| 1 | VAN ECK ASSOCIATES CORP | 8,027,780 | $70.0M | 0.06% | Share |
| 2 | FMR LLC | 7,992,500 | $70.0M | 0.00% | Share |
| 3 | Hood River Capital Management LLC | 5,231,489 | $46.1M | 0.51% | Share |
| 4 | VAN ECK ASSOCIATES CORP | 3,211,702 | $28.0M | 0.02% | Share |
| 5 | CITADEL ADVISORS LLC | 3,225,740 | $28.0M | 0.00% | Share |
| 6 | Encompass Capital Advisors LLC | 2,908,033 | $25.6M | 1.05% | Share |
| 7 | DRIEHAUS CAPITAL MANAGEMENT LLC | 2,659,069 | $23.4M | 0.16% | Share |
| 8 | COOPER CREEK PARTNERS MANAGEMENT LLC | 2,272,937 | $20.0M | 0.90% | Share |
| 9 | WASATCH ADVISORS LP | 860,426 | $17.9M | 0.11% | Share |
| 10 | NEXT CENTURY GROWTH INVESTORS LLC | 1,855,260 | $16.3M | 1.14% | Share |
| 11 | Mink Brook Asset Management LLC | 648,405 | $13.5M | 8.53% | Share |
| 12 | Ghisallo Capital Management LLC | 1,300,000 | $11.5M | 0.51% | Share |
| 13 | Telemark Asset Management, LLC | 1,300,000 | $11.5M | 1.14% | Share |
| 14 | Freestone Grove Partners LP | 550,595 | $11.0M | 0.08% | Share |
| 15 | VANGUARD GROUP INC | 513,306 | $10.7M | 0.00% | Share |
| 16 | ArrowMark Colorado Holdings LLC | 1,050,036 | $9.3M | 0.20% | Share |
| 17 | ADAGE CAPITAL PARTNERS GP, L.L.C. | 1,025,000 | $9.0M | 0.01% | Share |
| 18 | MANUFACTURERS LIFE INSURANCE COMPANY, THE | 476,917 | $9.0M | 0.01% | Share |
| 19 | SEGALL BRYANT & HAMILL, LLC | 939,185 | $8.3M | 0.11% | Share |
| 20 | ROYCE & ASSOCIATES LP | 835,000 | $7.4M | 0.07% | Share |
| 21 | HRT FINANCIAL LP | 828,431 | $7.0M | 0.02% | Share |
| 22 | Pacific Ridge Capital Partners, LLC | 310,325 | $6.5M | 1.42% | Share |
| 23 | MILLENNIUM MANAGEMENT LLC | 294,576 | $6.0M | 0.00% | Share |
| 24 | Alyeska Investment Group, L.P. | 327,405 | $6.0M | 0.02% | Share |
| 25 | MARATHON CAPITAL MANAGEMENT | 593,515 | $5.2M | 1.13% | Share |
| 26 | THOMPSON SIEGEL & WALMSLEY LLC | 574,432 | $5.1M | 0.08% | Share |
| 27 | Alyeska Investment Group, L.P. | 667,004 | $5.0M | 0.01% | Share |
| 28 | BlackRock, Inc. | 285,567 | $5.0M | 0.00% | Share |
| 29 | MARSHALL WACE, LLP | 677,646 | $5.0M | 0.00% | Share |
| 30 | CITADEL ADVISORS LLC | 263,870 | $5.0M | 0.00% | Share |
| 31 | MARSHALL WACE, LLP | 596,707 | $5.0M | 0.00% | Share |
| 32 | WEXFORD CAPITAL LP | 551,191 | $4.9M | 0.94% | Share |
| 33 | Duquesne Family Office LLC | 469,880 | $4.1M | 0.09% | Share |
| 34 | BlackRock, Inc. | 192,781 | $4.0M | 0.00% | Share |
| 35 | TWO SIGMA INVESTMENTS, LP | 216,891 | $4.0M | 0.01% | Share |
| 36 | SEI INVESTMENTS CO | 488,623 | $4.0M | 0.00% | Share |
| 37 | GEODE CAPITAL MANAGEMENT, LLC | 192,494 | $4.0M | 0.00% | Share |
| 38 | BALYASNY ASSET MANAGEMENT L.P. | 203,741 | $4.0M | 0.01% | Share |
| 39 | EMERALD MUTUAL FUND ADVISERS TRUST | 171,429 | $3.6M | 0.17% | Share |
| 40 | Gillson Capital LP | 161,768 | $3.4M | 0.22% | Share |
| 41 | FJ Capital Management LLC | 153,491 | $3.2M | 0.35% | Share |
| 42 | Old West Investment Management, LLC | 356,146 | $3.1M | 0.56% | Share |
| 43 | STATE OF WISCONSIN INVESTMENT BOARD | 158,559 | $3.0M | 0.01% | Share |
| 44 | Walleye Capital LLC | 144,254 | $3.0M | 0.01% | Share |
| 45 | Interval Partners, LP | 163,783 | $3.0M | 0.05% | Share |
| 46 | STATE STREET CORP | 155,973 | $3.0M | 0.00% | Share |
| 47 | RENAISSANCE TECHNOLOGIES LLC | 185,400 | $3.0M | 0.00% | Share |
| 48 | ACADIAN ASSET MANAGEMENT LLC | 152,529 | $3.0M | 0.00% | Share |
| 49 | GOLDMAN SACHS GROUP INC | 428,356 | $3.0M | 0.00% | Share |
| 50 | GOLDMAN SACHS GROUP INC | 404,203 | $3.0M | 0.00% | Share |