S&P500 · 組入方法 — S&P500 はどのように「組まれる」のか
採用基準、加重方法、構成変更のガバナンス。ルールが「誰が米国大型株を代表できるか」を決める。
What this page answers
This static page is built to answer searches for S&P500 · 組入方法. It summarizes the live dataset behind the S&P500 はどのように「組まれる」のか panel and links to the full interactive chart.
採用基準、加重方法、構成変更のガバナンス。ルールが「誰が米国大型株を代表できるか」を決める。 The data is refreshed by the History of Market pipeline and published as a stable JSON endpoint for research, citation, and AI-agent use.
Latest Snapshot
- Updated
- 2026-02
Static Preview
Data & Source
GET /api/sp500/rules.json — Canonical dataset endpoint.
Yahoo Finance · Macrotrends · Robert Shiller · FRED · S&P Global · Nasdaq · NBER.
FAQ
Where does this data come from?
History of Market combines public market and macro datasets including Yahoo Finance, Macrotrends, Robert Shiller, FRED, S&P Global, Nasdaq, and NBER. The exact endpoint for this panel is linked below.
How often is it updated?
Daily-tier datasets refresh after the U.S. market close, with a broader weekly refresh on Sunday. The timestamp shown on this page comes from the JSON payload.
Can I use the data?
Yes, for research and education with attribution to History of Market. Upstream data sources retain their own terms.