{"id":51526,"date":"2026-07-31T18:55:29","date_gmt":"2026-07-31T18:55:29","guid":{"rendered":"https:\/\/www.vtmarkets.com\/fr-latam\/uncategorized\/usd-jpy-recule-sur-fond-de-soupcons-dintervention-japonaise-et-de-banque-du-japon-plus-restrictive-la-volatilite-reste-elevee\/"},"modified":"2026-07-31T18:55:29","modified_gmt":"2026-07-31T18:55:29","slug":"usd-jpy-recule-sur-fond-de-soupcons-dintervention-japonaise-et-de-banque-du-japon-plus-restrictive-la-volatilite-reste-elevee","status":"publish","type":"post","link":"https:\/\/www.vtmarkets.com\/fr-latam\/live-updates\/usd-jpy-recule-sur-fond-de-soupcons-dintervention-japonaise-et-de-banque-du-japon-plus-restrictive-la-volatilite-reste-elevee\/","title":{"rendered":"USD\/JPY recule sur fond de soup\u00e7ons d\u2019intervention japonaise et de Banque du Japon plus restrictive, la volatilit\u00e9 reste \u00e9lev\u00e9e"},"content":{"rendered":"<p>L\u2019USD\/JPY a fortement chut\u00e9 vers la zone des 159,50 vendredi, la paire \u00e9voluant autour de 159,12, alors que le yen se raffermissait 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 de plusieurs d\u00e9cennies, d\u00e9clenchant une baisse brutale tandis que la volatilit\u00e9 restait \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\u2019y opposant en faveur d\u2019une hausse \u00e0 1,25% face aux risques haussiers sur l\u2019inflation li\u00e9s aux chocs de demande ext\u00e9rieure et \u00e0 l\u2019\u00e9volution des conditions financi\u00e8res mondiales.<\/p>\n\n<p>La banque centrale a r\u00e9p\u00e9t\u00e9 qu\u2019elle continuerait de relever le co\u00fbt du cr\u00e9dit 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 pour \u00e9viter de prendre du retard sur la courbe de 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 ult\u00e9rieur de Gaza, mais le Kowe\u00eft a rapport\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 reste sous les moyennes mobiles simples (SMA) 20 p\u00e9riodes et 100 p\u00e9riodes \u00e0 162,31 et 162,62, fait face \u00e0 une r\u00e9sistance \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 options face au renforcement du yen et \u00e0 la volatilit\u00e9 des march\u00e9s<\/h3>\n\n<p>Alors que l\u2019USD\/JPY oscille autour de 159,12 avec un RSI en survente \u00e0 25, nous conseillons aux op\u00e9rateurs sur d\u00e9riv\u00e9s d\u2019\u00e9viter de chercher \u00e0 \u00ab attraper un couteau qui tombe \u00bb via des positions au comptant et de se tourner plut\u00f4t vers le march\u00e9 des options. Compte tenu du fort momentum baissier sous la moyenne mobile 20 p\u00e9riodes \u00e0 162,31, l\u2019achat d\u2019options de vente (puts) de maturit\u00e9 courte appara\u00eet tr\u00e8s attractif pour capter une poursuite du repli. Pour ces strat\u00e9gies baissi\u00e8res, nous viserions les niveaux de support imm\u00e9diats \u00e0 158,91 et 158,56.<\/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 5.500 milliards de yens peu apr\u00e8s, pour soutenir la devise. Ce pr\u00e9c\u00e9dent historique sugg\u00e8re qu\u2019il faut se pr\u00e9parer \u00e0 des \u00ab gaps \u00bb de liquidit\u00e9 soudains et volatils si les autorit\u00e9s interviennent \u00e0 nouveau sur le march\u00e9. Pour se prot\u00e9ger contre ces mouvements erratiques, nous recommandons d\u2019utiliser des puts \u00e0 barri\u00e8re de type knock-out ou des spreads baissiers (bear put spreads) afin de limiter le co\u00fbt de la prime tout en d\u00e9finissant le risque maximal.<\/p>\n\n<h3>Environnement macro 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 disposition \u00e0 resserrer davantage, l\u2019\u00e9cart de rendement entre les \u00c9tats-Unis et le Japon se r\u00e9duit progressivement. Nous pouvons tirer parti de ce changement d\u2019environnement macro\u00e9conomique via des spreads calendaires, en anticipant une hausse de la volatilit\u00e9 implicite \u00e0 plus long terme \u00e0 mesure que le rattrapage de la BoJ face \u00e0 l\u2019inflation devient une r\u00e9alit\u00e9. Ce virage restrictif fait des options d\u2019achat de yen \u00e0 plus longue \u00e9ch\u00e9ance (puts USD\/JPY) une position c\u0153ur fondamentalement solide pour les prochaines semaines.<\/p>\n\n<p>Les d\u00e9veloppements g\u00e9opolitiques, notamment un potentiel accord de d\u00e9sarmement \u00e0 Gaza et les tensions persistantes avec l\u2019Iran, rendent les flux vers les valeurs refuges tr\u00e8s impr\u00e9visibles. Cette incertitude tend g\u00e9n\u00e9ralement \u00e0 propulser la volatilit\u00e9 implicite \u00e0 une semaine de l\u2019USD\/JPY bien au-del\u00e0 de sa moyenne historique de 8%, ce qui rend les achats \u00ab directionnels \u00bb d\u2019options co\u00fbteux. Pour contrer cet environnement de forte volatilit\u00e9, nous devrions privil\u00e9gier des spreads de cr\u00e9dit ou des strat\u00e9gies de ratio-writing permettant d\u2019encaisser de la prime en attendant l\u2019\u00e9mergence d\u2019une tendance directionnelle plus claire.<\/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>Chute \u00e9clair de l\u2019USD\/JPY vers 159 apr\u00e8s intervention pr\u00e9sum\u00e9e de Tokyo et ton plus restrictif de la BoJ. Volatilit\u00e9 \u00e9lev\u00e9e, RSI survendu. Privil\u00e9gier options: puts courts, spreads, barri\u00e8res knock-out.<\/p>\n","protected":false},"author":87,"featured_media":49388,"comment_status":"","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[10],"tags":[],"class_list":["post-51526","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 4.9.10 - aioseo.com -->\n\t<meta name=\"description\" content=\"Chute \u00e9clair de l\u2019USD\/JPY vers 159 apr\u00e8s intervention pr\u00e9sum\u00e9e de Tokyo et ton plus restrictif de la BoJ. Volatilit\u00e9 \u00e9lev\u00e9e, RSI survendu. 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