13F filings
What the whales own
Each calendar quarter the biggest hedge funds + family offices are required to file Form 13F-HR with the SEC, listing their U.S. equity positions. Here are the 15 we track most closely. Click any name to see their latest top 20 holdings.
13F filings show positions as of the quarter end and are filed within 45 days — they describe what whales OWNED, not what they own RIGHT NOW.
Berkshire
Berkshire Hathaway
Warren Buffett & Charlie Munger's holding company. Long-term value bets on durable franchises.
Tiger Global
Tiger Global Management
Chase Coleman's growth-stage tech-focused hedge fund. Early bets on internet platforms and AI.
Coatue
Coatue Management
Philippe Laffont's tech-heavy hedge fund. Mix of public and private growth equity.
Citadel
Citadel Advisors
Ken Griffin's multi-strategy hedge fund. Quantitative + fundamental hybrid.
Renaissance
Renaissance Technologies
Jim Simons' legendary quant fund. Medallion fund averaged 66% annualized over decades (closed to outside money).
D. E. Shaw
D. E. Shaw
David Shaw's computational hedge fund. Pioneer of systematic trading.
Two Sigma
Two Sigma
Machine-learning driven quant fund. Heavy data infrastructure.
Bridgewater
Bridgewater Associates
Ray Dalio's macro hedge fund. All-Weather + Pure Alpha strategies, global macro focus.
Ark Invest
Ark Investment Management
Cathie Wood's thematic disruptive-innovation ETFs. Genomics, fintech, AI, autonomous.
Pershing Square
Pershing Square Capital
Bill Ackman's activist hedge fund. Concentrated long bets in quality consumer names.
Greenlight
Greenlight Capital
David Einhorn's value-focused long/short fund. Famous Lehman short call.
Third Point
Third Point
Daniel Loeb's event-driven activist fund. Spin-offs, restructurings, M&A.
Baupost
Baupost Group
Seth Klarman's margin-of-safety value fund. "Margin of Safety" book is canonical value-investing text.
Viking Global
Viking Global
Andreas Halvorsen's Tiger Cub long/short equity fund. Concentrated quality growth.
Glenview
Glenview Capital
Larry Robbins' healthcare + financials concentrated long/short fund.
Why 13F filings matter
Funds managing over $100M in U.S. equities must publicly disclose their long positions every 90 days. By itself a 13F doesn't tell you when a fund bought or sold, only what they held at quarter-end. But cross-fund overlap on small-cap and pre-pop names often surfaces the same setup we look for in our research.