{"id":69416,"date":"2026-10-08T02:44:45","date_gmt":"2026-10-08T02:44:45","guid":{"rendered":"https:\/\/www.vtmarkets.com\/fr-latam\/uncategorized\/backtest-flags-softer-sp-500-returns-near-highs-as-breadth-weakens-and-rates-volatility-rises\/"},"modified":"2026-10-08T02:44:45","modified_gmt":"2026-10-08T02:44:45","slug":"backtest-flags-softer-sp-500-returns-near-highs-as-breadth-weakens-and-rates-volatility-rises","status":"publish","type":"post","link":"https:\/\/www.vtmarkets.com\/fr-latam\/live-updates\/backtest-flags-softer-sp-500-returns-near-highs-as-breadth-weakens-and-rates-volatility-rises\/","title":{"rendered":"Un backtest signale des performances plus modestes du S&#038;P 500 \u00e0 proximit\u00e9 de ses sommets, alors que la largeur de march\u00e9 se d\u00e9grade et que la volatilit\u00e9 des taux augmente"},"content":{"rendered":"<p>Un backtest combinant l\u2019ampleur de march\u00e9 (\u00ab\u202fbreadth\u202f\u00bb) des actions, la volatilit\u00e9 des taux et les conditions de cr\u00e9dit sugg\u00e8re des performances \u00e0 terme plus faibles lorsque les actions am\u00e9ricaines \u00e9voluent \u00e0 proximit\u00e9 de leurs records. Le filtre impose un S&#038;P 500 situ\u00e9 \u00e0 moins de 5% de son plus haut historique, un MOVE \u00e0 au moins 80% de son plus haut sur 52 semaines, un ratio de l\u2019indice HYG sur Treasuries sous sa moyenne mobile \u00e0 50 jours, ainsi que des nouveaux plus hauts nets du NYSE en territoire n\u00e9gatif. Sur les 120 jours suivants, le S&#038;P 500 a affich\u00e9 en moyenne un gain de 0,5% contre 4,5% pour une journ\u00e9e \u00ab\u202fproche des sommets\u202f\u00bb typique, et 54% des signaux ont \u00e9t\u00e9 suivis d\u2019une hausse contre 75% en temps normal. Les drawdowns ont \u00e9t\u00e9 plus marqu\u00e9s\u202f: une baisse de 10%+ s\u2019est produite 42% du temps contre 22% habituellement, tandis que des replis de 5%+ sont survenus 54% du temps contre 38%\u202f; des ajustements de param\u00e8tres proches (\u00e9cart de 2\/3\/5\/10% des sommets, MOVE \u00e0 70\/80\/90%, nouveaux plus hauts nets sous 0\/-50\/-100) ont continu\u00e9 de g\u00e9n\u00e9rer une sous-performance sur 120 jours de 2% \u00e0 10% lorsque l\u2019on comptait au moins cinq signaux.<\/p>\n\n<p>Les signaux avaient tendance \u00e0 se regrouper\u202f: 2007 a pr\u00e9c\u00e9d\u00e9 la crise financi\u00e8re, 2015 a devanc\u00e9 la correction de 2015\u20132016, 2021 a pr\u00e9c\u00e9d\u00e9 le march\u00e9 baissier de 2022, et 2019 s\u2019est r\u00e9v\u00e9l\u00e9 \u00eatre une fausse alerte jusqu\u2019au choc Covid en 2020, un \u00ab\u202flockout\u202f\u00bb de 20 jours entra\u00eenant un chevauchement des fen\u00eatres \u00e0 60 et 120 jours. Les niveaux actuels \u00e9taient qualifi\u00e9s de marqu\u00e9s, avec une moyenne sur 10 jours des nouveaux plus hauts nets \u00e0 -108, pire que 92% des journ\u00e9es de signal pass\u00e9es\u202f; le MOVE se situait proche de son plus haut annuel, tandis que les spreads \u00e9taient plus mod\u00e9r\u00e9s que lors de la plupart des signaux ant\u00e9rieurs. Par ailleurs, l\u2019EURUSD aurait retest\u00e9 1,1270\/20, avec des niveaux pr\u00e9c\u00e9dents \u00e0 1,1270\/1,1320 et un point haut \u00e0 1,1277, tandis que le positionnement \u00e9tait d\u00e9crit comme long USD, ce qui plaide pour un EURUSD et un EURCHF heurt\u00e9s avec un biais baissier\u202f; les spreads fran\u00e7ais \u00e9taient jug\u00e9s pas encore suffisamment \u00e9cart\u00e9s pour justifier de nouveaux plus bas de l\u2019euro.<\/p>\n\n<h3>Amas de signaux sur les actions et drawdowns<\/h3>\n\n<p>Les signaux avaient tendance \u00e0 se regrouper\u202f: 2007 a pr\u00e9c\u00e9d\u00e9 la crise financi\u00e8re, 2015 a devanc\u00e9 la correction de 2015\u20132016, 2021 a pr\u00e9c\u00e9d\u00e9 le march\u00e9 baissier de 2022, et 2019 s\u2019est r\u00e9v\u00e9l\u00e9 \u00eatre une fausse alerte jusqu\u2019au choc Covid en 2020, un \u00ab\u202flockout\u202f\u00bb de 20 jours entra\u00eenant un chevauchement des fen\u00eatres \u00e0 60 et 120 jours. Les niveaux actuels \u00e9taient qualifi\u00e9s de marqu\u00e9s, avec une moyenne sur 10 jours des nouveaux plus hauts nets \u00e0 -108, pire que 92% des journ\u00e9es de signal pass\u00e9es\u202f; le MOVE se situait proche de son plus haut annuel, tandis que les spreads \u00e9taient plus mod\u00e9r\u00e9s que lors de la plupart des signaux ant\u00e9rieurs.<\/p>\n\n<h3>Contexte FX europ\u00e9en et spreads<\/h3>\n\n<p>Par ailleurs, l\u2019EURUSD aurait retest\u00e9 1,1270\/20, avec des niveaux pr\u00e9c\u00e9dents \u00e0 1,1270\/1,1320 et un point haut \u00e0 1,1277, tandis que le positionnement \u00e9tait d\u00e9crit comme long USD, ce qui plaide pour un EURUSD et un EURCHF heurt\u00e9s avec un biais baissier\u202f; les spreads fran\u00e7ais \u00e9taient jug\u00e9s pas encore suffisamment \u00e9cart\u00e9s pour justifier de nouveaux plus bas de l\u2019euro.<\/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>Alerte sommet: un backtest reliant breadth, MOVE et cr\u00e9dit signale une sous-performance du S&#038;P 500 pr\u00e8s des records, avec drawdowns plus fr\u00e9quents. En FX, EURUSD\/EURCHF restent heurt\u00e9s, biais baissier.<\/p>\n","protected":false},"author":87,"featured_media":69415,"comment_status":"","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[10],"tags":[],"class_list":["post-69416","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=\"Alerte sommet: un backtest reliant breadth, MOVE et cr\u00e9dit signale une sous-performance du S&amp;P 500 pr\u00e8s des records, avec drawdowns plus fr\u00e9quents. 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