| 1 | WASATCH ADVISORS LP | 2,765,648 | $37.3M | 0.22% | Share |
| 2 | VANGUARD GROUP INC | 1,802,585 | $24.3M | 0.00% | Share |
| 3 | NEXT CENTURY GROWTH INVESTORS LLC | 1,691,395 | $22.8M | 1.58% | Share |
| 4 | BlackRock, Inc. | 1,346,934 | $18.0M | 0.00% | Share |
| 5 | First Eagle Investment Management, LLC | 1,277,470 | $17.2M | 0.03% | Share |
| 6 | JANUS HENDERSON GROUP PLC | 1,328,120 | $17.0M | 0.01% | Share |
| 7 | Portolan Capital Management, LLC | 1,245,767 | $16.8M | 0.90% | Share |
| 8 | Park West Asset Management LLC | 800,000 | $10.8M | 0.90% | Share |
| 9 | Grandeur Peak Global Advisors, LLC | 766,596 | $10.3M | 1.39% | Share |
| 10 | GEODE CAPITAL MANAGEMENT, LLC | 772,433 | $10.0M | 0.00% | Share |
| 11 | DRIEHAUS CAPITAL MANAGEMENT LLC | 708,458 | $9.6M | 0.06% | Share |
| 12 | BARD ASSOCIATES INC | 700,788 | $9.5M | 2.43% | Share |
| 13 | STATE STREET CORP | 734,201 | $9.0M | 0.00% | Share |
| 14 | SILVERCREST ASSET MANAGEMENT GROUP LLC | 664,589 | $8.0M | 0.05% | Share |
| 15 | BlackRock, Inc. | 571,329 | $7.0M | 0.00% | Share |
| 16 | Pillsbury Lake Capital LLC | 493,184 | $6.7M | 2.32% | Share |
| 17 | Uniplan Investment Counsel, Inc. | 483,224 | $6.5M | 1.83% | Share |
| 18 | BROWN CAPITAL MANAGEMENT LLC | 469,538 | $6.3M | 0.52% | Share |
| 19 | DIMENSIONAL FUND ADVISORS LP | 473,986 | $6.0M | 0.00% | Share |
| 20 | DIAMOND HILL CAPITAL MANAGEMENT INC | 477,427 | $6.0M | 0.03% | Share |
| 21 | NICHOLAS COMPANY, INC. | 394,601 | $5.3M | 0.09% | Share |
| 22 | ArrowMark Colorado Holdings LLC | 380,000 | $5.1M | 0.11% | Share |
| 23 | Alyeska Investment Group, L.P. | 400,000 | $5.0M | 0.01% | Share |
| 24 | ESSEX INVESTMENT MANAGEMENT CO LLC | 335,624 | $4.5M | 0.69% | Share |
| 25 | Manatuck Hill Partners, LLC | 335,500 | $4.5M | 1.58% | Share |
| 26 | Annex Advisory Services, LLC | 297,829 | $4.0M | 0.08% | Share |
| 27 | RENAISSANCE TECHNOLOGIES LLC | 341,300 | $4.0M | 0.01% | Share |
| 28 | THOMPSON SIEGEL & WALMSLEY LLC | 264,598 | $3.6M | 0.06% | Share |
| 29 | Calamos Advisors LLC | 259,175 | $3.5M | 0.01% | Share |
| 30 | VANGUARD GROUP INC | 255,423 | $3.4M | 0.00% | Share |
| 31 | GILDER GAGNON HOWE & CO LLC | 245,780 | $3.3M | 0.03% | Share |
| 32 | VELA Investment Management, LLC | 226,551 | $3.1M | 0.72% | Share |
| 33 | NORTHERN TRUST CORP | 265,670 | $3.0M | 0.00% | Share |
| 34 | ROYCE & ASSOCIATES LP | 210,050 | $2.8M | 0.03% | Share |
| 35 | HEARTLAND ADVISORS INC | 200,000 | $2.7M | 0.15% | Share |
| 36 | Expect Equity LLC | 191,023 | $2.6M | 2.49% | Share |
| 37 | Conestoga Capital Advisors, LLC | 185,700 | $2.5M | 0.04% | Share |
| 38 | RICE HALL JAMES & ASSOCIATES, LLC | 181,756 | $2.5M | 0.13% | Share |
| 39 | UBS Group AG | 174,143 | $2.3M | 0.00% | Share |
| 40 | GatePass Capital, LLC | 171,185 | $2.3M | 1.19% | Share |
| 41 | PUNCH & ASSOCIATES INVESTMENT MANAGEMENT, INC. | 165,000 | $2.2M | 0.13% | Share |
| 42 | CenterBook Partners LP | 206,608 | $2.0M | 0.10% | Share |
| 43 | JPMORGAN CHASE & CO | 194,600 | $2.0M | 0.00% | Share |
| 44 | Russell Investments Group, Ltd. | 161,833 | $2.0M | 0.00% | Share |
| 45 | Russell Investments Group, Ltd. | 185,277 | $2.0M | 0.00% | Share |
| 46 | BANK OF AMERICA CORP /DE/ | 221,925 | $2.0M | 0.00% | Share |
| 47 | SEI INVESTMENTS CO | 159,273 | $2.0M | 0.00% | Share |
| 48 | RAYMOND JAMES FINANCIAL INC | 174,477 | $2.0M | 0.00% | Share |
| 49 | D.A. DAVIDSON & CO. | 138,346 | $1.9M | 0.01% | Share |
| 50 | WESBANCO BANK INC | 136,500 | $1.8M | 0.05% | Share |