COUNTERPOINT · 1950—NOW — How much market do the ten largest hold
Top-10 share of total US equity value: 30% in 1963, 12% in 1993, 27% in 2023 — above 33% in 2026, past the 1963 peak. From 2024 the series is our recomputation, refreshed daily.
What this page answers
This static page is built to answer searches for COUNTERPOINT · 1950—NOW. It summarizes the live dataset behind the How much market do the ten largest hold panel and links to the full interactive chart.
Top-10 share of total US equity value: 30% in 1963, 12% in 1993, 27% in 2023 — above 33% in 2026, past the 1963 peak. From 2024 the series is our recomputation, refreshed daily. 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
Static Preview
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.