{"id":51643,"date":"2026-08-03T21:55:13","date_gmt":"2026-08-03T21:55:13","guid":{"rendered":"https:\/\/www.vtmarkets.com\/fr-latam\/uncategorized\/la-livre-sterling-recule-loptimisme-autour-de-lism-americain-soutient-le-dollar-la-contrainte-budgetaire-au-royaume-uni-et-la-baisse-du-petrole-pesent\/"},"modified":"2026-08-03T21:55:13","modified_gmt":"2026-08-03T21:55:13","slug":"la-livre-sterling-recule-loptimisme-autour-de-lism-americain-soutient-le-dollar-la-contrainte-budgetaire-au-royaume-uni-et-la-baisse-du-petrole-pesent","status":"publish","type":"post","link":"https:\/\/www.vtmarkets.com\/fr-latam\/live-updates\/la-livre-sterling-recule-loptimisme-autour-de-lism-americain-soutient-le-dollar-la-contrainte-budgetaire-au-royaume-uni-et-la-baisse-du-petrole-pesent\/","title":{"rendered":"La livre sterling recule, l\u2019optimisme autour de l\u2019ISM am\u00e9ricain soutient le dollar ; la contrainte budg\u00e9taire au Royaume-Uni et la baisse du p\u00e9trole p\u00e8sent"},"content":{"rendered":"<p>La livre sterling a recul\u00e9 lundi, le GBP\/USD c\u00e9dant environ 0,27 % \u00e0 1,3439 apr\u00e8s avoir touch\u00e9 un sommet intrajournalier \u00e0 1,3506. Le dollar am\u00e9ricain s\u2019est montr\u00e9 plus ferme, l\u2019ISM Manufacturing PMI de juillet \u00e9tant remont\u00e9 \u00e0 55,6 contre 53,3, au-dessus des attentes \u00e0 54, tandis que la composante emploi s\u2019est redress\u00e9e pour la premi\u00e8re fois depuis 2023 et que l\u2019indice des prix pay\u00e9s a signal\u00e9 des co\u00fbts d\u2019intrants \u00e9lev\u00e9s. L\u2019indice du dollar, le DXY, a gagn\u00e9 0,14 % \u00e0 99,94, apr\u00e8s deux jours d\u2019intervention sur le FX visant \u00e0 soutenir le yen japonais (JPY), selon les autorit\u00e9s japonaises et am\u00e9ricaines.<\/p>\n<p>Au Royaume-Uni, la politique budg\u00e9taire a domin\u00e9, le chancelier John Healey exhortant les ministres \u00e0 r\u00e9duire les budgets des minist\u00e8res tandis que le nouveau gouvernement cherchait \u00e0 respecter les promesses de d\u00e9penses d\u2019avant-\u00e9lection sous le Premier ministre Andy Burnham. Le risque g\u00e9opolitique a \u00e9galement \u00e9volu\u00e9 apr\u00e8s que le pr\u00e9sident Donald Trump a arr\u00eat\u00e9 les attaques contre l\u2019Iran ; CBS News a indiqu\u00e9 qu\u2019aucune nouvelle n\u00e9gociation n\u2019\u00e9tait pr\u00e9vue, les \u00e9changes se poursuivant via des m\u00e9diateurs. Le p\u00e9trole a chut\u00e9, le WTI perdant plus de 8,40 % et repassant sous 80 dollars le baril, tandis que les anticipations de taux se sont d\u00e9tendues : la Fed int\u00e8gre 22 points de base de resserrement et la Banque d\u2019Angleterre (BoE) une hausse d\u2019ici la fin de l\u2019ann\u00e9e. Sur le graphique, le GBP\/USD \u00e9voluait \u00e0 1,3428 au-dessus d\u2019un support de moyenne mobile (SMA) proche de 1,3363 ; le RSI s\u2019\u00e9tablissait \u00e0 54,5, avec des r\u00e9sistances \u00e0 1,3449 et 1,3551.<\/p>\n<h3>Niveaux techniques et macro cl\u00e9s pour les traders GBP\/USD<\/h3>\n<p>Nous sugg\u00e9rons aux traders de produits d\u00e9riv\u00e9s de surveiller de pr\u00e8s le support \u00e0 1,3363 sur le GBP\/USD, o\u00f9 convergent les moyennes mobiles cl\u00e9s \u00e0 50, 100 et 200 jours. Apr\u00e8s un ISM Manufacturing PMI am\u00e9ricain \u00e0 55,6 sup\u00e9rieur aux attentes, le dollar a imm\u00e9diatement trouv\u00e9 un soutien. Historiquement, lorsque l\u2019ISM PMI d\u00e9passe les anticipations avec un tel \u00e9cart, l\u2019indice du dollar (DXY) tend \u00e0 prolonger son mouvement haussier pendant plusieurs jours.<\/p>\n<p>En observant les tendances historiques des devises, des surprises macro\u00e9conomiques similaires ont souvent d\u00e9clench\u00e9 une baisse de court terme de 1,2 % \u00e0 1,8 % de la livre sur une fen\u00eatre de deux semaines. Pour tirer parti de cette glissade potentielle, nous recommandons de recourir \u00e0 des bear put spreads sur le GBP\/USD avec un strike visant 1,3300. Cette strat\u00e9gie limite le risque tout en nous positionnant pour profiter d\u2019une cassure sous le support crucial des moyennes mobiles.<\/p>\n<h3>Strat\u00e9gies dans un contexte de volatilit\u00e9 et d\u2019\u00e9carts de taux<\/h3>\n<p>Alors que le brut West Texas Intermediate (WTI) est pass\u00e9 sous 80 dollars le baril apr\u00e8s une chute de 8,4 %, la volatilit\u00e9 des march\u00e9s li\u00e9e aux mati\u00e8res premi\u00e8res \u00e9volue. La volatilit\u00e9 implicite des options GBP\/USD \u00e0 un mois se traite actuellement autour d\u2019un niveau relativement bas de 7,2 %, rendant les primes d\u2019options attractives pour les acheteurs. Nous pouvons exploiter ces primes peu co\u00fbteuses en achetant des options de vente (puts) vanille afin de couvrir notre portefeuille contre de nouveaux risques li\u00e9s \u00e0 la politique budg\u00e9taire britannique.<\/p>\n<p>Le Relative Strength Index (RSI) \u00e0 54,5 indique que la paire est loin d\u2019\u00eatre en situation de survente, laissant une marge importante pour une correction baissi\u00e8re plus profonde. Par ailleurs, avec une Fed attendue sur un resserrement de 22 points de base, l\u2019\u00e9cart de taux se r\u00e9oriente \u00e0 nouveau en faveur du billet vert. Nous devons suivre de pr\u00e8s la ligne de r\u00e9sistance \u00e0 1,3449, car tout \u00e9chec au-dessus de ce niveau constituera notre signal pour accro\u00eetre les positions \u00e0 delta n\u00e9gatif.<\/p>\n\n\n\r\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\r\n<\/p>","protected":false},"excerpt":{"rendered":"<p>Coup de froid sur la livre : GBP\/USD recule \u00e0 1,3439, p\u00e9nalis\u00e9 par un dollar raffermi apr\u00e8s un ISM \u00e0 55,6. Budgets UK sous pression, p\u00e9trole en chute, options bon march\u00e9 : vigilance 1,3363.<\/p>\n","protected":false},"author":87,"featured_media":49265,"comment_status":"","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[10],"tags":[],"class_list":["post-51643","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-live-updates"],"acf":{"acf_article_selection_author":null},"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO Pro 5.0.1.1 - aioseo.com -->\n\t<meta name=\"description\" content=\"Coup de froid sur la livre : GBP\/USD recule \u00e0 1,3439, p\u00e9nalis\u00e9 par un dollar raffermi apr\u00e8s un ISM \u00e0 55,6. 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