| WEXFORD CAPITAL LP | 12,071,823 | $39.2m | 5.0% |
| ADAGE CAPITAL PARTNERS GP, L.L.C. | 4,575,000 | $14.9m | 0.0% |
| VANGUARD CAPITAL MANAGEMENT LLC | 1,059,603 | $3.4m | 0.0% |
| Peapod Lane Capital LLC | 807,804 | $2.6m | 1.8% |
| DIMENSIONAL FUND ADVISORS LP | 691,667 | $2.2m | 0.0% |
| JANE STREET GROUP, LLC | 506,662 | $1.6m | 0.0% |
| CITADEL ADVISORS LLC | 452,163 | $1.5m | 0.0% |
| BlackRock, Inc. | 407,976 | $1.3m | 0.0% |
| MARSHALL WACE, LLP | 395,583 | $1.3m | 0.0% |
| Johns Hopkins University | 387,359 | $1.3m | 0.1% |
| BRIDGEWAY CAPITAL MANAGEMENT, LLC | 332,313 | $1.1m | 0.0% |
| Russell Investments Group, Ltd. | 329,821 | $1.1m | 0.0% |
| GEODE CAPITAL MANAGEMENT, LLC | 306,028 | $995,730 | 0.0% |
| RENAISSANCE TECHNOLOGIES LLC | 292,280 | $949,910 | 0.0% |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | 290,096 | $942,812 | 0.0% |
| Empowered Funds, LLC | 241,313 | $784,267 | 0.0% |
| AQR CAPITAL MANAGEMENT LLC | 177,824 | $577,928 | 0.0% |
| VANGUARD FIDUCIARY TRUST CO | 161,791 | $525,821 | 0.0% |
| Round Rock Advisors LLC | 152,841 | $496,733 | 0.1% |
| MORGAN STANLEY | 133,560 | $434,070 | 0.0% |
| Centiva Capital, LP | 130,870 | $425,328 | 0.0% |
| GSA CAPITAL PARTNERS LLP | 129,547 | $421,000 | 0.0% |
| MILLENNIUM MANAGEMENT LLC | 124,186 | $403,604 | 0.0% |
| ACADIAN ASSET MANAGEMENT LLC | 122,050 | $396,000 | 0.0% |
| Marquette Asset Management, LLC | 109,826 | $356,935 | 0.0% |