| 1 | AAM COMPANY |
| 2 | ABACUS FINANCIAL GROUP INC. |
| 3 | ABBVIE INC. |
| 4 | ABRAHAM AND SONS INC. |
| 5 | ADM DERIVATIVES INC |
| 6 | ADM INVESTOR SERVICES INC. |
| 7 | ADVISORY RESEARCH INC. |
| 8 | AIG CLEARING CORPORATION |
| 9 | ALLSTON CAPITAL LLC |
| 10 | ALPHAMETRIX 360 LLC |
| 11 | ALTAIR ADVISERS LLC |
| 12 | AMALGAMATED BANK OF CHICAGO |
| 13 | AMALGAMATED TRUST AND SAVINGS BANK |
| 14 | AMERICAN EXPRESS TAX AND BUSINESS SERVICE |
| 15 | AMSTED INDUSTRIES INCORPORATED |
| 16 | ANTARES CAPITAL LP |
| 17 | ARCHIPELAGO SERVICES |
| 18 | ARGUS CORPORATION |
| 19 | ARIEL INVESTMENTS |
| 20 | ATIVO CAPITAL MANAGEMENT LLC |
| 21 | ATLANTIC TRADING USA LLC |
| 22 | ATTUCKS ASSET MANAGEMENT LLC |
| 23 | BA FUTURES INC. |
| 24 | BALYASNY ASSET MANAGEMENT L.P. |
| 25 | BALYASNY ASSET MANAGEMENT LP |