{"id":15833,"date":"2026-03-10T08:02:16","date_gmt":"2026-03-10T07:02:16","guid":{"rendered":"https:\/\/www.forbes.be\/fr\/guerre-iran-indice-peur-wall-street\/"},"modified":"2026-03-10T08:02:16","modified_gmt":"2026-03-10T07:02:16","slug":"guerre-iran-indice-peur-wall-street","status":"publish","type":"post","link":"https:\/\/www.forbes.be\/fr\/guerre-iran-indice-peur-wall-street\/","title":{"rendered":"Les actions chutent alors que l&rsquo;indice de peur de Wall Street atteint un sommet r\u00e9cent sous la pression de la guerre en Iran"},"content":{"rendered":"<h2>Point essentiel<\/h2>\n<p>L&rsquo;indice de volatilit\u00e9 Cboe, consid\u00e9r\u00e9 comme le \u00ab\u00a0barom\u00e8tre de la peur\u00a0\u00bb de Wall Street, a augment\u00e9 lundi, atteignant presque son niveau le plus \u00e9lev\u00e9 en pr\u00e8s d&rsquo;un an. Cette hausse est aliment\u00e9e par les inqui\u00e9tudes persistantes concernant le conflit en Iran, qui ont provoqu\u00e9 une nouvelle vente massive sur les principaux indices boursiers.<\/p>\n<h2>Faits cl\u00e9s<\/h2>\n<ul>\n<li>L&rsquo;indice de volatilit\u00e9 Cboe, ou VIX, a augment\u00e9 de plus de 7% au cours des derni\u00e8res 24 heures et de pr\u00e8s de 57% au cours de la semaine pass\u00e9e, atteignant son plus haut niveau depuis avril 2025, peu apr\u00e8s que le pr\u00e9sident Donald Trump ait annonc\u00e9 ses tarifs \u00ab\u00a0Jour de la lib\u00e9ration\u00a0\u00bb.<\/li>\n<li>Le VIX suit la volatilit\u00e9 implicite sur les 30 prochains jours de l&rsquo;indice S&#038;P 500, et les deux ont tendance \u00e0 \u00e9voluer en sens inverse : lorsque la volatilit\u00e9 implicite augmente, le VIX a tendance \u00e0 monter, \u00e9largissant ainsi la fourchette attendue des actions, et lorsque la volatilit\u00e9 implicite diminue, le VIX baisse et la fourchette projet\u00e9e des actions se r\u00e9duit.<\/li>\n<li>Le Dow Jones Industrial Average a chut\u00e9 de 683 points, soit 1,4%, \u00e0 l&rsquo;ouverture lundi, avec d&rsquo;autres pertes pour le S&#038;P 500 (en baisse de 1,3%) et le Nasdaq (1,3%) apr\u00e8s que chaque indice ait perdu respectivement 3%, 2% et 1,2% la semaine derni\u00e8re.<\/li>\n<li>Meta, Amazon et Tesla, repr\u00e9sentant ensemble 9% du S&#038;P 500, ont chut\u00e9 de 2%, 1,4% et 1,1% respectivement, en t\u00eate des pertes de l&rsquo;indice, suivis de Marvell Technology (4,1%), Comcast (2,1%) et PayPal (2%).<\/li>\n<li>Nike (2,3%), Boeing (2,2%), American Express (2,2%), Home Depot (2%), Goldman Sachs (1,7%) et JPMorgan Chase (1,5%) ont \u00e9t\u00e9 parmi les plus mauvais r\u00e9sultats du Dow.<\/li>\n<li>La baisse des actions a \u00e9t\u00e9 aliment\u00e9e par une nouvelle hausse des prix du p\u00e9trole : le West Texas Intermediate, la r\u00e9f\u00e9rence am\u00e9ricaine, a bri\u00e8vement augment\u00e9 \u00e0 119,43 dollars, tandis que le Brent Crude, la r\u00e9f\u00e9rence internationale, a bondi \u00e0 119,46 dollars, le niveau le plus \u00e9lev\u00e9 pour l&rsquo;un ou l&rsquo;autre indice depuis 2022.<\/li>\n<\/ul>\n<h2>\u00c0 surveiller<\/h2>\n<p>La r\u00e9action des march\u00e9s face aux mises \u00e0 jour sur l&rsquo;inflation. Le Bureau des statistiques du travail publiera les donn\u00e9es de l&rsquo;indice des prix \u00e0 la consommation pour f\u00e9vrier mercredi, avec une inflation pr\u00e9vue en hausse de 2,4% ce mois, selon les estimations consensuelles des analystes compil\u00e9es par FactSet. Les donn\u00e9es de janvier sur les d\u00e9penses de consommation personnelles, la mesure de l&rsquo;inflation pr\u00e9f\u00e9r\u00e9e de la R\u00e9serve f\u00e9d\u00e9rale, seront rapport\u00e9es par le Bureau d&rsquo;analyse \u00e9conomique vendredi.<\/p>\n<h2>Contexte cl\u00e9<\/h2>\n<p>La hausse des prix du p\u00e9trole et du gaz a aliment\u00e9 les craintes d&rsquo;une acc\u00e9l\u00e9ration de l&rsquo;inflation, poussant potentiellement la R\u00e9serve f\u00e9d\u00e9rale \u00e0 s&rsquo;\u00e9loigner d&rsquo;une r\u00e9duction des taux d&rsquo;int\u00e9r\u00eat. Saad al-Kaabi, ministre de l&rsquo;\u00c9nergie du Qatar, a d\u00e9clar\u00e9 au Financial Times la semaine derni\u00e8re que les prix du brut pourraient atteindre 150 dollars le baril si les tankers ne peuvent traverser le d\u00e9troit d&rsquo;Ormuz, par lequel transite plus de 20% du flux p\u00e9trolier mondial quotidien. Cela pourrait \u00ab\u00a0an\u00e9antir les \u00e9conomies du monde\u00a0\u00bb, a indiqu\u00e9 al-Kaabi. La hausse des prix du p\u00e9trole pourrait \u00ab\u00a0d\u00e9clencher une nouvelle vague d&rsquo;inflation\u00a0\u00bb, selon Ellen Zentner, strat\u00e9giste en chef chez Morgan Stanley Wealth Management, ce qui inciterait probablement les responsables de la Fed \u00e0 \u00ab\u00a0rester sur la touche\u00a0\u00bb. Les responsables de la Fed, Neel Kashkari et Beth Hammack, ont tent\u00e9 de dissiper les inqui\u00e9tudes selon lesquelles le conflit en Iran perturberait bient\u00f4t l&rsquo;\u00e9conomie am\u00e9ricaine, sugg\u00e9rant qu&rsquo;il \u00e9tait \u00ab\u00a0trop t\u00f4t\u00a0\u00bb pour dire comment l&rsquo;inflation ou la politique fiscale se transformerait.<\/p>\n<h2>Anecdote<\/h2>\n<p>Bien que les prix du p\u00e9trole fassent grimper les co\u00fbts \u00e9nerg\u00e9tiques, les Am\u00e9ricains ont d\u00e9j\u00e0 pay\u00e9 plus pour leurs factures de services publics au cours de l&rsquo;ann\u00e9e derni\u00e8re : les prix de l&rsquo;\u00e9lectricit\u00e9 ont augment\u00e9 de 6,3% sur 12 mois se terminant en janvier 2026, plus du double du taux d&rsquo;inflation g\u00e9n\u00e9ral de 2,5%. Le co\u00fbt moyen de l&rsquo;\u00e9lectricit\u00e9 r\u00e9sidentielle aux \u00c9tats-Unis est pass\u00e9 de juste en dessous de 16 cents par kilowattheure en janvier 2025 \u00e0 17,78 cents par kilowattheure en novembre, une hausse de 11,5% apr\u00e8s avoir augment\u00e9 de seulement 3,4% de 2024 \u00e0 2025. Goldman Sachs a projet\u00e9 le mois dernier que les prix de l&rsquo;\u00e9lectricit\u00e9 augmenteraient de 6% de plus jusqu&rsquo;en 2027 avant de ralentir \u00e0 3% en 2028.<\/p>\n<p> Cet article a \u00e9t\u00e9 \u00e9crit par Ty Roush et traduit par Forbes.be. <\/p>\n<p><a href=\"https:\/\/www.forbes.com\/sites\/tylerroush\/2026\/03\/09\/wall-streets-fear-gauge-hits-recent-high-stocks-meta-tesla-more-tumble-on-iran-war-pressure\/\">Cet article a \u00e9t\u00e9 initialement publi\u00e9 sur Forbes.com<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Sous la pression du conflit en Iran, le &lsquo;fear gauge&rsquo; de Wall Street a atteint un niveau record, entra\u00eenant une baisse des actions de Meta, Tesla et d&rsquo;autres grandes entreprises.<\/p>\n","protected":false},"author":28,"featured_media":15832,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"inline_featured_image":false,"footnotes":""},"categories":[1],"tags":[],"class_list":{"0":"post-15833","1":"post","2":"type-post","3":"status-publish","4":"format-standard","5":"has-post-thumbnail","7":"category-actualite"},"acf":[],"_yoast_wpseo_title":"Les actions chutent alors que l'indice de peur de Wall Street atteint un sommet r\u00e9cent sous la pression de la guerre en Iran","_yoast_wpseo_metadesc":"Les prix du p\u00e9trole grimpent \u00e0 des niveaux record, accentuant la volatilit\u00e9 boursi\u00e8re.","auteur_traducteur":"Ty Roush","yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.4 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Les actions chutent alors que l&#039;indice de peur de Wall Street atteint un sommet r\u00e9cent sous la 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