| Rank | Company | AUM |
| #1 | J.P. Morgan | $53.5 |
| #2 | Bridgewater Associates | $43.6 |
| #3 | Paulson & Company | $32.0 |
| #4 | Brevan Howard | $27.0 |
| #5 | Soros Fund Management | $27.0 |
| #6 | Man Group | $25.3 |
| #7 | Och-Ziff Capital Management Group | $23.1 |
| #8 | D.E. Shaw Group* | $23.0 |
| #9 | BlackRock (BGI) | $21.0 |
| #10 | Farallon Capital Management | $20.7 |
| #11 | Baupost Group** | $20.0 |
| #12 | Goldman Sachs Asset Management | $17.8 |
| #13 | BlueCrest Capital Management | $17.3 |
| #14 | Canyon Partners | $17.0 |
| #15 | Landsdowne Partners* | $15.0 |
| #16 | Renaissance Technologies | $15.0 |
| #17 | Fortress Investment Group | $13.8 |
| #18 | Moore Capital Management | $12.4 |
| #19 | Viking Global Investors* | $12.4 |
| #20 | Citadel Investment Group | $12.2 |
| #21 | SAC Capital Partners | $12.0 |
| #22 | GLG Partners | $11.5 |
| #23 | Tudor Investment Corp | $10.0 |
| TOTAL ASSETS | $482.6 |
*as of January 1, 2010
**as of September 30, 2009
With the large sizes of JPM and GS's hedge funds, there will certainly be an outsized impact on those two should the Volcker Rule find a place in Congress' financial reform bill. Though, GS would probably just flip to a complete hedge fund while JPM may have to spin off its funds. It is amazing to think hedge funds control nearly half a trillion dollars in wealth.