0111\u01b0\u1eddng d\u1eabn cho gi\u00e1. C\u00e1i d\u1edf l\u00e0 d\u1ea1ng \u0111\u1ed3 th\u1ecb: xu h\u01b0\u1edbng, tam gi\u00e1… l\u00e0 quan \u0111i\u1ec3m c\u00e1 nh\u00e2n ph\u1ee5 thu\u1ed9c v\u00e0o ch\u1ee7 quan c\u1ee7a t\u1eebng traders n\u00ean kh\u00f4ng th\u1ec3 s\u1eed d\u1ee5ng trong trading system.<\/p>\n

B\u1ed1 c\u1ee5c c\u1ee7a RSI v\u00e0 Bollinger Bands: Ch\u00fang ta \u00e1p d\u1ee5ng Bollinger Bands (BB) \u0111\u1ec3 nghi\u00ean c\u1ee9u ch\u1ec9 b\u00e1o RSI. T\u00edn hi\u1ec7u mua x\u1ea3y ra khi RSI r\u1edbt xu\u1ed1ng d\u01b0\u1edbi d\u1ea3i d\u01b0\u1edbi c\u1ee7a BB (lower BB), t\u00edn hi\u1ec7u mua xu\u1ea5t hi\u1ec7n khi RSI t\u0103ng v\u01b0\u1ee3t qua d\u1ea3i tr\u00ean c\u1ee7a BB (upper BB). \u0110\u00e2y l\u00e0 nh\u1eefng ch\u1ec9 b\u00e1o t\u01b0\u01a1ng ph\u1ea3n xu h\u01b0\u1edbng v\u00ec ch\u00fang ta c\u1ea7n ph\u1ea3i s\u1eed d\u1ee5ng th\u00eam v\u00e0i b\u1ed9 l\u1ecdc c\u1ee7a xu h\u01b0\u1edbng. Ch\u00fang ta c\u00f3 th\u1ec3 th\u00eam v\u00e0o ch\u1ec9 b\u00e1o MACD v\u00e0o b\u1ed9 l\u1ecdc xu h\u01b0\u1edbng nh\u01b0 sau: n\u1ebfu MACD > 0 th\u00ec xu h\u01b0\u1edbng \u0111i l\u00ean.<\/span><\/p>\n

H\u00ecnh minh h\u1ecda:<\/span><\/p>\n

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\"\"<\/a><\/span><\/p>\n","protected":false},"excerpt":{"rendered":"

Ch\u1ec9 s\u1ed1 RSI gi\u1ea3i quy\u1ebft v\u1ea5n \u0111\u1ec1 c\u1ee7a nh\u1eefng d\u1ecbch chuy\u1ec3n b\u1ea5t th\u01b0\u1eddng v\u00e0 gi\u1ea3i quy\u1ebft nhu c\u1ea7u v\u1ec1 m\u1ed9t bi\u00ean \u0111\u1ed9 gi\u1edbi h\u1ea1n tr\u00ean v\u00e0 d\u01b0\u1edbi kh\u00f4ng \u0111\u1ed5i. Ch\u1ec9 s\u1ed1 RSI \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh theo c\u00f4ng th\u1ee9c sau: RSI = 100 – 100\/(1+RS) RS = Trung b\u00ecnh gi\u00e1 \u0111\u00f3ng c\u1eeda t\u0103ng c\u1ee7a x ng\u00e0y\/Trung … Continue reading “RSI (Relative Strength Index)”<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[9],"tags":[],"class_list":["post-322","post","type-post","status-publish","format-standard","hentry","category-phan-tich-ky-thuat"],"_links":{"self":[{"href":"https:\/\/robostock.vn\/web\/wp-json\/wp\/v2\/posts\/322","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/robostock.vn\/web\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/robostock.vn\/web\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/robostock.vn\/web\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/robostock.vn\/web\/wp-json\/wp\/v2\/comments?post=322"}],"version-history":[{"count":0,"href":"https:\/\/robostock.vn\/web\/wp-json\/wp\/v2\/posts\/322\/revisions"}],"wp:attachment":[{"href":"https:\/\/robostock.vn\/web\/wp-json\/wp\/v2\/media?parent=322"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/robostock.vn\/web\/wp-json\/wp\/v2\/categories?post=322"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/robostock.vn\/web\/wp-json\/wp\/v2\/tags?post=322"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}