Deep research on hedge fund strategies, 13F filings analysis, and institutional capital flows — written for serious investors.
We analyzed the latest 13F filings of the 10 most-followed institutional investors on the planet — from Warren Buffett's $300B+ portfolio to Michael Burry's concentrated contrarian bets. Here's exactly what they owned at the end of Q4 2025, and what the changes signal about where smart money is heading in 2026.
We backtested 500 institutional managers' disclosed long books against SPY. The results will surprise you.
When 3,000 hedge funds own the same 10 stocks, the crowding risk becomes systemic. Here's what the data shows.
The biggest Q4→Q1 sector shifts in 13F history — and what they historically meant for equity markets in the following quarter.
Not raw return. Not AUM size. The purest measure of manager skill — Sharpe Ratio — and who consistently tops it.
From filtering the Rankings leaderboard to constructing a diversified composite — a practical tutorial for individual investors.
The 45-day lag, the missing short book, the survivorship bias — an honest accounting of what following 13Fs actually costs you.