13F Holders: Who Owns This Stock, and Who Just Bought In

What the 13F Tape Actually Is

Every fund manager with >$100M AUM files a Form 13F listing their long U.S. equity positions within 45 days of quarter-end. The filings are quarterly (lagging) and partial (no shorts, no derivatives on most names, no non-U.S. listings), but they're the only public record of who owns what. Used correctly, 13Fs answer a narrower question than "what are smart money buying?" — they tell you *which specific funds* have this stock in which *size* relative to their book, and whether that's up or down from last quarter.

What the Holders Table Shows

The Institutional Holders table lists the top 25 13F filers on this ticker, sorted by position size. Each row shows the fund, shares held, dollar value, % of the fund's total AUM the position represents (portfolio weight), and the QoQ delta in shares. A filter lets you switch between "largest holders" and "biggest QoQ increases" — the latter is where new conviction shows up. Hedge-fund filers are flagged separately from mutual funds and pensions because they tend to turn over faster.

Reading the Signal

Raw ownership is already in the price. What isn't is portfolio weight change: when a concentrated long/short fund lifts a position from 1% to 4% of its book, that's a capital-allocation decision, not a trim-or-add noise. Filter by holders where the position is ≥ 2% of their total AUM and QoQ shares delta > +25%. A cluster of such moves across multiple independent funds is a much stronger signal than a single large filer adding. Also watch for high-profile exits — when a founder-run fund fully drops a name, it's usually a firmer signal than when they add, because adders are often just scaling in.

Where It Fits

Pair with the Insider MSPR chart to check whether corporate insiders and external institutions are moving the same direction — divergences (insiders selling, 13Fs buying) tend to resolve in favor of insiders on 6-month horizons. For fund-by-fund pattern work across many tickers, use the Investors 13F explorer.

Open the Institutional Holders table → /app/stocks/AAPL/sentiment