{"id":36926,"date":"2026-05-28T14:52:55","date_gmt":"2026-05-28T14:52:55","guid":{"rendered":"https:\/\/volity.io\/non-classifiee\/what-is-bid-ask-spread\/"},"modified":"2026-06-04T12:14:52","modified_gmt":"2026-06-04T12:14:52","slug":"what-is-bid-ask-spread","status":"publish","type":"post","link":"https:\/\/volity.io\/fr\/glossaire\/what-is-bid-ask-spread\/","title":{"rendered":"Qu&rsquo;est-ce que le spread bid-ask"},"content":{"rendered":"<h2>Comment fonctionne l&rsquo;\u00e9cart achat-vente<\/h2>\n<p>L&rsquo;\u00e9cart achat-vente est la diff\u00e9rence entre le prix le plus haut que les acheteurs paieront (le bid) et le plus bas que les vendeurs accepteront (l&rsquo;ask). Vous achetez \u00e0 l&rsquo;ask et vendez au bid, donc l&rsquo;\u00e9cart est un co\u00fbt instantan\u00e9 pay\u00e9 sur chaque aller-retour. C&rsquo;est le co\u00fbt de transaction le plus basique de tout march\u00e9, et il s&rsquo;\u00e9largit quand la liquidit\u00e9 est mince et se resserre quand elle est profonde.<\/p>\n<h2>Exemple chiffr\u00e9<\/h2>\n<p>Une paire affiche un bid de 1,0849 et un ask de 1,0850, un \u00e9cart d&rsquo;un <a href=\"https:\/\/volity.io\/fr\/glossaire\/what-is-a-pip\/\">pip<\/a>. Si vous achetez \u00e0 1,0850 et vendez aussit\u00f4t \u00e0 1,0849, vous perdez un pip sans que le prix bouge, l&rsquo;\u00e9cart est simplement la part du courtier et du march\u00e9. Sur un lot standard, c&rsquo;est environ 10 $. Sur un instrument mince, l&rsquo;\u00e9cart pourrait \u00eatre de dix pips, rendant le trading fr\u00e9quent bien plus cher.<\/p>\n<h2>Les \u00e9carts sur Volity<\/h2>\n<p>L&rsquo;\u00e9cart est pourquoi les instruments liquides sont moins chers \u00e0 trader. Sur Volity, les \u00e9carts dynamiques sur les <a href=\"https:\/\/volity.io\/fr\/glossaire\/what-is-a-major-pair\/\">paires majeures<\/a> peuvent se resserrer vers une fraction de pip en pleine liquidit\u00e9, donc le co\u00fbt aller-retour reste bas. Les \u00e9carts s&rsquo;\u00e9largissent aux heures calmes et autour des nouvelles, exactement quand \u00eatre prudent, surtout pour les styles \u00e0 haute fr\u00e9quence comme le <a href=\"https:\/\/volity.io\/fr\/glossaire\/what-is-scalping\/\">scalping<\/a>.<\/p>\n<h2>Pourquoi c&rsquo;est important<\/h2>\n<p>L&rsquo;\u00e9cart est un co\u00fbt pay\u00e9 sur chaque trade, donc il se compose discr\u00e8tement pour les traders actifs et d\u00e9cide si une strat\u00e9gie \u00e0 haute fr\u00e9quence peut m\u00eame \u00eatre rentable. Connaissez toujours l&rsquo;\u00e9cart avant d&rsquo;entrer. \u00c0 lire aussi : <a href=\"https:\/\/volity.io\/fr\/glossaire\/what-is-spread-in-forex\/\">spread en forex<\/a> et <a href=\"https:\/\/volity.io\/fr\/glossaire\/what-is-slippage\/\">slippage<\/a>.<\/p>\n<p>Pour aller plus loin, voir notre page <a href=\"https:\/\/volity.io\/fr\/forex\/\">forex<\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Comment fonctionne l&rsquo;\u00e9cart achat-vente L&rsquo;\u00e9cart achat-vente est la diff\u00e9rence entre le prix le plus haut que les acheteurs paieront (le bid) et [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":37120,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"inline_featured_image":false,"custom_schema":"","footnotes":""},"categories":[258],"tags":[],"class_list":["post-36926","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-glossaire"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v27.7 (Yoast SEO v27.8) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Qu&#039;est-ce que le spread bid-ask<\/title>\n<meta name=\"description\" content=\"Le spread bid-ask est l&#039;\u00e9cart entre meilleur bid et meilleur ask. 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