Growth-investor portfolios tracked.

A super investor is an institutional manager — typically a hedge fund, family office, or asset manager — whose long-horizon track record has made their portfolio worth following. OpenStocks tracks the holdings of the most-watched managers (Warren Buffett, Michael Burry, Bill Ackman, Stanley Druckenmiller and 100+ more) directly from their quarterly 13F filings.

Every position you see comes from SEC Form 13F-HR — the quarterly disclosure that institutional investors managing $100M+ in U.S. equities are legally required to file within 45 days of each quarter end. We parse the raw EDGAR filings, normalise the CUSIP-to-ticker mapping, and back-fill historical positions so each portfolio reads as a continuous time series.

13F filings are released quarterly. We refresh each portfolio within minutes of a new filing hitting EDGAR, so the deadline-day surge (mid-February, mid-May, mid-August, mid-November) shows up live on this page.

By design — Form 13F covers long positions in U.S.-listed equities, ADRs, and a handful of derivatives. Short positions, cash, foreign securities, fixed-income, and private investments are not disclosed, which is why a manager's 13F book can differ meaningfully from their full AUM.

Holdings show the snapshot of a manager's portfolio at the most recent quarter end. Trades are the inferred quarter-over-quarter delta — what they bought, sold, opened or closed since the prior 13F. Both are derived from the same underlying filings.

Berkshire Hathaway (Warren Buffett), Scion Asset Management (Michael Burry), Pershing Square (Bill Ackman), Duquesne Family Office (Stanley Druckenmiller), Appaloosa (David Tepper), and Tiger Global typically draw the most traffic. The full list spans 100+ managers ranked by AUM and recent 1Y returns.