{"id":1507,"date":"2026-10-12T12:00:06","date_gmt":"2026-10-12T10:00:06","guid":{"rendered":"https:\/\/wegetfunded.com\/?p=1507"},"modified":"2026-10-12T12:01:07","modified_gmt":"2026-10-12T10:01:07","slug":"ordre-ioc-ordre-fok-b5d83a","status":"publish","type":"post","link":"https:\/\/wegetfunded.com\/fr\/blog\/ordre-ioc-ordre-fok-b5d83a\/","title":{"rendered":"Ordre IOC et ordre FOK : la diff\u00e9rence exacte entre ex\u00e9cution partielle et ex\u00e9cution totale ou nulle"},"content":{"rendered":"<p>Un ordre IOC ordre FOK d\u00e9signe deux validit\u00e9s d&rsquo;ordre qui g\u00e8rent diff\u00e9remment le volume non ex\u00e9cut\u00e9 imm\u00e9diatement : l&rsquo;ordre IOC (Immediate or Cancel) accepte une ex\u00e9cution partielle et annule le reste, tandis que l&rsquo;ordre FOK (Fill or Kill) exige une ex\u00e9cution totale et imm\u00e9diate, sinon il est annul\u00e9 en bloc. Cette distinction est d\u00e9finie par les proc\u00e9dures de n\u00e9gociation d&rsquo;Euronext pour ses march\u00e9s d\u00e9riv\u00e9s, mises \u00e0 jour en juin 2026.<\/p>\n\n<h2>Ce que fait un ordre IOC<\/h2>\n<p>Selon le document Euronext Derivatives Markets Trading Procedures, un ordre IOC s&rsquo;ex\u00e9cute imm\u00e9diatement contre les ordres d\u00e9j\u00e0 pr\u00e9sents dans le carnet, au prix sp\u00e9cifi\u00e9 ou \u00e0 un meilleur prix s&rsquo;il s&rsquo;agit d&rsquo;un ordre \u00e0 cours limit\u00e9, \u00e0 hauteur du volume disponible : <a href=\"https:\/\/www.euronext.com\/sites\/default\/files\/2026-06\/Euronext%20Trading%20Procedure%20for%20Derivatives_29062026.pdf\" rel=\"noopener\">\u00ab an IOC designation can be added to Limit Orders and will be added to Market Orders automatically if no other designation is specified. IOC orders are immediately executed against any existing orders (at the specified price or better in the case of Limit Orders) up to the volume of the IOC order \u00bb<\/a>. Autrement dit, si seule une partie du volume demand\u00e9 trouve une contrepartie, cette partie est ex\u00e9cut\u00e9e tout de suite.<\/p>\n<p>Le volume qui n&rsquo;a pas pu \u00eatre servi n&rsquo;est jamais conserv\u00e9 en attente dans le carnet d&rsquo;ordres. Le texte est explicite sur ce point : <a href=\"https:\/\/www.euronext.com\/sites\/default\/files\/2026-06\/Euronext%20Trading%20Procedure%20for%20Derivatives_29062026.pdf\" rel=\"noopener\">\u00ab any residual volume left after part of the IOC order has traded will be automatically cancelled by the matching engine \u00bb<\/a>. Le moteur d&rsquo;appariement annule donc lui-m\u00eame le reliquat, sans intervention du trader.<\/p>\n\n<h2>Ce que fait un ordre FOK<\/h2>\n<p>L&rsquo;ordre FOK suit une logique oppos\u00e9e. D&rsquo;apr\u00e8s Euronext, il ne s&rsquo;ex\u00e9cute que si le volume disponible au prix sp\u00e9cifi\u00e9, ou \u00e0 un meilleur prix, permet de satisfaire l&rsquo;ordre dans sa totalit\u00e9 et en une seule fois : <a href=\"https:\/\/www.euronext.com\/sites\/default\/files\/2026-06\/Euronext%20Trading%20Procedure%20for%20Derivatives_29062026.pdf\" rel=\"noopener\">\u00ab a FOK designation can be added to both Limit Orders and Market Orders. FOK orders will only be executed if there is sufficient volume available (at the specified price or better in the case of Limit Orders) for the order to be executed in full \u00bb<\/a>.<\/p>\n<p>Si cette condition n&rsquo;est pas r\u00e9unie au moment o\u00f9 l&rsquo;ordre arrive sur le march\u00e9, il est rejet\u00e9 en int\u00e9gralit\u00e9, sans aucune ex\u00e9cution partielle : <a href=\"https:\/\/www.euronext.com\/sites\/default\/files\/2026-06\/Euronext%20Trading%20Procedure%20for%20Derivatives_29062026.pdf\" rel=\"noopener\">\u00ab if this is not the case the order will be automatically cancelled by the matching engine \u00bb<\/a>. Un FOK ne laisse donc jamais de position partiellement ouverte : c&rsquo;est tout ou rien, imm\u00e9diatement.<\/p>\n\n<h2>Tableau comparatif des deux validit\u00e9s<\/h2>\n<table>\n<caption>Comparaison des r\u00e8gles d&rsquo;ex\u00e9cution IOC et FOK selon Euronext (juin 2026)<\/caption>\n<thead>\n<tr><th scope=\"col\">Crit\u00e8re<\/th><th scope=\"col\">Ordre IOC<\/th><th scope=\"col\">Ordre FOK<\/th><\/tr>\n<\/thead>\n<tbody>\n<tr><th scope=\"row\">Ex\u00e9cution partielle<\/th><td>Accept\u00e9e, \u00e0 hauteur du volume disponible<\/td><td>Refus\u00e9e, tout ou rien<\/td><\/tr>\n<tr><th scope=\"row\">Sort du volume non ex\u00e9cut\u00e9<\/th><td>Annul\u00e9 automatiquement par le moteur d&rsquo;appariement<\/td><td>L&rsquo;ordre entier est annul\u00e9, sans ex\u00e9cution<\/td><\/tr>\n<tr><th scope=\"row\">Applicable aux ordres<\/th><td>Limit Orders, et Market Orders par d\u00e9faut<\/td><td>Limit Orders et Market Orders<\/td><\/tr>\n<tr><th scope=\"row\">Source et date<\/th><td>Euronext Trading Procedure for Derivatives, juin 2026<\/td><td>Euronext Trading Procedure for Derivatives, juin 2026<\/td><\/tr>\n<\/tbody>\n<\/table>\n\n<h2>Ce que ce texte documente, et ce qu&rsquo;il ne documente pas<\/h2>\n<p>Ces d\u00e9finitions proviennent des proc\u00e9dures de n\u00e9gociation d&rsquo;Euronext, c&rsquo;est-\u00e0-dire du fonctionnement d&rsquo;un carnet d&rsquo;ordres sur une bourse r\u00e9glement\u00e9e pour des instruments d\u00e9riv\u00e9s. Ce texte ne d\u00e9crit pas n\u00e9cessairement l&rsquo;ex\u00e9cution sur une plateforme de CFD ou de Forex n\u00e9goci\u00e9e de gr\u00e9 \u00e0 gr\u00e9 : sur ces march\u00e9s, chaque fournisseur de liquidit\u00e9 ou courtier fixe ses propres r\u00e8gles contractuelles d&rsquo;ex\u00e9cution, qui peuvent reprendre les m\u00eames sigles IOC et FOK sans offrir les m\u00eames garanties de prix ou de d\u00e9lai. Avant d&rsquo;utiliser ces validit\u00e9s sur un CFD, il convient donc de v\u00e9rifier la documentation du courtier concern\u00e9 plut\u00f4t que de supposer qu&rsquo;elle reproduit exactement les r\u00e8gles d&rsquo;une bourse comme Euronext.<\/p>\n<p>Par ailleurs, ni l&rsquo;ordre IOC ni l&rsquo;ordre FOK ne garantissent un prix d&rsquo;ex\u00e9cution identique au prix affich\u00e9 : ils garantissent seulement un comportement face au volume disponible, dans les conditions pr\u00e9vues par la place ou le courtier.<\/p>\n<p>Sur un CFD, cette distinction rejoint une question voisine mais diff\u00e9rente, celle du <a href=\"https:\/\/wegetfunded.com\/fr\/blog\/slippage-cfd-forex-c05a05\/\">slippage, c&rsquo;est-\u00e0-dire l&rsquo;\u00e9cart entre le prix affich\u00e9 et le prix r\u00e9ellement obtenu<\/a>. Une validit\u00e9 IOC ou FOK encadre le comportement face au volume disponible, pas l&rsquo;\u00e9cart de prix lui-m\u00eame.<\/p>\n\n<h2>Questions fr\u00e9quentes<\/h2>\n<h3>Un ordre IOC peut-il rester actif plusieurs secondes dans le carnet ?<\/h3>\n<p>Non, selon Euronext, le volume non ex\u00e9cut\u00e9 imm\u00e9diatement est annul\u00e9 automatiquement par le moteur d&rsquo;appariement. Un ordre IOC ne s\u00e9journe donc pas dans le carnet : il s&rsquo;ex\u00e9cute en partie ou en totalit\u00e9 au moment de son arriv\u00e9e, puis le reliquat dispara\u00eet.<\/p>\n<h3>Pourquoi un ordre FOK est-il parfois annul\u00e9 alors qu&rsquo;une partie du volume aurait pu \u00eatre servie ?<\/h3>\n<p>Parce que la r\u00e8gle FOK exige une ex\u00e9cution int\u00e9grale et imm\u00e9diate. Si le volume disponible au prix sp\u00e9cifi\u00e9 ou mieux ne couvre pas la totalit\u00e9 de l&rsquo;ordre, Euronext pr\u00e9cise que l&rsquo;ordre entier est annul\u00e9 par le moteur d&rsquo;appariement, sans aucune ex\u00e9cution partielle.<\/p>\n<h3>Ces r\u00e8gles IOC et FOK s&rsquo;appliquent-elles telles quelles sur une plateforme CFD ?<\/h3>\n<p>Pas n\u00e9cessairement. Le document cit\u00e9 d\u00e9crit le fonctionnement d&rsquo;un carnet d&rsquo;ordres sur les march\u00e9s d\u00e9riv\u00e9s d&rsquo;Euronext, une bourse r\u00e9glement\u00e9e. Sur un CFD n\u00e9goci\u00e9 de gr\u00e9 \u00e0 gr\u00e9, chaque courtier d\u00e9finit ses propres r\u00e8gles d&rsquo;ex\u00e9cution pour ces m\u00eames sigles, qui peuvent diff\u00e9rer de celles d&rsquo;une bourse.<\/p>\n<h3>Un ordre IOC garantit-il le prix annonc\u00e9 ?<\/h3>\n<p>Non. Pour un ordre \u00e0 cours limit\u00e9, Euronext pr\u00e9cise que l&rsquo;ex\u00e9cution se fait au prix sp\u00e9cifi\u00e9 ou \u00e0 un meilleur prix, ce qui encadre le prix minimal acceptable mais ne garantit pas que la totalit\u00e9 du volume trouve une contrepartie \u00e0 ce prix.<\/p>\n\n\n<p class=\"wgf-meta wgf-byline wp-block-paragraph\">Quentin Belsack<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Un ordre IOC ordre FOK d\u00e9signe deux validit\u00e9s d&rsquo;ordre qui g\u00e8rent diff\u00e9remment le volume non ex\u00e9cut\u00e9 imm\u00e9diatement : l&rsquo;ordre IOC (Immediate or Cancel) accepte une ex\u00e9cution partielle et annule le reste, tandis que l&rsquo;ordre FOK (Fill or Kill) exige une ex\u00e9cution totale et imm\u00e9diate, sinon il est annul\u00e9 en bloc. Cette distinction est d\u00e9finie par [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":1506,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_wgf_editorial_author":"quentin","_wgf_editorial_kind":"pedagogique","footnotes":""},"categories":[39],"tags":[],"class_list":["post-1507","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-comprendre-le-trading"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.5 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Ordre IOC ordre FOK : la vraie diff\u00e9rence<\/title>\n<meta name=\"description\" content=\"Ordre IOC ordre FOK : la diff\u00e9rence exacte entre ex\u00e9cution partielle accept\u00e9e et tout ou rien, selon Euronext.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" 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