COUNTERPOINT · 1950—現在 — 上位 10 銘柄は市場の何割か
上位 10 銘柄の全米株式時価総額シェア：1963 年 30%、1993 年 12%、2023 年 27%、2026 年は 33% 超で 1963 年ピークを突破。2024 年以降は当サイトの再計算（毎日更新）。
What this page answers
This static page is built to answer searches for COUNTERPOINT · 1950—現在. It summarizes the live dataset behind the 上位 10 銘柄は市場の何割か panel and links to the full interactive chart.
上位 10 銘柄の全米株式時価総額シェア：1963 年 30%、1993 年 12%、2023 年 27%、2026 年は 33% 超で 1963 年ピークを突破。2024 年以降は当サイトの再計算（毎日更新）。 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
- 2026-07-11
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Data & Source
GET /api/latest/concentration.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.