{"id":51906,"date":"2026-08-03T10:21:42","date_gmt":"2026-08-03T10:21:42","guid":{"rendered":"https:\/\/www.vtmarkets.com\/fr-eu\/uncategorized\/les-etats-unis-soutiennent-lintervention-du-japon-sur-le-yen-tandis-que-des-responsables-soulignent-une-marge-de-manoeuvre-limitee-pour-de-nouvelles-actions\/"},"modified":"2026-08-03T10:21:42","modified_gmt":"2026-08-03T10:21:42","slug":"les-etats-unis-soutiennent-lintervention-du-japon-sur-le-yen-tandis-que-des-responsables-soulignent-une-marge-de-manoeuvre-limitee-pour-de-nouvelles-actions","status":"publish","type":"post","link":"https:\/\/www.vtmarkets.com\/fr-eu\/live-updates\/les-etats-unis-soutiennent-lintervention-du-japon-sur-le-yen-tandis-que-des-responsables-soulignent-une-marge-de-manoeuvre-limitee-pour-de-nouvelles-actions\/","title":{"rendered":"Les \u00c9tats-Unis soutiennent l\u2019intervention du Japon sur le yen, tandis que des responsables soulignent une marge de man\u0153uvre limit\u00e9e pour de nouvelles actions"},"content":{"rendered":"<p>La confirmation officielle indique que les \u00c9tats-Unis ont soutenu l\u2019intervention du Japon visant \u00e0 renforcer le yen, la premi\u00e8re action coordonn\u00e9e de ce type depuis de nombreuses ann\u00e9es. Des responsables ont indiqu\u00e9 que d\u2019autres op\u00e9rations restaient possibles, m\u00eame si toute r\u00e9p\u00e9tition se heurterait \u00e0 des contraintes li\u00e9es aux r\u00e8gles du FMI, et le mouvement de jeudi a \u00e9t\u00e9 estim\u00e9 comme la plus importante intervention jamais r\u00e9alis\u00e9e sur une seule s\u00e9ance. Le rapport ajoute \u00e9galement que, si le Japon intervient de nouveau dans les prochains jours, le minist\u00e8re des Finances aura, de facto, \u00e9puis\u00e9 ses options jusqu\u2019en novembre afin de conserver ce statut.<\/p>\n<p>En mati\u00e8re de valorisation, le yen est d\u00e9crit comme fortement sous-\u00e9valu\u00e9 selon la parit\u00e9 de pouvoir d\u2019achat (PPA) de l\u2019OCDE, et il serait actuellement sous-\u00e9valu\u00e9 de plus de 60% face au dollar. \u00c0 titre de comparaison, l\u2019euro serait sous-\u00e9valu\u00e9 d\u2019environ 29%. La note met en avant les Treasuries am\u00e9ricains et les JGB (obligations d\u2019\u00c9tat japonaises) comme \u00e9l\u00e9ments du m\u00e9canisme de transmission, avec l\u2019hypoth\u00e8se que le Japon pourrait vendre des Treasuries am\u00e9ricains ou recourir \u00e0 la facilit\u00e9 de repo de la Fed en apportant des Treasuries en collat\u00e9ral contre du cash afin de se procurer des dollars pour intervenir.<\/p>\n<h3>Valorisation du yen et impact des interventions de march\u00e9<\/h3>\n<p>Nous devons reconna\u00eetre que le yen japonais reste fondamentalement bon march\u00e9, s\u2019\u00e9changeant \u00e0 des niveaux historiquement sous-\u00e9valu\u00e9s de plus de 40% face au dollar sur la base de la parit\u00e9 de pouvoir d\u2019achat. Malgr\u00e9 les fluctuations r\u00e9centes, la menace d\u2019une intervention de change conjointe des \u00c9tats-Unis et du Japon est en train de modifier la fa\u00e7on dont nous valorisons les options et les contrats \u00e0 terme sur devises. Les traders de d\u00e9riv\u00e9s doivent se pr\u00e9parer \u00e0 des pics de volatilit\u00e9 soudains et d\u2019ampleur \u00e9lev\u00e9e, plut\u00f4t que de parier sur une tendance r\u00e9guli\u00e8re et pr\u00e9visible.<\/p>\n<h3>Strat\u00e9gie de trading dans un environnement JPY volatil<\/h3>\n<p>Nous recommandons aux traders d\u2019acheter des options d\u2019achat (calls) JPY hors de la monnaie (out-of-the-money) \u00e0 courte \u00e9ch\u00e9ance afin de se couvrir contre des rallies abrupts pilot\u00e9s par les autorit\u00e9s. \u00c9tant donn\u00e9 que la Banque du Japon a maintenu un biais plus restrictif apr\u00e8s avoir relev\u00e9 son taux directeur \u00e0 0,25%, le carry trade n\u2019est plus un pari unidirectionnel sans risque. Le recours \u00e0 des strat\u00e9gies de volatilit\u00e9, comme les straddles, peut nous aider \u00e0 capter ces mouvements brusques sans avoir \u00e0 anticiper pr\u00e9cis\u00e9ment le calendrier de la prochaine intervention.<\/p>\n<p>Nous devons \u00e9galement surveiller de pr\u00e8s le march\u00e9 des Treasuries, car une utilisation potentielle par le Japon de la facilit\u00e9 de repo de la R\u00e9serve f\u00e9d\u00e9rale limite la pression vendeuse directe sur les obligations am\u00e9ricaines. Le suivi des donn\u00e9es du \u00ab foreign repo pool \u00bb de la Fed, dont l\u2019encours a souvent fluctu\u00e9 autour de 350 milliards de dollars, nous donnera des indications pr\u00e9coces sur les \u00e9volutions de liquidit\u00e9. Si ces encours reculent rapidement, cela sugg\u00e8re que le minist\u00e8re des Finances se pr\u00e9pare activement \u00e0 \u00e9changer du collat\u00e9ral contre du cash afin de soutenir le yen.<\/p>\n<p>Les contraintes de politique \u00e9conomique limitant la fr\u00e9quence \u00e0 laquelle le Japon peut intervenir sur le march\u00e9 avant la fin de l\u2019ann\u00e9e, la fen\u00eatre pour ces op\u00e9rations est tr\u00e8s restreinte. Nous conseillons de r\u00e9duire l\u2019effet de levier sur les positions vendeuses \u00ab nues \u00bb sur le JPY dans les semaines \u00e0 venir afin d\u2019\u00e9viter d\u2019\u00eatre pris dans des pi\u00e8ges de liquidit\u00e9 soudains. Prot\u00e9ger le capital via des structures optionnelles, plut\u00f4t que via du spot, sera notre option la plus s\u00fbre dans cet environnement \u00e0 forts enjeux.<\/p>\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-eu\/trade-now\/\">ici<\/a> pour cr\u00e9er votre compte r\u00e9el VT Markets.<\/b>\n\n<\/p>","protected":false},"excerpt":{"rendered":"<p>Coup de tonnerre sur le FX : Washington a appuy\u00e9 l\u2019intervention japonaise, record sur une s\u00e9ance. Yen tr\u00e8s sous-\u00e9valu\u00e9 (PPA) ; nouvelles op\u00e9rations possibles mais contraintes FMI. Volatilit\u00e9 attendue, priorit\u00e9 aux options.<\/p>\n","protected":false},"author":87,"featured_media":49626,"comment_status":"","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[24],"tags":[],"class_list":["post-51906","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 tonnerre sur le FX : Washington a appuy\u00e9 l\u2019intervention japonaise, record sur une s\u00e9ance. Yen tr\u00e8s sous-\u00e9valu\u00e9 (PPA) ; nouvelles op\u00e9rations possibles mais contraintes FMI. 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