{"id":51819,"date":"2026-07-31T18:51:55","date_gmt":"2026-07-31T18:51:55","guid":{"rendered":"https:\/\/www.vtmarkets.com\/fr-eu\/uncategorized\/usd-jpy-recule-sur-des-soupcons-dintervention-du-japon-et-une-banque-du-japon-plus-faucon-la-volatilite-reste-elevee\/"},"modified":"2026-07-31T18:51:55","modified_gmt":"2026-07-31T18:51:55","slug":"usd-jpy-recule-sur-des-soupcons-dintervention-du-japon-et-une-banque-du-japon-plus-faucon-la-volatilite-reste-elevee","status":"publish","type":"post","link":"https:\/\/www.vtmarkets.com\/fr-eu\/live-updates\/usd-jpy-recule-sur-des-soupcons-dintervention-du-japon-et-une-banque-du-japon-plus-faucon-la-volatilite-reste-elevee\/","title":{"rendered":"USD\/JPY recule sur des soup\u00e7ons d\u2019intervention du Japon et une Banque du Japon plus \u00ab faucon \u00bb, la volatilit\u00e9 reste \u00e9lev\u00e9e"},"content":{"rendered":"<p>L\u2019USD\/JPY a nettement chut\u00e9 vers la zone des 159,50 vendredi, la paire s\u2019\u00e9changeant autour de 159,12, le yen s\u2019\u00e9tant renforc\u00e9 apr\u00e8s des informations faisant \u00e9tat d\u2019une intervention japonaise sur le march\u00e9 des changes et un message de la Banque du Japon (BoJ) au ton plus restrictif. Le Japon aurait achet\u00e9 du yen et vendu des dollars am\u00e9ricains apr\u00e8s que le taux de change a atteint des sommets pluri-d\u00e9cennaux, d\u00e9clenchant un repli brutal alors que la volatilit\u00e9 est rest\u00e9e \u00e9lev\u00e9e. La BoJ a maintenu son taux directeur \u00e0 court terme \u00e0 1,00%, comme attendu, une d\u00e9cision approuv\u00e9e par 8 voix contre 1, Hajime Takata s\u2019\u00e9tant oppos\u00e9 en faveur d\u2019une hausse \u00e0 1,25% en raison des risques d\u2019inflation \u00e0 la hausse li\u00e9s \u00e0 des chocs de demande externe et \u00e0 l\u2019\u00e9volution des conditions financi\u00e8res mondiales.<\/p>\n\n<p>La banque centrale a r\u00e9affirm\u00e9 qu\u2019elle continuerait \u00e0 relever le co\u00fbt de l\u2019emprunt si l\u2019activit\u00e9, l\u2019inflation et les conditions financi\u00e8res suivent ses projections, tandis que le gouverneur Kazuo Ueda a indiqu\u00e9 qu\u2019elle pourrait acc\u00e9l\u00e9rer le rythme des hausses afin d\u2019\u00e9viter de se laisser distancer par l\u2019inflation. C\u00f4t\u00e9 dollar, la g\u00e9opolitique a envoy\u00e9 des signaux contrast\u00e9s : le pr\u00e9sident am\u00e9ricain Donald Trump a \u00e9voqu\u00e9 un accord visant un d\u00e9sarmement progressif du Hamas et un retrait isra\u00e9lien \u00e0 terme de Gaza, mais le Kowe\u00eft a indiqu\u00e9 que ses d\u00e9fenses a\u00e9riennes avaient intercept\u00e9 des drones iraniens, et Trump a d\u00e9clar\u00e9 que les \u00c9tats-Unis \u00ab frappaient durement l\u2019Iran \u00bb. Sur le plan technique, la paire demeure sous les moyennes mobiles simples (SMA) \u00e0 20 et 100 p\u00e9riodes \u00e0 162,31 et 162,62, fait face \u00e0 des r\u00e9sistances \u00e0 159,92 puis 160,57, et affiche un RSI proche de 25 ; les supports se situent \u00e0 158,91 et 158,56.<\/p>\n\n<h3>Strat\u00e9gies sur options dans un contexte de renforcement du yen et de volatilit\u00e9 de march\u00e9<\/h3>\n\n<p>Alors que l\u2019USD\/JPY \u00e9volue pr\u00e8s de 159,12 avec un RSI survendu \u00e0 25, nous conseillons aux op\u00e9rateurs sur d\u00e9riv\u00e9s d\u2019\u00e9viter de tenter d\u2019attraper un couteau qui tombe via des positions au comptant et de se tourner plut\u00f4t vers le march\u00e9 des options. Compte tenu de la forte dynamique baissi\u00e8re sous la moyenne mobile \u00e0 20 p\u00e9riodes \u00e0 162,31, l\u2019achat de puts \u00e0 courte maturit\u00e9 appara\u00eet tr\u00e8s attractif pour capter une poursuite de la baisse. Nous devrions viser les niveaux de support imm\u00e9diats \u00e0 158,91 et 158,56 pour ces strat\u00e9gies baissi\u00e8res.<\/p>\n\n<p>Les autorit\u00e9s japonaises ont un historique de d\u00e9fense agressive, ayant d\u00e9pens\u00e9 un record de 9.800 milliards de yens en un mois en 2024, puis encore 5.500 milliards de yens peu apr\u00e8s, afin de soutenir la devise. Ce pr\u00e9c\u00e9dent historique sugg\u00e8re que nous devons nous pr\u00e9parer \u00e0 des \u00ab trous de liquidit\u00e9 \u00bb soudains et volatils si les autorit\u00e9s interviennent \u00e0 nouveau. Pour se prot\u00e9ger contre ces mouvements erratiques, nous recommandons d\u2019utiliser des puts knock-out ou des spreads de puts baissiers afin de limiter le co\u00fbt de la prime tout en encadrant le risque maximal.<\/p>\n\n<h3>Environnement macro\u00e9conomique et impact g\u00e9opolitique sur les tactiques de trading<\/h3>\n\n<p>Avec une BoJ qui maintient ses taux \u00e0 1,00% tout en affichant une forte volont\u00e9 de poursuivre les rel\u00e8vements, l\u2019\u00e9cart de rendement entre les \u00c9tats-Unis et le Japon se r\u00e9duit progressivement. Nous pouvons tirer parti de cet environnement macro en mutation via des spreads calendaires, en anticipant une hausse de la volatilit\u00e9 implicite sur les maturit\u00e9s longues \u00e0 mesure que la BoJ, contrainte de rattraper l\u2019inflation, deviendra une r\u00e9alit\u00e9. Ce virage restrictif fait des calls yen de maturit\u00e9 longue (puts USD\/JPY) une position c\u0153ur de portefeuille fondamentalement coh\u00e9rente pour les prochaines semaines.<\/p>\n\n<p>Les d\u00e9veloppements g\u00e9opolitiques, notamment l\u2019\u00e9ventuel accord de d\u00e9sarmement \u00e0 Gaza et les tensions persistantes avec l\u2019Iran, rendent les flux de valeur refuge tr\u00e8s impr\u00e9visibles. Cette incertitude pousse g\u00e9n\u00e9ralement la volatilit\u00e9 implicite \u00e0 une semaine de l\u2019USD\/JPY nettement au-dessus de sa moyenne historique de 8%, rendant les achats d\u2019options \u00ab directionnels \u00bb co\u00fbteux. Pour contrer cet environnement de forte volatilit\u00e9, nous devrions privil\u00e9gier des spreads de cr\u00e9dit ou des strat\u00e9gies d\u2019\u00e9criture en ratio, permettant d\u2019encaisser des primes en attendant une tendance directionnelle plus claire.<\/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>Chute surprise de l\u2019USD\/JPY vers 159 : rumeurs d\u2019intervention japonaise et BoJ plus restrictive dopent le yen. Volatilit\u00e9 \u00e9lev\u00e9e, RSI survendu. Privil\u00e9gier options (puts, spreads) face aux risques g\u00e9opolitiques.<\/p>\n","protected":false},"author":87,"featured_media":49712,"comment_status":"","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[24],"tags":[],"class_list":["post-51819","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=\"Chute surprise de l\u2019USD\/JPY vers 159 : rumeurs d\u2019intervention japonaise et BoJ plus restrictive dopent le yen. Volatilit\u00e9 \u00e9lev\u00e9e, RSI survendu. 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