{"product_id":"custom-equal-weighted-index-builder-realtest","title":"Custom Equal Weighted Index Builder for RealTest","description":"\u003cp\u003eA RealTest script that reconstructs an equal-weighted S\u0026amp;P 500 index from constituent data, extending backtest history to the 1990s — well beyond the RSP ETF's 2003 inception date. The script supports GICS sector filtering, allowing you to build custom sector indexes for use as regime filters. Includes a 200-day moving average breadth filter example.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eExtend your data history beyond ETF inception dates\u003c\/li\u003e\n\u003cli\u003eFilter by GICS sector codes to build any custom index\u003c\/li\u003e\n\u003cli\u003eUse equal weighted breadth as a trend filter (200-day MA)\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003e\u003ciframe width=\"560\" height=\"315\" src=\"https:\/\/www.youtube.com\/embed\/I9vRcgfTVgc?si=D1EthbIqWOSLXi4N\" title=\"YouTube video player\"\u003e\u003c\/iframe\u003e\u003c\/p\u003e","brand":"SetupAlpha","offers":[{"title":"Default Title","offer_id":57776034251077,"sku":null,"price":0.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0960\/7141\/8181\/files\/Screenshot2026-04-24092514.png?v=1777013601","url":"https:\/\/setupalpha.com\/products\/custom-equal-weighted-index-builder-realtest","provider":"SetupAlpha","version":"1.0","type":"link"}