Fund overlap
How much two hedge funds' books are the same - and which managers run books like no one else's. Pick any two to compare position by position, or start from the pairs that look most alike.
Compare two books
Q3 2026Most alike
Q3 2026 · the pairs with the most in common| Funds | Overlap | In common | |
|---|---|---|---|
| 32.20% | 745 | ||
| 31.45% | 1,409 | ||
| 24.13% | 55 | ||
| 23.10% | 880 | ||
| 16.27% | 63 | ||
| 12.38% | 51 | ||
| 9.68% | 393 | ||
| 8.47% | 232 | ||
| 5.18% | 258 | ||
| 2.63% | 34 |
Most distinctive books
lowest average overlap with every other fund
Wolverine Asset Management6.49%
Belvedere Trading13.85%
Dimensional Fund Advisors19.15%
Simplex Trading21.28%
IMC-Chicago21.97%
Most like the rest
highest average overlap with every other fund- IMC-Chicago21.97%
- Simplex Trading21.28%
- Dimensional Fund Advisors19.15%
- Belvedere Trading13.85%
- Wolverine Asset Management6.49%
Source: SEC EDGAR Form 13F filings for the hedge funds on this site's list, as of the end of Q3 2026. Overlap takes every stock two managers both hold and adds up the smaller of their two weights: two identical books overlap 100%, two with nothing in common 0%. Weights are each position's share of the manager's stock positions that resolve to a ticker, ETFs included, so two market makers holding the same index funds do overlap. Options are not counted. The tables list each book's largest positions; a stock shown as under a percentage is one the other book either doesn't hold or holds below its largest eighty. A 13F shows long positions only, so two funds that look alike here can still be running opposite shorts.