{"id":69376,"date":"2026-10-08T02:39:19","date_gmt":"2026-10-08T02:39:19","guid":{"rendered":"https:\/\/www.vtmarkets.com\/fr-ca\/uncategorized\/backtest-flags-softer-sp-500-returns-near-highs-as-breadth-weakens-and-rates-volatility-rises\/"},"modified":"2026-10-08T02:39:19","modified_gmt":"2026-10-08T02:39:19","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-ca\/live-updates\/backtest-flags-softer-sp-500-returns-near-highs-as-breadth-weakens-and-rates-volatility-rises\/","title":{"rendered":"Un test r\u00e9trospectif signale des rendements plus modestes du S&#038;P 500 pr\u00e8s de ses sommets, tandis que la participation s\u2019effrite et que la volatilit\u00e9 des taux augmente"},"content":{"rendered":"<p>Un backtest combinant l\u2019ampleur du march\u00e9 actions, la volatilit\u00e9 des taux et les conditions de cr\u00e9dit sugg\u00e8re des rendements futurs plus faibles lorsque les actions am\u00e9ricaines se situent pr\u00e8s de leurs records. Le filtre exige que le S&#038;P 500 soit \u00e0 moins de 5 % de son sommet historique, que l\u2019indice MOVE atteigne au moins 80 % de son plus haut sur 52 semaines, que le ratio de l\u2019indice HYG aux Treasuries soit sous sa moyenne mobile \u00e0 50 jours, et que le solde net des nouveaux sommets du NYSE soit sous z\u00e9ro. Au cours des 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 typique \u00ab pr\u00e8s des sommets \u00bb, et 54 % des signaux ont \u00e9t\u00e9 suivis de gains, comparativement \u00e0 75 % normalement. Les replis ont \u00e9t\u00e9 plus marqu\u00e9s : une baisse de 10 % et plus s\u2019est produite 42 % du temps contre 22 % normalement, tandis que des reculs de 5 % et plus sont survenus 54 % du temps contre 38 %; des ajustements proches des param\u00e8tres (2\/3\/5\/10 % sous les sommets, MOVE \u00e0 70\/80\/90 %, solde net des nouveaux sommets sous 0\/-50\/-100) ont tout de m\u00eame g\u00e9n\u00e9r\u00e9 une sous-performance sur 120 jours de 2 % \u00e0 10 % lorsqu\u2019il y avait au moins cinq signaux.<\/p>\n\n<p>Les signaux avaient tendance \u00e0 se regrouper : 2007 a pr\u00e9c\u00e9d\u00e9 la crise financi\u00e8re, 2015 est survenu avant la correction de 2015\u20132016, 2021 avant le march\u00e9 baissier de 2022, et 2019 s\u2019est r\u00e9v\u00e9l\u00e9 \u00eatre une fausse alerte jusqu\u2019\u00e0 la Covid en 2020, un verrouillage de 20 jours entra\u00eenant un chevauchement dans les fen\u00eatres de 60 et 120 jours. Les lectures actuelles \u00e9taient d\u00e9crites comme robustes, avec une moyenne sur 10 jours du solde net des nouveaux sommets \u00e0 -108, pire que 92 % des journ\u00e9es de signal pass\u00e9es; le MOVE \u00e9tait pr\u00e8s de son plus haut annuel, tandis que les \u00e9carts de cr\u00e9dit \u00e9taient plus mod\u00e9r\u00e9s que lors de la plupart des signaux pr\u00e9c\u00e9dents. Par ailleurs, on indiquait que l\u2019EURUSD avait retest\u00e9 1,1270\/20, avec des niveaux ant\u00e9rieurs \u00e0 1,1270\/1,1320 et un sommet \u00e0 1,1277, tandis que le positionnement \u00e9tait d\u00e9crit comme long USD, ce qui pointe vers un EURUSD et un EURCHF cahoteux avec un biais baissier; les \u00e9carts fran\u00e7ais \u00e9taient qualifi\u00e9s de pas encore assez larges pour justifier de nouveaux creux de l\u2019euro.<\/p>\n\n<h3>Regroupements de signaux sur les actions et replis<\/h3>\n\n<p>Les signaux avaient tendance \u00e0 se regrouper : 2007 a pr\u00e9c\u00e9d\u00e9 la crise financi\u00e8re, 2015 est survenu avant la correction de 2015\u20132016, 2021 avant le march\u00e9 baissier de 2022, et 2019 s\u2019est r\u00e9v\u00e9l\u00e9 \u00eatre une fausse alerte jusqu\u2019\u00e0 la Covid en 2020, un verrouillage de 20 jours entra\u00eenant un chevauchement dans les fen\u00eatres de 60 et 120 jours. Les lectures actuelles \u00e9taient d\u00e9crites comme robustes, avec une moyenne sur 10 jours du solde net des nouveaux sommets \u00e0 -108, pire que 92 % des journ\u00e9es de signal pass\u00e9es; le MOVE \u00e9tait pr\u00e8s de son plus haut annuel, tandis que les \u00e9carts de cr\u00e9dit \u00e9taient plus mod\u00e9r\u00e9s que lors de la plupart des signaux pr\u00e9c\u00e9dents.<\/p>\n\n<h3>Contexte du FX europ\u00e9en et des \u00e9carts<\/h3>\n\n<p>Par ailleurs, on indiquait que l\u2019EURUSD avait retest\u00e9 1,1270\/20, avec des niveaux ant\u00e9rieurs \u00e0 1,1270\/1,1320 et un sommet \u00e0 1,1277, tandis que le positionnement \u00e9tait d\u00e9crit comme long USD, ce qui pointe vers un EURUSD et un EURCHF cahoteux avec un biais baissier; les \u00e9carts fran\u00e7ais \u00e9taient qualifi\u00e9s de pas encore assez larges pour justifier de nouveaux creux de l\u2019euro.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><b>Commencez \u00e0 n\u00e9gocier d\u00e8s maintenant \u2014 cliquez <a href=\"https:\/\/www.vtmarkets.com\/fr-ca\/trade-now\/\">ici<\/a> pour cr\u00e9er votre compte r\u00e9el VT Markets.<\/b>\n\n<\/p>","protected":false},"excerpt":{"rendered":"<p>Attention aux sommets: un backtest montre que lorsque le S&#038;P 500 fr\u00f4le ses records, avec MOVE \u00e9lev\u00e9, cr\u00e9dit qui se d\u00e9t\u00e9riore et nouveaux sommets NYSE n\u00e9gatifs, les 120 jours suivants sous-performent, avec plus de replis.<\/p>\n","protected":false},"author":87,"featured_media":69375,"comment_status":"","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[24],"tags":[],"class_list":["post-69376","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=\"Attention aux 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