#13f

Institutional (13F) ownership of US stocks, live and keyless, from Nasdaq's public company data. Every quarter the big money — Vanguard, BlackRock, State Street, hedge funds and pensions — must disclose its US equity holdings in 13F filings, and that ownership is one of the most-watched fundamentals: how much of a stock is held by institutions, which funds hold it, and whether smart money is accumulating or distributing it. The ownership endpoint gives a stock's institutional-ownership summary: the percentage of the company held by institutions, the total shares outstanding, the total dollar value of institutional holdings and the count of holders. The holders endpoint is the league table of the largest institutional holders — each fund with the shares it holds, how that changed last quarter (shares and percent), the dollar value and the filing date. The activity endpoint is the accumulation/distribution view: how many institutions increased, decreased, opened (new) or closed (sold-out) their positions and the shares involved, plus a net read on whether institutions were net buyers or sellers. This is the 13F institutional-ownership cut — distinct from the insider feed (company officers' and directors' own Form 4 trades), the short-interest feed (shares sold short and days-to-cover) and the analyst, quote and movers feeds. 13F holdings are disclosed quarterly, so the data updates each filing season, not intraday. Shares are counts, values in US dollars, percentages as reported. No key, nothing stored.

api.oanor.com/institutions-api