{"id":30017,"date":"2023-12-07T08:52:42","date_gmt":"2023-12-07T08:52:42","guid":{"rendered":"https:\/\/masterskills.org\/blog\/chi-bao-khoi-luong-can-bang-on-balance-volume-obv-la-gi.html"},"modified":"2023-12-23T06:11:25","modified_gmt":"2023-12-22T23:11:25","slug":"chi-bao-khoi-luong-can-bang-on-balance-volume-obv-la-gi","status":"publish","type":"post","link":"https:\/\/masterskills.org\/blog\/chi-bao-khoi-luong-can-bang-on-balance-volume-obv-la-gi.html","title":{"rendered":"Ch\u1ec9 b\u00e1o kh\u1ed1i l\u01b0\u1ee3ng c\u00e2n b\u1eb1ng (On-Balance Volume &#8211; OBV) l\u00e0 g\u00ec?"},"content":{"rendered":"<div class=\"vnbcbc-body vceditor-content wi-active\" data-role=\"content\">\n<figure class=\"VCSortableInPreviewMode\" type=\"Photo\" style=\"\">\n<div><\/div><figcaption class=\"PhotoCMS_Caption\">\n<p data-placeholder=\"[Nh\u1eadp ch\u00fa th\u00edch \u1ea3nh]\" class=\"\">H\u00ecnh minh h\u1ecda<\/p>\n<\/figcaption><\/figure>\n<h2><font style=\"line-height: 22px; font-size: 22px;\" color=\"#3d85c6\">Ch\u1ec9 b\u00e1o kh\u1ed1i l\u01b0\u1ee3ng c\u00e2n b\u1eb1ng (On-Balance Volume &#8211; OBV)<\/font><\/h2>\n<p><b>Kh\u00e1i ni\u1ec7m<\/b><\/p>\n<p><b>Ch\u1ec9 b\u00e1o kh\u1ed1i l\u01b0\u1ee3ng c\u00e2n b\u1eb1ng<\/b> trong ti\u1ebfng Anh l\u00e0 <b>On-Balance Volume<\/b>; vi\u1ebft t\u1eaft l\u00e0 <b>OBV<\/b>.<\/p>\n<p><i>Ch\u1ec9 b\u00e1o kh\u1ed1i l\u01b0\u1ee3ng c\u00e2n b\u1eb1ng (OBV)<\/i> l\u00e0 m\u1ed9t\u00a0ch\u1ec9 b\u00e1o\u00a0\u0111\u1ed9ng l\u01b0\u1ee3ng trong giao d\u1ecbch k\u0129 thu\u1eadt, s\u1eed d\u1ee5ng d\u00f2ng ch\u1ea3y kh\u1ed1i l\u01b0\u1ee3ng \u0111\u1ec3 d\u1ef1 \u0111o\u00e1n nh\u1eefng thay \u0111\u1ed5i trong gi\u00e1 c\u1ed5 phi\u1ebfu. Joseph Granville l\u1ea7n \u0111\u1ea7u ti\u00ean ph\u00e1t tri\u1ec3n c\u00f4ng c\u1ee5 <i>OBV <\/i>trong cu\u1ed1n s\u00e1ch n\u0103m 1963 c\u1ee7a Granville c\u00f3 t\u00ean &#8220;Granville&#8217;s New Key to Stock Market Profits&#8221; (t\u1ea1m d\u1ecbch: &#8220;Ch\u00eca kh\u00f3a m\u1edbi c\u1ee7a Granville \u0111\u1ec3 gi\u00e0nh l\u1ee3i nhu\u1eadn trong th\u1ecb tr\u01b0\u1eddng ch\u1ee9ng kho\u00e1n&#8221;).<\/p>\n<p>Granville tin r\u1eb1ng kh\u1ed1i l\u01b0\u1ee3ng l\u00e0 l\u1ef1c l\u01b0\u1ee3ng ch\u00ednh \u0111\u1eb1ng sau c\u00e1c th\u1ecb tr\u01b0\u1eddng v\u00e0 thi\u1ebft k\u1ebf <i>OBV <\/i>\u0111\u1ec3 d\u1ef1 b\u00e1o nh\u1eefng \u0111\u1ed9ng th\u00e1i l\u1edbn trong th\u1ecb tr\u01b0\u1eddng s\u1ebd x\u1ea3y ra d\u1ef1a tr\u00ean s\u1ef1 thay \u0111\u1ed5i v\u1ec1 kh\u1ed1i l\u01b0\u1ee3ng.\u00a0 \u00d4ng tin r\u1eb1ng khi kh\u1ed1i l\u01b0\u1ee3ng t\u0103ng m\u1ea1nh m\u00e0 kh\u00f4ng c\u00f3 s\u1ef1 thay \u0111\u1ed5i \u0111\u00e1ng k\u1ec3 v\u1ec1 gi\u00e1 c\u1ed5 phi\u1ebfu, gi\u00e1 cu\u1ed1i c\u00f9ng s\u1ebd t\u0103ng l\u00ean ho\u1eb7c gi\u1ea3m xu\u1ed1ng.<\/p>\n<figure class=\"VCSortableInPreviewMode noCaption\" type=\"Photo\" style=\"\">\n<div><img decoding=\"async\" src=\"https:\/\/masterskills.org\/blog\/wp-content\/uploads\/\/12\/obv-5c536080c9e77c0001a40072-15877860593981972040938.png\" id=\"img_178350454145789952\" w=\"611\" h=\"359\" alt=\"Ch\u1ec9 b\u00e1o kh\u1ed1i l\u01b0\u1ee3ng c\u00e2n b\u1eb1ng (On-Balance Volume - OBV) l\u00e0 g\u00ec? - \u1ea2nh 2.\" title=\"Ch\u1ec9 b\u00e1o kh\u1ed1i l\u01b0\u1ee3ng c\u00e2n b\u1eb1ng (On-Balance Volume - OBV) l\u00e0 g\u00ec? - \u1ea2nh 2.\" rel=\"lightbox\" photoid=\"178350454145789952\" type=\"photo\" style=\"max-width:100%;\" data-original=\"https:\/\/masterskills.org\/blog\/wp-content\/uploads\/\/12\/obv-5c536080c9e77c0001a40072-15877860593981972040938.png\" width=\"\" height=\"\"><\/div><figcaption class=\"PhotoCMS_Caption\">\n<p data-placeholder=\"[Nh\u1eadp ch\u00fa th\u00edch \u1ea3nh]\" class=\"NLPlaceholderShow\">\n<\/figcaption><\/figure>\n<p><b>C\u00f4ng th\u1ee9c t\u00ednh ch\u1ec9 b\u00e1o kh\u1ed1i l\u01b0\u1ee3ng c\u00e2n b\u1eb1ng<\/b><\/p>\n<p>C\u00f3 ba tr\u01b0\u1eddng h\u1ee3p t\u00ednh OBV:<\/p>\n<p>+ N\u1ebfu gi\u00e1 \u0111\u00f3ng c\u1eeda ng\u00e0y h\u00f4m nay cao h\u01a1n phi\u00ean tr\u01b0\u1edbc \u0111\u00f3:\u00a0<\/p>\n<p>OBV hi\u1ec7n t\u1ea1i = OBV tr\u01b0\u1edbc \u0111\u00f3 + kh\u1ed1i l\u01b0\u1ee3ng hi\u1ec7n t\u1ea1i<\/p>\n<p>+ N\u1ebfu gi\u00e1 \u0111\u00f3ng c\u1eeda ng\u00e0y h\u00f4m nay b\u1eb1ng v\u1edbi phi\u00ean h\u00f4m tr\u01b0\u1edbc:\u00a0<\/p>\n<p>OBV hi\u1ec7n t\u1ea1i = OBV tr\u01b0\u1edbc \u0111\u00f3<\/p>\n<p>+ N\u1ebfu gi\u00e1 \u0111\u00f3ng c\u1eeda ng\u00e0y h\u00f4m nay th\u1ea5p h\u01a1n phi\u00ean tr\u01b0\u1edbc \u0111\u00f3:\u00a0<\/p>\n<p>OBV hi\u1ec7n t\u1ea1i = OBV tr\u01b0\u1edbc \u0111\u00f3 &#8211; kh\u1ed1i l\u01b0\u1ee3ng hi\u1ec7n t\u1ea1i<\/p>\n<p><b>V\u00ed d\u1ee5 v\u1ec1 c\u00e1ch s\u1eed d\u1ee5ng ch\u1ec9 b\u00e1o kh\u1ed1i l\u01b0\u1ee3ng c\u00e2n b\u1eb1ng<\/b><\/p>\n<p>D\u01b0\u1edbi \u0111\u00e2y l\u00e0 danh s\u00e1ch 10 gi\u00e1 tr\u1ecb v\u00e0 kh\u1ed1i l\u01b0\u1ee3ng \u0111\u00f3ng c\u1eeda c\u1ee7a m\u1ed9t c\u1ed5 phi\u1ebfu gi\u1ea3 \u0111\u1ecbnh trong 10 ng\u00e0y:<\/p>\n<p>Ng\u00e0y th\u1ee9 nh\u1ea5t: gi\u00e1 \u0111\u00f3ng c\u1eeda b\u1eb1ng 10 \u0111\u00f4 la, kh\u1ed1i l\u01b0\u1ee3ng b\u1eb1ng 25.200 c\u1ed5 phi\u1ebfu<\/p>\n<p>Ng\u00e0y th\u1ee9 hai: gi\u00e1 \u0111\u00f3ng c\u1eeda b\u1eb1ng 10,15 \u0111\u00f4 la, kh\u1ed1i l\u01b0\u1ee3ng b\u1eb1ng 30.000 c\u1ed5 phi\u1ebfu<\/p>\n<p>Ng\u00e0y th\u1ee9 ba: gi\u00e1 \u0111\u00f3ng c\u1eeda b\u1eb1ng 10,17 \u0111\u00f4 la, kh\u1ed1i l\u01b0\u1ee3ng b\u1eb1ng 25.600 c\u1ed5 phi\u1ebfu<\/p>\n<p>Ng\u00e0y th\u1ee9 4: gi\u00e1 \u0111\u00f3ng c\u1eeda b\u1eb1ng 10,13 \u0111\u00f4 la, kh\u1ed1i l\u01b0\u1ee3ng b\u1eb1ng 32.000 c\u1ed5 phi\u1ebfu<\/p>\n<p>Ng\u00e0y th\u1ee9 5: gi\u00e1 \u0111\u00f3ng c\u1eeda b\u1eb1ng 10,11 \u0111\u00f4 la, kh\u1ed1i l\u01b0\u1ee3ng b\u1eb1ng 23.000 c\u1ed5 phi\u1ebfu<\/p>\n<p>Ng\u00e0y th\u1ee9 6: gi\u00e1 \u0111\u00f3ng c\u1eeda b\u1eb1ng 10,15 \u0111\u00f4 la, kh\u1ed1i l\u01b0\u1ee3ng b\u1eb1ng 40.000 c\u1ed5 phi\u1ebfu<\/p>\n<p>Ng\u00e0y th\u1ee9 7: gi\u00e1 \u0111\u00f3ng c\u1eeda b\u1eb1ng $ 10,20, kh\u1ed1i l\u01b0\u1ee3ng b\u1eb1ng 36.000 c\u1ed5 phi\u1ebfu<\/p>\n<p>Ng\u00e0y th\u1ee9 8: gi\u00e1 \u0111\u00f3ng c\u1eeda b\u1eb1ng 10,20 \u0111\u00f4 la, kh\u1ed1i l\u01b0\u1ee3ng b\u1eb1ng 20.500 c\u1ed5 phi\u1ebfu<\/p>\n<p>Ng\u00e0y th\u1ee9 9: gi\u00e1 \u0111\u00f3ng c\u1eeda b\u1eb1ng 10,22 \u0111\u00f4 la, kh\u1ed1i l\u01b0\u1ee3ng b\u1eb1ng 23.000 c\u1ed5 phi\u1ebfu<\/p>\n<p>Ng\u00e0y th\u1ee9 10: gi\u00e1 \u0111\u00f3ng c\u1eeda b\u1eb1ng 10,21 \u0111\u00f4 la, kh\u1ed1i l\u01b0\u1ee3ng b\u1eb1ng 27.500 c\u1ed5 phi\u1ebfu.<\/p>\n<p>C\u00f3 th\u1ec3 th\u1ea5y, ng\u00e0y hai, ba, 6, 7 v\u00e0 9 l\u00e0 nh\u1eefng ng\u00e0y gi\u00e1 t\u0103ng, v\u00ec v\u1eady c\u00e1c kh\u1ed1i l\u01b0\u1ee3ng giao d\u1ecbch n\u00e0y \u0111\u01b0\u1ee3c th\u00eam v\u00e0o OBV. Ng\u00e0y 4, 5 v\u00e0 10 l\u00e0 ng\u00e0y gi\u00e1 gi\u1ea3m, v\u00ec v\u1eady c\u00e1c kh\u1ed1i l\u01b0\u1ee3ng giao d\u1ecbch n\u00e0y \u0111\u01b0\u1ee3c tr\u1eeb kh\u1ecfi OBV. V\u00e0o ng\u00e0y th\u1ee9 8, kh\u00f4ng c\u00f3 thay \u0111\u1ed5i n\u00e0o \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n \u0111\u1ed1i v\u1edbi OBV v\u00ec gi\u00e1 \u0111\u00f3ng c\u1eeda kh\u00f4ng thay \u0111\u1ed5i. Cho c\u00e1c ng\u00e0y, OBV cho m\u1ed7i 10 ng\u00e0y l\u00e0:<\/p>\n<p>Ng\u00e0y th\u1ee9 nh\u1ea5t: OBV = 0<\/p>\n<p>Ng\u00e0y th\u1ee9 hai: OBV = 0 + 30.000 = 30.000<\/p>\n<p>Ng\u00e0y th\u1ee9 ba: OBV = 30.000 + 25.600 = 55.600<\/p>\n<p>Ng\u00e0y th\u1ee9 4: OBV = 55.600 &#8211; 32.000 = 23.600<\/p>\n<p>Ng\u00e0y th\u1ee9 5: OBV = 23.600 &#8211; 23.000 = 600<\/p>\n<p>Ng\u00e0y th\u1ee9 6: OBV = 600 + 40.000 = 46.600<\/p>\n<p>Ng\u00e0y th\u1ee9 7: OBV = 46.600 + 36.000 = 76.600<\/p>\n<p>Ng\u00e0y th\u1ee9 8: OBV = 76.600 + 0 = 76.600<\/p>\n<p>Ng\u00e0y th\u1ee9 9: OBV = 76.600 + 23.000 = 99.600<\/p>\n<p>Ng\u00e0y th\u1ee9 10: OBV = 99.600 &#8211; 27.500 = 72.100<\/p>\n<p><i>(T\u00e0i li\u1ec7u tham kh\u1ea3o: investopedia.com)<\/i><\/p>\n<\/p><\/div>\n","protected":false},"excerpt":{"rendered":"<div class=\"vnbcbc-sapo\" data-role=\"sapo\">\n                            Ch\u1ec9 b\u00e1o kh\u1ed1i l\u01b0\u1ee3ng c\u00e2n b\u1eb1ng (ti\u1ebfng Anh: On-Balance Volume; vi\u1ebft t\u1eaft: OBV) l\u00e0 m\u1ed9t ch\u1ec9 b\u00e1o \u0111\u1ed9ng l\u01b0\u1ee3ng trong giao d\u1ecbch k\u0129 thu\u1eadt, s\u1eed d\u1ee5ng d\u00f2ng ch\u1ea3y kh\u1ed1i l\u01b0\u1ee3ng \u0111\u1ec3 d\u1ef1 \u0111o\u00e1n nh\u1eefng thay \u0111\u1ed5i trong gi\u00e1 c\u1ed5 phi\u1ebfu.\n                        <\/div>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[417],"tags":[],"_links":{"self":[{"href":"https:\/\/masterskills.org\/blog\/wp-json\/wp\/v2\/posts\/30017"}],"collection":[{"href":"https:\/\/masterskills.org\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/masterskills.org\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/masterskills.org\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/masterskills.org\/blog\/wp-json\/wp\/v2\/comments?post=30017"}],"version-history":[{"count":0,"href":"https:\/\/masterskills.org\/blog\/wp-json\/wp\/v2\/posts\/30017\/revisions"}],"wp:attachment":[{"href":"https:\/\/masterskills.org\/blog\/wp-json\/wp\/v2\/media?parent=30017"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/masterskills.org\/blog\/wp-json\/wp\/v2\/categories?post=30017"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/masterskills.org\/blog\/wp-json\/wp\/v2\/tags?post=30017"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}