{"id":52440,"date":"2026-08-21T08:00:41","date_gmt":"2026-08-21T08:00:41","guid":{"rendered":"https:\/\/www.vtmarkets.com\/fr-latam\/uncategorized\/usdx-slides-as-treasury-buyback-shifts-market-sentiment\/"},"modified":"2026-08-21T08:00:41","modified_gmt":"2026-08-21T08:00:41","slug":"usdx-slides-as-treasury-buyback-shifts-market-sentiment","status":"publish","type":"post","link":"https:\/\/www.vtmarkets.com\/fr-latam\/analysis\/usdx-slides-as-treasury-buyback-shifts-market-sentiment\/","title":{"rendered":"Le USDX recule alors que le programme de rachats du Tr\u00e9sor modifie le sentiment de march\u00e9"},"content":{"rendered":"\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" src=\"https:\/\/www.vtmarkets.com\/wp-content\/uploads\/2026\/07\/usdx-2.webp\" alt=\"usdx\" class=\"wp-image-62430\"\/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Points<\/strong> <strong>cl\u00e9s :<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Le dollar am\u00e9ricain a recul\u00e9 apr\u00e8s l\u2019annonce par le Tr\u00e9sor d\u2019un \u00e9largissement des rachats d\u2019obligations \u00e0 longue \u00e9ch\u00e9ance (des titres de dette de l\u2019\u00c9tat am\u00e9ricain qui arrivent \u00e0 maturit\u00e9 plus tard).<\/li>\n\n\n\n<li>La baisse des rendements des bons du Tr\u00e9sor \u00e0 long terme (le taux de r\u00e9mun\u00e9ration offert par ces obligations) a pes\u00e9 sur le billet vert, les investisseurs r\u00e9\u00e9valuant l\u2019attrait des actifs am\u00e9ricains.<\/li>\n\n\n\n<li>Le plan de rachat a raviv\u00e9 les interrogations sur l\u2019\u00e9volution future des rendements, certains strat\u00e9gistes jugeant la mesure d\u00e9favorable au sentiment sur le dollar.<\/li>\n\n\n\n<li>L\u2019USDX \u00e9volue autour de la <strong>zone des 98,68<\/strong> apr\u00e8s un repli vers des plus bas r\u00e9cents, les op\u00e9rateurs cherchant des signes de stabilisation.<\/li>\n\n\n\n<li>Les march\u00e9s surveillent la communication de la R\u00e9serve f\u00e9d\u00e9rale (Fed, la banque centrale am\u00e9ricaine), l\u2019\u00e9tat du march\u00e9 des obligations du Tr\u00e9sor et les prochaines statistiques \u00e9conomiques.<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<p class=\"wp-block-paragraph\">L\u2019USDX (indice du dollar, qui mesure le dollar face \u00e0 un panier de grandes devises) a subi de nouvelles pressions apr\u00e8s l\u2019annonce du Tr\u00e9sor am\u00e9ricain d\u2019achats plus importants sur des obligations \u00e0 longue maturit\u00e9, amenant les investisseurs \u00e0 revoir leurs anticipations sur les rendements et sur la devise.<\/p>\n\n\n\n<figure class=\"wp-block-embed is-type-rich is-provider-x wp-block-embed-x\"><div class=\"wp-block-embed__wrapper\">\n<blockquote class=\"twitter-tweet\" data-width=\"500\" data-dnt=\"true\"><p lang=\"en\" dir=\"ltr\">The dollar tumbled by the most in three weeks to its weakest level since mid-May after the bond market rallied on the US Treasury Department\u2019s unexpected announcement that it is increasing buybacks of long-dated bonds. <a href=\"https:\/\/t.co\/v6jPvErNz9\">https:\/\/t.co\/v6jPvErNz9<\/a><\/p>&mdash; Bloomberg (@business) <a href=\"https:\/\/x.com\/business\/status\/2090131714349662634?ref_src=twsrc%5Etfw\">August 19, 2026<\/a><\/blockquote><script async src=\"https:\/\/platform.x.com\/widgets.js\" charset=\"utf-8\"><\/script>\n<\/div><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">L\u2019annonce de ces rachats a d\u00e9tendu le segment long du march\u00e9 des Treasuries (les \u00e9ch\u00e9ances longues), faisant reculer les rendements. Or, des rendements plus faibles r\u00e9duisent l\u2019int\u00e9r\u00eat d\u2019investir en actifs am\u00e9ricains, ce qui peut diminuer la demande de dollars. L\u2019USDX s\u2019est ainsi rapproch\u00e9 de ses plus bas de trois mois.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Pourquoi les traders surveillent le dollar<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Le mouvement r\u00e9cent montre que le dollar r\u00e9agit de plus en plus aux d\u00e9cisions du Tr\u00e9sor et, plus largement, aux conditions financi\u00e8res (niveau des taux, co\u00fbt du cr\u00e9dit et app\u00e9tit pour le risque).<\/p>\n\n\n\n<figure class=\"wp-block-embed is-type-rich is-provider-x wp-block-embed-x\"><div class=\"wp-block-embed__wrapper\">\n<blockquote class=\"twitter-tweet\" data-width=\"500\" data-dnt=\"true\"><p lang=\"en\" dir=\"ltr\">Fed Chair Kevin Warsh has pledged price stability, but Treasury Secretary Scott Bessent\u2019s decision to double buybacks of longer-dated debt may complicate those efforts. Questions are mounting over how closely the two are coordinating, economist Gregory Daco says <a href=\"https:\/\/t.co\/Nbcw1uv8Md\">pic.twitter.com\/Nbcw1uv8Md<\/a><\/p>&mdash; Reuters (@Reuters) <a href=\"https:\/\/x.com\/Reuters\/status\/2090486519278796902?ref_src=twsrc%5Etfw\">August 20, 2026<\/a><\/blockquote><script async src=\"https:\/\/platform.x.com\/widgets.js\" charset=\"utf-8\"><\/script>\n<\/div><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Au-del\u00e0 de la r\u00e9action imm\u00e9diate, les investisseurs \u00e9valuent si une intervention plus marqu\u00e9e du Tr\u00e9sor peut modifier la perception de la politique budg\u00e9taire am\u00e9ricaine (gestion des recettes et d\u00e9penses publiques) et de la stabilit\u00e9 du march\u00e9 \u00e0 long terme.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">L\u2019attention se tourne maintenant vers les attentes de politique mon\u00e9taire de la Fed, les statistiques \u00e9conomiques et l\u2019\u00e9volution du march\u00e9 obligataire, afin d\u2019affiner les perspectives sur le dollar.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Niveaux cl\u00e9s surveill\u00e9s<\/h2>\n\n\n\n<!-- TradingView Widget BEGIN --><div class=\"tradingview-widget-container\">  <div class=\"tradingview-widget-container__widget\"><\/div>  <div class=\"tradingview-widget-copyright\"><a href=\"https:\/\/www.tradingview.com\/symbols\/VANTAGE-USDX\/\" rel=\"noopener nofollow\" target=\"_blank\"><span class=\"blue-text\">USDX chart<\/span><\/a><span class=\"trademark\"> by TradingView<\/span><\/div>  <script type=\"text\/javascript\" src=\"https:\/\/s3.tradingview.com\/external-embedding\/embed-widget-advanced-chart.js\" async>  {  \"allow_symbol_change\": true,  \"calendar\": false,  \"details\": false,  \"hide_side_toolbar\": true,  \"hide_top_toolbar\": false,  \"hide_legend\": false,  \"hide_volume\": false,  \"hotlist\": false,  \"interval\": \"D\",  \"locale\": \"en\",  \"save_image\": true,  \"style\": \"1\",  \"symbol\": \"VANTAGE:USDX\",  \"theme\": \"dark\",  \"timezone\": \"Etc\/UTC\",  \"backgroundColor\": \"#0F0F0F\",  \"gridColor\": \"rgba(242, 242, 242, 0.2)\",  \"watchlist\": [],  \"withdateranges\": false,  \"compareSymbols\": [],  \"support_host\": \"https:\/\/www.tradingview.com\",  \"studies\": [],  \"width\": 900,  \"height\": 500}  <\/script><\/div><!-- TradingView Widget END -->\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td class=\"has-text-align-center\" data-align=\"center\"><strong>Niveau de prix<\/strong><\/td><td class=\"has-text-align-center\" data-align=\"center\"><strong>Ce que surveillent les traders<\/strong><\/td><\/tr><tr><td>99<\/td><td>R\u00e9sistance psychologique (niveau \u00ab rond \u00bb souvent observ\u00e9) si l\u2019USDX prolonge son rebond<\/td><\/tr><tr><td>98,75<\/td><td>Plus haut r\u00e9cent en s\u00e9ance et zone de r\u00e9sistance imm\u00e9diate<\/td><\/tr><tr><td>98,68<\/td><td>Zone actuelle, rep\u00e8re de court terme<\/td><\/tr><tr><td>98,67<\/td><td>Zone de moyenne mobile de court terme (moyenne des prix r\u00e9cents, utilis\u00e9e pour lisser la tendance)<\/td><\/tr><tr><td>98,65<\/td><td>Plus bas r\u00e9cent et support imm\u00e9diat (zone o\u00f9 les achats peuvent freiner la baisse)<\/td><\/tr><tr><td>98,5<\/td><td>Zone de support importante si la pression vendeuse reprend<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">L\u2019USDX \u00e9volue autour de la <strong>zone des 98,68<\/strong> apr\u00e8s un rebond depuis le creux de s\u00e9ance proche de <strong>98,65<\/strong>, revenant vers la moyenne mobile de court terme autour de <strong>98,67<\/strong>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Un passage au-dessus de <strong>98,75<\/strong> pourrait signaler un regain de dynamique \u00e0 court terme (acc\u00e9l\u00e9ration du mouvement), avec la <strong>zone de r\u00e9sistance 99,00<\/strong> en ligne de mire.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u00c0 l\u2019inverse, une cassure sous <strong>98,65<\/strong> pourrait indiquer un retour des ventes, et mettre en avant la <strong>zone de support 98,50<\/strong>.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Sc\u00e9narios haussier et baissier<\/h2>\n\n\n\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" src=\"https:\/\/www.vtmarkets.com\/wp-content\/uploads\/2026\/08\/usdx218-1024x473.webp\" alt=\"usdx\" class=\"wp-image-65733\"\/><\/figure>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td class=\"has-text-align-center\" data-align=\"center\"><strong>Sc\u00e9nario<\/strong><\/td><td class=\"has-text-align-center\" data-align=\"center\"><strong>Signal<\/strong><\/td><td class=\"has-text-align-center\" data-align=\"center\"><strong>R\u00e9action de march\u00e9 possible<\/strong><\/td><\/tr><tr><td>Tentative de rebond<\/td><td>Tenir au-dessus de 98,65<\/td><td>L\u2019USDX pourrait retester la r\u00e9sistance \u00e0 98,75<\/td><\/tr><tr><td>Sortie haussi\u00e8re<\/td><td>Franchir 98,75<\/td><td>La dynamique pourrait se renforcer vers 99,00<\/td><\/tr><tr><td>Consolidation en range<\/td><td>Rester entre 98,65 et 98,75<\/td><td>L\u2019USDX pourrait \u00e9voluer dans un couloir, le temps que le march\u00e9 choisisse une direction<\/td><\/tr><tr><td>Rupture baissi\u00e8re<\/td><td>Passer sous 98,65<\/td><td>La pression vendeuse pourrait s\u2019accentuer vers 98,50<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Le <strong>sc\u00e9nario haussier<\/strong> repose sur un maintien au-dessus de la <strong>zone 98,65<\/strong> et un retour vers <strong>98,75<\/strong>. Une installation durable au-dessus de cette r\u00e9sistance pourrait signaler une am\u00e9lioration de la dynamique \u00e0 court terme.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Le <strong>sc\u00e9nario baissier<\/strong> prend de l\u2019importance en cas de rupture sous <strong>98,65<\/strong>, ce qui pourrait prolonger la faiblesse et exposer la <strong>zone de support 98,50<\/strong>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><em>Avertissement<\/em><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><em>Les niveaux de prix et sc\u00e9narios ci-dessus refl\u00e8tent l\u2019analyse de l\u2019auteur au moment de la r\u00e9daction. Ils ne constituent pas un conseil en investissement ni une recommandation officielle de VT Markets. Les march\u00e9s peuvent \u00e9voluer rapidement sous l\u2019effet d\u2019\u00e9v\u00e9nements g\u00e9opolitiques, de changements d\u2019offre et de facteurs macro\u00e9conomiques (inflation, croissance, politique mon\u00e9taire).<\/em><\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Trader l\u2019indice du dollar (USDX) via des CFD avec VT Markets<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">L\u2019USDX est souvent anim\u00e9 lorsque les anticipations sur la Fed, les risques d\u2019inflation, les prix du p\u00e9trole, la g\u00e9opolitique et les flux de changes mondiaux (mouvements d\u2019achat\/vente de devises) \u00e9voluent en m\u00eame temps.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Avec VT Markets, les traders peuvent acc\u00e9der \u00e0 des CFD (contrats sur diff\u00e9rence : un produit d\u00e9riv\u00e9 qui permet de sp\u00e9culer sur la hausse ou la baisse d\u2019un prix sans d\u00e9tenir l\u2019actif) sur l\u2019USDX, ainsi que sur les principales paires de devises, l\u2019or, le p\u00e9trole, des indices, des actions et des ETF (fonds cot\u00e9s en Bourse qui r\u00e9pliquent un indice).<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Cela permet de suivre le dollar tout en comparant l\u2019\u00e9volution de USDJPY, EURUSD, XAUUSD (or contre dollar) et des march\u00e9s de l\u2019\u00e9nergie.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Les outils graphiques de VT Markets permettent de surveiller les supports, r\u00e9sistances, moyennes mobiles et les cassures (sorties d\u2019une zone de prix) au fil de la formation du prochain sc\u00e9nario sur l\u2019USDX.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Commencez \u00e0<a href=\"https:\/\/www.vtmarkets.com\/indices\/\" target=\"_blank\" rel=\"noopener\" title=\"\"> trader les indices<\/a> avec VT Markets d\u00e8s aujourd\u2019hui.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Pourquoi trader l\u2019USDX via des CFD avec VT Markets ?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Les CFD sur l\u2019USDX permettent de se positionner sur la hausse ou la baisse de l\u2019indice du dollar sans d\u00e9tenir le panier de devises sous-jacent (les monnaies qui composent l\u2019indice).<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Cette souplesse peut aider lorsque le dollar r\u00e9agit vite aux attentes sur la Fed, aux signaux d\u2019inflation, aux variations du p\u00e9trole, \u00e0 la g\u00e9opolitique et \u00e0 la demande de valeur refuge (recherche d\u2019actifs jug\u00e9s plus s\u00fbrs).<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Si l\u2019USDX franchit une r\u00e9sistance, les traders peuvent suivre un sc\u00e9nario de poursuite haussi\u00e8re. Si la dynamique faiblit, ils peuvent envisager un sc\u00e9nario de baisse.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Avec VT Markets, il est possible de suivre l\u2019USDX en temps r\u00e9el et de le comparer \u00e0 d\u2019autres march\u00e9s en CFD via un seul compte.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u00c0 surveiller ensuite<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Le prochain mouvement de l\u2019USDX d\u00e9pendra de la mani\u00e8re dont le march\u00e9 interpr\u00e8te la politique du Tr\u00e9sor, les attentes vis-\u00e0-vis de la Fed et la demande g\u00e9n\u00e9rale de dollars.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Facteurs cl\u00e9s :<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>R\u00e9action du march\u00e9 des Treasuries :<\/strong> les rachats d\u2019obligations apportent-ils un soutien durable aux rendements longs ?<\/li>\n\n\n\n<li><strong>Communication de la Fed :<\/strong> d\u00e9clarations des responsables susceptibles d\u2019influencer les anticipations de taux (attentes sur la future trajectoire des taux directeurs).<\/li>\n\n\n\n<li><strong>Statistiques am\u00e9ricaines :<\/strong> indicateurs d\u2019inflation et de croissance qui orientent la devise.<\/li>\n\n\n\n<li><strong>Rendements des Treasuries :<\/strong> nouveaux mouvements sur les obligations, \u00e0 mesure que les investisseurs r\u00e9\u00e9valuent les actifs am\u00e9ricains.<\/li>\n\n\n\n<li><strong>Sentiment sur les devises :<\/strong> la faiblesse r\u00e9cente se prolonge-t-elle face aux grandes monnaies ?<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">D\u2019un point de vue technique (analyse des graphiques et des niveaux de prix), les traders observent si <strong>l\u2019USDX peut repasser au-dessus de 98,75<\/strong>, tandis que <strong>98,65 reste le support de court terme<\/strong> si la pression baissi\u00e8re revient.<\/p>\n\n\n\n<details class=\"wp-block-details is-layout-flow wp-block-details-is-layout-flow\"><summary><strong>Questions fr\u00e9quentes<\/strong><\/summary>\n<h3 class=\"wp-block-heading\"><strong>Pourquoi l\u2019USDX a-t-il baiss\u00e9 ?<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">L\u2019USDX a recul\u00e9 apr\u00e8s l\u2019annonce par le Tr\u00e9sor d\u2019un \u00e9largissement des rachats d\u2019obligations, ce qui a fait baisser les rendements de long terme et a conduit les investisseurs \u00e0 reconsid\u00e9rer l\u2019attrait des actifs am\u00e9ricains.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Quel est le lien entre rendements du Tr\u00e9sor et USDX ?<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Les rendements des Treasuries influencent l\u2019envie d\u2019acheter des actifs am\u00e9ricains. Des rendements plus \u00e9lev\u00e9s peuvent soutenir le dollar, tandis que des rendements attendus plus faibles le rendent moins attractif.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Pourquoi les rachats du Tr\u00e9sor influencent-ils l\u2019USDX ?<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Le plan de rachat a modifi\u00e9 les attentes sur le march\u00e9 des Treasuries en r\u00e9duisant la pression sur les rendements longs, ce qui a amen\u00e9 les investisseurs \u00e0 revoir leurs perspectives sur le dollar.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Quelles devises peuvent profiter d\u2019un dollar plus faible ?<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Le yen, le franc suisse et le dollar n\u00e9o-z\u00e9landais peuvent progresser quand l\u2019USDX baisse, selon le contexte de march\u00e9.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Quels niveaux USDX surveiller ?<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Les traders suivent <strong>98,75<\/strong> comme niveau potentiel de reprise, tandis que <strong>98,65<\/strong> reste la zone de support de court terme.<\/p>\n<\/details>\n\n\n\n\n<p class=\"wp-block-paragraph\"><b>Commencez \u00e0 trader d\u00e8s maintenant \u2014 cliquez <a href=\"https:\/\/www.vtmarkets.com\/fr-latam\/trade-now\/\">ici<\/a> pour cr\u00e9er votre compte r\u00e9el VT Markets.<\/b>\n\n<\/p>","protected":false},"excerpt":{"rendered":"<p>Coup de froid sur le billet vert : l\u2019USDX recule vers 98,68 apr\u00e8s l\u2019\u00e9largissement des rachats longs du Tr\u00e9sor. La d\u00e9tente des rendements p\u00e8se sur l\u2019attrait des actifs am\u00e9ricains. Traders focalis\u00e9s Fed, stats, seuils 98,65\/98,75.<\/p>\n","protected":false},"author":87,"featured_media":52439,"comment_status":"","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[14],"tags":[],"class_list":["post-52440","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-analysis"],"acf":{"acf_article_selection_author":null},"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO Pro 5.0.1 - aioseo.com -->\n\t<meta name=\"description\" content=\"Coup de froid sur le billet vert : l\u2019USDX recule vers 98,68 apr\u00e8s l\u2019\u00e9largissement des rachats longs du Tr\u00e9sor. La d\u00e9tente des rendements p\u00e8se sur l\u2019attrait des actifs am\u00e9ricains. 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