{"id":52335,"date":"2026-08-19T08:01:30","date_gmt":"2026-08-19T08:01:30","guid":{"rendered":"https:\/\/www.vtmarkets.com\/fr-latam\/uncategorized\/sp-500-under-pressure-as-tech-stocks-and-yields-weigh\/"},"modified":"2026-08-19T08:01:30","modified_gmt":"2026-08-19T08:01:30","slug":"sp-500-under-pressure-as-tech-stocks-and-yields-weigh","status":"publish","type":"post","link":"https:\/\/www.vtmarkets.com\/fr-latam\/analysis\/sp-500-under-pressure-as-tech-stocks-and-yields-weigh\/","title":{"rendered":"Le S&#038;P 500 sous pression, plomb\u00e9 par les valeurs technologiques et la hausse des rendements obligataires"},"content":{"rendered":"\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" src=\"https:\/\/www.vtmarkets.com\/wp-content\/uploads\/2026\/08\/amd2-1024x573.webp\" alt=\"S&amp;P 500 Sous pression, p\u00e9nalis\u00e9 par les valeurs technologiques et la hausse des rendements\" class=\"wp-image-64325\"\/><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><strong>Points cl\u00e9s :<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Le S&amp;P 500 s\u2019est stabilis\u00e9 apr\u00e8s une baisse men\u00e9e par la technologie, qui a pes\u00e9 sur les actions am\u00e9ricaines.<\/li>\n\n\n\n<li>Les actions des semi-conducteurs et li\u00e9es \u00e0 l\u2019IA (intelligence artificielle) ont subi une nouvelle pression, les investisseurs r\u00e9\u00e9valuant des valorisations (prix jug\u00e9s chers au regard des b\u00e9n\u00e9fices attendus) et les d\u00e9penses futures en IA.<\/li>\n\n\n\n<li>La hausse des rendements des Treasuries (obligations d\u2019\u00c9tat am\u00e9ricaines) et celle du p\u00e9trole ont pes\u00e9 sur les actions en maintenant des conditions financi\u00e8res plus strictes (cr\u00e9dit plus co\u00fbteux).<\/li>\n\n\n\n<li>Le S&amp;P 500 se maintient au-dessus du support \u00e0 7\u202f691, tandis que le march\u00e9 surveille un possible rebond vers la zone de r\u00e9sistance 7\u202f700\u20137\u202f706.<\/li>\n\n\n\n<li>Les op\u00e9rateurs suivent les minutes (compte rendu) de la R\u00e9serve f\u00e9d\u00e9rale, les rendements obligataires et l\u2019app\u00e9tit pour le risque (volont\u00e9 d\u2019acheter des actifs risqu\u00e9s) pour orienter le march\u00e9.<\/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\">Le S&amp;P 500 a connu une nouvelle phase de volatilit\u00e9 (fortes variations) : les investisseurs arbitrent entre la dynamique boursi\u00e8re et la pression des valeurs technologiques, la hausse des rendements des Treasuries et l\u2019\u00e9volution des attentes sur la R\u00e9serve f\u00e9d\u00e9rale.<\/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\">Stocks pressured as US-Iran ceasefire collapses, oil climbs: The 30-year Treasury yield hit its highest level since 2007 as oil climbed and chip stocks dragged Nasdaq futures lower <a href=\"https:\/\/t.co\/3CrBDBysjv\">https:\/\/t.co\/3CrBDBysjv<\/a> <a href=\"https:\/\/t.co\/zN4gKFNz55\">pic.twitter.com\/zN4gKFNz55<\/a><\/p>&mdash; Quartz (@qz) <a href=\"https:\/\/x.com\/qz\/status\/2089690568385552743?ref_src=twsrc%5Etfw\">August 18, 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\">Les contrats \u00e0 terme (futures, prix fix\u00e9s \u00e0 l\u2019avance pour une date future) sur les actions am\u00e9ricaines se sont stabilis\u00e9s apr\u00e8s la baisse de la s\u00e9ance pr\u00e9c\u00e9dente, men\u00e9e par la technologie et les semi-conducteurs. Le S&amp;P 500 a recul\u00e9, les investisseurs revoyant l\u2019\u00e9valuation des valeurs li\u00e9es \u00e0 l\u2019IA et les perspectives de d\u00e9penses technologiques.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Ce repli intervient apr\u00e8s une p\u00e9riode de hausse des actions am\u00e9ricaines. Le march\u00e9 cherche \u00e0 savoir s\u2019il s\u2019agit d\u2019une correction (baisse temporaire) ou d\u2019un r\u00e9ajustement plus durable des attentes.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Pourquoi le S&amp;P 500 est scrut\u00e9<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Le mouvement illustre la sensibilit\u00e9 du march\u00e9 \u00e0 deux th\u00e8mes : la performance du secteur technologique et les anticipations de taux d\u2019int\u00e9r\u00eat.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Les valeurs technologiques restent un moteur du S&amp;P 500. Mais la faiblesse des semi-conducteurs interroge : les investisseurs pourraient exiger des preuves plus nettes de la hausse des b\u00e9n\u00e9fices li\u00e9e \u00e0 l\u2019IA avant d\u2019accepter des valorisations plus \u00e9lev\u00e9es.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Les rendements des Treasuries restent d\u00e9terminants. Lorsqu\u2019ils montent, le co\u00fbt de financement augmente et les hypoth\u00e8ses de valorisation changent, surtout pour les secteurs de croissance (entreprises dont la valeur d\u00e9pend beaucoup des b\u00e9n\u00e9fices futurs).<\/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 Federal Reserve will release the deliberations that led to it holding rates unchanged at its meeting in July. <a href=\"https:\/\/t.co\/mA5TsXCpHC\">https:\/\/t.co\/mA5TsXCpHC<\/a><\/p>&mdash; U.S. News &amp; World Report (@usnews) <a href=\"https:\/\/x.com\/usnews\/status\/2089410941372846282?ref_src=twsrc%5Etfw\">August 17, 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\">Les march\u00e9s suivront aussi les minutes (compte rendu) de la r\u00e9union de la R\u00e9serve f\u00e9d\u00e9rale pour mieux comprendre la trajectoire de politique mon\u00e9taire (orientation des taux et de la liquidit\u00e9) et son impact sur les actifs risqu\u00e9s (actions, etc.).<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Niveaux techniques cl\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-SP500\/\" rel=\"noopener nofollow\" target=\"_blank\"><span class=\"blue-text\">SP500 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:SP500\",  \"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 le march\u00e9 surveille<\/strong><\/td><\/tr><tr><td>7\u202f706<\/td><td>Plus haut intrajournalier r\u00e9cent et premi\u00e8re r\u00e9sistance (zone o\u00f9 l\u2019indice bloque)<\/td><\/tr><tr><td>7\u202f700<\/td><td>R\u00e9sistance psychologique (seuil \u00ab rond \u00bb souvent regard\u00e9)<\/td><\/tr><tr><td>7\u202f696<\/td><td>Zone de cotation actuelle et rep\u00e8re de court terme<\/td><\/tr><tr><td>7\u202f691<\/td><td>Plus bas de s\u00e9ance et premier support (zone o\u00f9 l\u2019indice rebondit)<\/td><\/tr><tr><td>7\u202f690<\/td><td>Support cl\u00e9 de court terme si la pression vendeuse se poursuit<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Le S&amp;P 500 \u00e9volue autour de 7\u202f696 apr\u00e8s avoir reflu\u00e9 depuis le plus haut de s\u00e9ance proche de 7\u202f706.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Un passage au-dessus de 7\u202f700 pourrait signaler une am\u00e9lioration du momentum (\u00e9lan) \u00e0 court terme. La r\u00e9sistance \u00e0 7\u202f706 deviendrait alors le niveau \u00e0 surveiller.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u00c0 la baisse, un passage sous 7\u202f691 indiquerait un retour de la pression vendeuse, avec 7\u202f690 comme prochain support.<\/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\/sp500198-1024x473.webp\" alt=\"S&amp;P 500 Sous pression, p\u00e9nalis\u00e9 par les valeurs technologiques et la hausse des rendements\" class=\"wp-image-65549\"\/><\/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>Configuration<\/strong><\/td><td class=\"has-text-align-center\" data-align=\"center\"><strong>D\u00e9clencheur<\/strong><\/td><td class=\"has-text-align-center\" data-align=\"center\"><strong>R\u00e9action possible du march\u00e9<\/strong><\/td><\/tr><tr><td><strong>Tentative de rebond<\/strong><\/td><td>Retour au-dessus de 7\u202f700<\/td><td>Le S&amp;P 500 pourrait retester la r\u00e9sistance \u00e0 7\u202f706<\/td><\/tr><tr><td><strong>Rebond haussier<\/strong><\/td><td>Franchissement de 7\u202f706<\/td><td>Le momentum pourrait s\u2019am\u00e9liorer, les acheteurs reprenant la main \u00e0 court terme<\/td><\/tr><tr><td><strong>Consolidation en range<\/strong><\/td><td>Maintien entre 7\u202f691 et 7\u202f706<\/td><td>L\u2019indice pourrait \u00e9voluer dans un couloir, le temps que le march\u00e9 se positionne<\/td><\/tr><tr><td><strong>Rupture baissi\u00e8re<\/strong><\/td><td>Passage sous 7\u202f691<\/td><td>La pression vendeuse pourrait s\u2019intensifier vers des supports plus bas<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Le <strong>sc\u00e9nario haussier<\/strong> repose sur un retour au-dessus de <strong>7\u202f700<\/strong>, puis un franchissement de <strong>7\u202f706<\/strong>, ce qui signalerait un mieux du momentum \u00e0 court terme.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Le <strong>sc\u00e9nario baissier<\/strong> se met en place sous <strong>7\u202f691<\/strong> : cela sugg\u00e8re que les vendeurs gardent l\u2019avantage et augmente le risque d\u2019une baisse suppl\u00e9mentaire.<\/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\u2019avis de l\u2019auteur au moment de la r\u00e9daction et ne constituent pas un conseil en investissement ni une recommandation officielle de VT Markets. Faites vos propres analyses et g\u00e9rez votre risque.<\/em><\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Trader des CFD sur le S&amp;P 500 avec VT Markets<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Le S&amp;P 500 reste tr\u00e8s suivi, alors que les op\u00e9rateurs \u00e9valuent l\u2019\u00e9volution des valeurs technologiques, les attentes sur la politique de la R\u00e9serve f\u00e9d\u00e9rale et le climat de march\u00e9.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Avec VT Markets, il est possible de n\u00e9gocier des CFD (contrats sur la diff\u00e9rence, produits permettant de miser sur la hausse ou la baisse sans d\u00e9tenir l\u2019action) sur le S&amp;P 500, ainsi que d\u2019autres indices, le forex (march\u00e9 des changes), les mati\u00e8res premi\u00e8res et des CFD sur actions, via une seule plateforme.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Pourquoi trader des CFD sur le S&amp;P 500 avec VT Markets ?<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Les CFD sur le S&amp;P 500 permettent de suivre les variations de l\u2019un des indices actions les plus suivis au monde sans poss\u00e9der directement les actions qui le composent.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Cette souplesse aide \u00e0 r\u00e9agir aux statistiques \u00e9conomiques, aux r\u00e9sultats d\u2019entreprises, aux tendances technologiques et aux d\u00e9cisions des banques centrales.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">VT Markets propose des outils de march\u00e9 pour analyser les mouvements de prix, suivre les niveaux cl\u00e9s et s\u2019adapter aux conditions de march\u00e9.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u00c0 surveiller ensuite<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Les prochains moteurs pour le S&amp;P 500 restent les signaux de politique mon\u00e9taire, la tenue du secteur technologique et l\u2019app\u00e9tit pour le risque.<\/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>Minutes de la R\u00e9serve f\u00e9d\u00e9rale :<\/strong> les investisseurs analyseront les \u00e9changes de la r\u00e9union de juillet pour affiner les attentes de taux.<\/li>\n\n\n\n<li><strong>Technologie et semi-conducteurs :<\/strong> une poursuite de la baisse ou une stabilisation des valeurs li\u00e9es \u00e0 l\u2019IA peut peser ou soutenir l\u2019indice.<\/li>\n\n\n\n<li><strong>Rendements des Treasuries :<\/strong> les mouvements du march\u00e9 obligataire peuvent continuer d\u2019influencer la valorisation des actions.<\/li>\n\n\n\n<li><strong>R\u00e9sultats d\u2019entreprises :<\/strong> le march\u00e9 v\u00e9rifiera si les publications justifient les prix actuels.<\/li>\n\n\n\n<li><strong>Climat de risque :<\/strong> le p\u00e9trole et la g\u00e9opolitique peuvent influencer la demande d\u2019actions.<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">D\u2019un point de vue technique, le march\u00e9 surveille un retour au-dessus de 7\u202f700. Le support cl\u00e9 de court terme reste 7\u202f691.<\/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 le S&amp;P 500 a-t-il \u00e9t\u00e9 sous pression ?<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">L\u2019indice a recul\u00e9 avec la baisse des valeurs technologiques et des semi-conducteurs, tandis que la hausse des rendements des Treasuries (obligations d\u2019\u00c9tat am\u00e9ricaines) a pes\u00e9 sur la valorisation des actions.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Pourquoi les actions li\u00e9es \u00e0 l\u2019IA influencent-elles le S&amp;P 500 ?<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">De grandes entreprises technologiques expos\u00e9es \u00e0 l\u2019IA p\u00e8sent fortement dans l\u2019indice. Les doutes sur les d\u00e9penses en IA et les gains futurs peuvent changer le sentiment des investisseurs.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Comment les rendements des Treasuries influencent-ils le S&amp;P 500 ?<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Des rendements plus \u00e9lev\u00e9s rench\u00e9rissent le financement et modifient la fa\u00e7on dont le march\u00e9 valorise les b\u00e9n\u00e9fices futurs, surtout pour les valeurs de croissance.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Quels niveaux cl\u00e9s du S&amp;P 500 surveiller ?<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Le march\u00e9 surveille 7\u202f700 et 7\u202f706 en cas de rebond, tandis que 7\u202f691 et 7\u202f690 restent des supports importants \u00e0 court terme.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><strong>Qu\u2019est-ce qui pourrait soutenir le S&amp;P 500 ?<\/strong><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Un meilleur climat sur la technologie, des indications plus claires de la R\u00e9serve f\u00e9d\u00e9rale et des attentes de b\u00e9n\u00e9fices plus solides pourraient stabiliser le march\u00e9.<\/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>Attention aux faux semblants : le S&#038;P 500 se stabilise apr\u00e8s le recul tech. Semi-conducteurs\/IA sous pression, rendements US et p\u00e9trole durcissent les conditions. Support 7\u202f691, rebond possible vers 7\u202f700-7\u202f706, minutes de la Fed.<\/p>\n","protected":false},"author":87,"featured_media":52334,"comment_status":"","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[14],"tags":[],"class_list":["post-52335","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=\"Attention aux faux semblants : le S&amp;P 500 se stabilise apr\u00e8s le recul tech. Semi-conducteurs\/IA sous pression, rendements US et p\u00e9trole durcissent les conditions. 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