{"id":6439,"date":"2026-10-09T20:09:05","date_gmt":"2026-10-09T18:09:05","guid":{"rendered":"https:\/\/propaccount.com\/?post_type=glossary&p=6439"},"modified":"2026-10-09T20:09:05","modified_gmt":"2026-10-09T18:09:05","slug":"what-is-backtesting","status":"publish","type":"glossary","link":"https:\/\/propaccount.com\/es\/resources\/glossary\/what-is-backtesting\/","title":{"rendered":"\u00bfQu\u00e9 es el backtesting?"},"content":{"rendered":"

Backtesting<\/b> es el proceso de probar una estrategia de trading con datos hist\u00f3ricos del mercado para ver c\u00f3mo habr\u00eda funcionado en el pasado. Los traders definen un conjunto de reglas de entrada y salida, las aplican a un bloque de datos hist\u00f3ricos de precios y registran las operaciones que la estrategia habr\u00eda realizado. El resultado es un informe de rendimiento que muestra la tasa de aciertos, el beneficio medio por operaci\u00f3n, la reducci\u00f3n m\u00e1xima (drawdown) y otras m\u00e9tricas que ayudan al trader a evaluar si vale la pena implementar la estrategia con capital real.<\/span><\/p>\n

El backtesting se puede realizar de forma manual, desplaz\u00e1ndose por gr\u00e1ficos hist\u00f3ricos y marcando operaciones hipot\u00e9ticas, o de forma autom\u00e1tica mediante un software que simula miles de operaciones en a\u00f1os de datos en cuesti\u00f3n de minutos. El backtesting automatizado es el enfoque m\u00e1s com\u00fan, especialmente para los traders que utilizan EA, bots de IA o cualquier estrategia con reglas definidas con precisi\u00f3n. La calidad del backtest depende en gran medida de la calidad de los datos hist\u00f3ricos, de la inclusi\u00f3n de condiciones realistas como el spread y el deslizamiento (slippage), y de qu\u00e9 tan fielmente el entorno simulado coincide con el trading en vivo.<\/span><\/p>\n

Una estrategia sometida a backtesting que parece rentable con datos hist\u00f3ricos a\u00fan puede tener un rendimiento inferior en los mercados reales. Las condiciones hist\u00f3ricas no siempre se repiten; las estrategias pueden estar sobreajustadas (overfitted) a los datos espec\u00edficos con los que se probaron, y la ejecuci\u00f3n en tiempo real introduce deslizamiento, variaci\u00f3n de spreads y decisiones emocionales que los backtests suelen ignorar. Para los traders de empresas de fondeo (prop firms), el backtesting es \u00fatil como un primer filtro para la selecci\u00f3n de estrategias, pero no es un predictor fiable del rendimiento en desaf\u00edos o cuentas financiadas. La mayor\u00eda de los traders de empresas de fondeo que tienen un \u00e9xito constante utilizan el backtesting junto con el forward testing en cuentas demo antes de comprometerse con un desaf\u00edo real.<\/span><\/p>","protected":false},"featured_media":0,"template":"","meta":{"_acf_changed":false,"inline_featured_image":false,"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"default","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"set","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}}},"glossary-category":[131],"class_list":["post-6439","glossary","type-glossary","status-publish","hentry","glossary-category-trader-glossary"],"acf":{"target_keyword":"backtesting","glossary_post_image":"","key_takeaway":"Key Takeaway","key_takeaway_description":"Backtesting is the process of testing a trading strategy against historical market data to evaluate how it would have performed. It is useful as a first filter for strategy selection but has significant limits, including hindsight bias, overfitting, and the gap between simulated and live execution.","faq":"What metrics does a backtest typically report?<\/b>\r\n\r\nCommon metrics include win rate, average profit per winning trade, average loss per losing trade, maximum drawdown, profit factor, number of trades, and the overall return across the backtest period. More advanced reports also include risk-adjusted metrics such as the Sharpe ratio and expectancy per trade.<\/span>\r\n\r\nWhy do backtested strategies often underperform in live trading?<\/b>\r\n\r\nSeveral reasons. Backtests can be overfitted to specific historical conditions that do not repeat. They often exclude or underestimate real-world execution factors such as slippage, spread variation, and partial fills. And emotional decisions during live trading can cause traders to deviate from the rules the strategy was tested on. The gap between backtested results and live performance is one of the most common reasons new prop firm traders fail challenges.<\/span>\r\n\r\nIs backtesting worth doing before a prop firm challenge?<\/b>\r\n\r\nYes, as a first filter. A strategy that fails to produce profit in backtesting is unlikely to produce it in live markets. But passing a backtest does not guarantee passing a challenge. Most consistently successful prop firm traders combine backtesting with forward testing on a demo account before deploying the strategy on a live challenge.<\/span>"},"_links":{"self":[{"href":"https:\/\/propaccount.com\/es\/wp-json\/wp\/v2\/glossary\/6439","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/propaccount.com\/es\/wp-json\/wp\/v2\/glossary"}],"about":[{"href":"https:\/\/propaccount.com\/es\/wp-json\/wp\/v2\/types\/glossary"}],"wp:attachment":[{"href":"https:\/\/propaccount.com\/es\/wp-json\/wp\/v2\/media?parent=6439"}],"wp:term":[{"taxonomy":"glossary-category","embeddable":true,"href":"https:\/\/propaccount.com\/es\/wp-json\/wp\/v2\/glossary-category?post=6439"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}