| Greenhouse Funds LLLP | 5,448,431 | $17.2m | 0.9% |
| VANGUARD CAPITAL MANAGEMENT LLC | 1,278,203 | $4.0m | 0.0% |
| PARTHENON LLC | 1,241,662 | $3.9m | 0.4% |
| Potomac Capital Management, Inc. | 1,131,000 | $3.6m | 2.4% |
| MARSHALL WACE, LLP | 688,326 | $2.2m | 0.0% |
| CLARK ESTATES INC/NY | 660,000 | $2.1m | 0.5% |
| AMERICAN CENTURY COMPANIES INC | 510,475 | $1.6m | 0.0% |
| DIMENSIONAL FUND ADVISORS LP | 503,818 | $1.6m | 0.0% |
| ACADIAN ASSET MANAGEMENT LLC | 478,455 | $1.5m | 0.0% |
| Russell Investments Group, Ltd. | 476,791 | $1.5m | 0.0% |
| BlackRock, Inc. | 461,553 | $1.5m | 0.0% |
| JANE STREET GROUP, LLC | 398,437 | $1.3m | 0.0% |
| D. E. Shaw & Co., Inc. | 376,670 | $1.2m | 0.0% |
| GEODE CAPITAL MANAGEMENT, LLC | 357,817 | $1.1m | 0.0% |
| GAMCO INVESTORS, INC. ET AL | 350,000 | $1.1m | 0.0% |
| CastleKnight Management LP | 315,990 | $995,369 | 0.0% |
| TWO SIGMA INVESTMENTS, LP | 222,504 | $700,888 | 0.0% |
| CITADEL ADVISORS LLC | 215,805 | $679,786 | 0.0% |
| AQR CAPITAL MANAGEMENT LLC | 212,840 | $670,446 | 0.0% |
| Peapod Lane Capital LLC | 210,384 | $662,711 | 0.4% |
| GSA CAPITAL PARTNERS LLP | 206,953 | $652,000 | 0.0% |
| VANGUARD FIDUCIARY TRUST CO | 196,622 | $619,359 | 0.0% |
| Bank of New York Mellon Corp | 176,748 | $556,756 | 0.0% |
| GOLDMAN SACHS GROUP INC | 169,000 | $532,350 | 0.0% |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | 168,777 | $531,648 | 0.0% |