Tracked investors
Public 13F filings from a curated set of well-known portfolio managers. Click an investor to see their latest reported holdings and quarter-over-quarter changes. Educational research only.
Sourced from SEC EDGAR public filings
What is a 13F filing?
Every quarter, institutional investment managers with more than $100 million in U.S. equity assets are required by the SEC to publicly disclose their holdings on Form 13F-HR. These filings — filed within 45 days of each quarter-end — reveal every long equity position the manager held at quarter-end, including the number of shares and market value. They are public record, freely accessible via SEC EDGAR, and cover some of the most closely watched portfolios in the world.
Why track these investors?
InvestorLens tracks a curated set of high-profile managers — including Warren Buffett (Berkshire Hathaway), Michael Burry (Scion Asset Management), Cathie Wood (ARK Invest), Bill Ackman (Pershing Square), Ray Dalio (Bridgewater), Stanley Druckenmiller, and others — because their disclosed positions attract significant research interest and public attention. Each profile shows the latest reported holdings, quarter-over-quarter changes (new positions, increases, reductions, and full exits), sector exposure, and a portfolio fingerprint that characterises their investment style.
Important: 13F filings reflect holdings as of quarter-end and are disclosed up to 45 days later. They show long U.S. equity positions only — not short positions, options, bonds, or cash. This data is for educational research only and is not investment advice.
Andreas Halvorsen
Viking Global Investors
Long/short global equityCo-founder of Viking Global. Another Tiger Cub. Concentrated long/short equity strategy across global markets.
Bill Ackman
Pershing Square Capital
Activist / concentratedFounder and CEO of Pershing Square Capital Management. Activist investor known for concentrated positions.
Carl Icahn
Icahn Capital
ActivistFounder of Icahn Enterprises. Pioneer of shareholder activism in the U.S.
Cathie Wood
ARK Investment Management
Thematic growth / innovationFounder, CEO, and CIO of ARK Invest. Focuses on disruptive innovation themes.
Chase Coleman
Tiger Global Management
Growth / crossoverFounder of Tiger Global. A "Tiger Cub" of Julian Robertson's Tiger Management. Pioneer of crossover public/private investing.
Daniel Loeb
Third Point LLC
Activist / event-drivenFounder of Third Point. Known for activist campaigns and pointed letters to corporate management.
David Einhorn
Greenlight Capital
Long/short valueFounder of Greenlight Capital. Famous for shorting Lehman Brothers ahead of its collapse and his long-form investment letters.
David Tepper
Appaloosa Management
Distressed / opportunisticFounder of Appaloosa Management. Known for distressed-debt and contrarian equity calls.
George Soros
Soros Fund Management
Macro / reflexiveFounder of Soros Fund Management. Best known for "breaking the Bank of England" in 1992 and his theory of reflexivity.
Howard Marks
Oaktree Capital Management
Distressed / credit / contrarianCo-founder of Oaktree Capital. Author of widely-read memos on market cycles, risk, and contrarian thinking.
Izzy Englander
Millennium Management
Multi-strategy / quantitativeFounder and CEO of Millennium Management. Runs a massive multi-strategy fund with thousands of positions across sectors including significant AI infrastructure exposure.
Ken Griffin
Citadel Advisors
Multi-strategy / quantitativeFounder and CEO of Citadel. Operates one of the world's largest multi-strategy hedge funds.
Leopold Aschenbrenner
Forethought
AI / deep tech / long-term structuralFormer OpenAI researcher and author of the influential "Situational Awareness" paper (2024), which argued that AGI is likely within this decade. Co-founder of Forethought, an AI-focused investment fund. Previously worked at OpenAI on alignment and governance before departing in 2024. Known for his views on AI acceleration and national security implications of advanced AI.
Michael Burry
Scion Asset Management
Contrarian / deep valueFounder of Scion Asset Management. Best known for his early bet against the U.S. housing market in 2007–2008.
Paul Tudor Jones
Tudor Investment Corp
Macro / discretionaryFounder of Tudor Investment Corp. Famous for predicting and profiting from the 1987 stock market crash.
Philippe Laffont
Coatue Management
Technology / growth / AIFounder and CIO of Coatue Management. Former Tiger Cub. Known for concentrated bets on technology and AI infrastructure companies including NVDA, AMD, and hyperscalers.
Ray Dalio
Bridgewater Associates
Macro / risk-parityFounder of Bridgewater Associates. Pioneered the all-weather and risk-parity approaches.
Seth Klarman
Baupost Group
Deep valueFounder of Baupost Group. Author of "Margin of Safety" and a leading proponent of value investing.
Stanley Druckenmiller
Duquesne Family Office
Macro / top-downLegendary macro investor and former lead portfolio manager of the Quantum Fund.
Steve Cohen
Point72 Asset Management
Multi-strategy / quantitativeFounder of Point72 (formerly SAC Capital). Owner of the New York Mets. One of the most successful hedge fund traders of the modern era.
Steve Mandel
Lone Pine Capital
Long/short growthFounder of Lone Pine Capital. Another Tiger Cub. Long-tenured long/short equity manager focused on high-quality compounders.
Warren Buffett
Berkshire Hathaway
Long-term value investingChairman and CEO of Berkshire Hathaway. Considered one of the most successful investors of the 20th century.