| 1 | Senvest Management, LLC | 4,141,355 | $59.6M | 1.85% | Share |
| 2 | MORGAN STANLEY | 3,892,499 | $55.0M | 0.00% | Share |
| 3 | DISCIPLINED GROWTH INVESTORS INC /MN | 3,034,591 | $43.6M | 0.84% | Share |
| 4 | Artisan Partners Limited Partnership | 2,647,804 | $38.0M | 0.06% | Share |
| 5 | Granahan Investment Management, LLC | 2,569,663 | $37.0M | 1.58% | Share |
| 6 | Chicago Capital, LLC | 2,476,363 | $35.6M | 0.88% | Share |
| 7 | BlackRock, Inc. | 2,096,253 | $30.0M | 0.00% | Share |
| 8 | Stephens Investment Management Group LLC | 1,475,945 | $21.2M | 0.28% | Share |
| 9 | Invenomic Capital Management LP | 1,397,950 | $20.1M | 0.94% | Share |
| 10 | SCHRODER INVESTMENT MANAGEMENT GROUP | 1,148,895 | $16.0M | 0.01% | Share |
| 11 | DUDLEY & SHANLEY, INC. | 901,960 | $13.0M | 2.08% | Share |
| 12 | THOMPSON INVESTMENT MANAGEMENT, INC. | 876,674 | $12.6M | 1.58% | Share |
| 13 | MEITAV INVESTMENT HOUSE LTD | 877,015 | $12.0M | 0.14% | Share |
| 14 | Medina Value Partners, LLC | 712,972 | $10.3M | 2.40% | Share |
| 15 | Polar Asset Management Partners Inc. | 744,644 | $10.0M | 0.13% | Share |
| 16 | LHM, INC. | 693,598 | $10.0M | 3.71% | Share |
| 17 | STATE STREET CORP | 652,594 | $9.0M | 0.00% | Share |
| 18 | JANUS HENDERSON GROUP PLC | 675,725 | $9.0M | 0.00% | Share |
| 19 | D. E. Shaw & Co., Inc. | 669,602 | $9.0M | 0.00% | Share |
| 20 | BNP Paribas Asset Management Holding S.A. | 593,291 | $8.0M | 0.01% | Share |
| 21 | BAILLIE GIFFORD & CO | 493,151 | $7.1M | 0.01% | Share |
| 22 | BAILLIE GIFFORD & CO | 461,271 | $6.6M | 0.01% | Share |
| 23 | Assenagon Asset Management S.A. | 453,250 | $6.5M | 0.01% | Share |
| 24 | ArrowMark Colorado Holdings LLC | 447,000 | $6.4M | 0.14% | Share |
| 25 | GILDER GAGNON HOWE & CO LLC | 441,391 | $6.3M | 0.07% | Share |
| 26 | BlackRock, Inc. | 432,392 | $6.0M | 0.00% | Share |
| 27 | BLAIR WILLIAM & CO/IL | 454,428 | $6.0M | 0.02% | Share |
| 28 | BAILLIE GIFFORD & CO | 400,932 | $5.8M | 0.00% | Share |
| 29 | KORNITZER CAPITAL MANAGEMENT INC /KS | 366,677 | $5.3M | 0.11% | Share |
| 30 | ACADIAN ASSET MANAGEMENT LLC | 351,634 | $5.0M | 0.01% | Share |
| 31 | Silverberg Bernstein Capital Management LLC | 331,256 | $4.8M | 2.75% | Share |
| 32 | AMERICAN CAPITAL MANAGEMENT INC | 284,628 | $4.1M | 0.18% | Share |
| 33 | Pathstone Holdings, LLC | 265,502 | $4.0M | 0.02% | Share |
| 34 | SILVERCREST ASSET MANAGEMENT GROUP LLC | 295,175 | $4.0M | 0.03% | Share |
| 35 | SUSQUEHANNA INTERNATIONAL GROUP, LLP | 280,900 | $4.0M | 0.00% | Put |
| 36 | Man Group plc | 286,695 | $4.0M | 0.01% | Share |
| 37 | BAILLIE GIFFORD & CO | 209,725 | $3.0M | 0.00% | Share |
| 38 | ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | 238,154 | $3.0M | 0.00% | Share |
| 39 | JANE STREET GROUP, LLC | 210,350 | $3.0M | 0.00% | Share |
| 40 | MOODY NATIONAL BANK TRUST DIVISION | 189,355 | $2.7M | 0.26% | Share |
| 41 | KENNEDY CAPITAL MANAGEMENT LLC | 182,360 | $2.6M | 0.06% | Share |
| 42 | WASATCH ADVISORS LP | 178,065 | $2.6M | 0.02% | Share |
| 43 | Taylor Frigon Capital Management LLC | 155,182 | $2.5M | 1.24% | Share |
| 44 | ICON ADVISERS INC/CO | 165,000 | $2.4M | 0.51% | Share |
| 45 | Trexquant Investment LP | 159,274 | $2.3M | 0.02% | Share |
| 46 | Point72 Asset Management, L.P. | 165,394 | $2.0M | 0.00% | Share |
| 47 | SEI INVESTMENTS CO | 142,179 | $2.0M | 0.00% | Share |
| 48 | NEW YORK STATE COMMON RETIREMENT FUND | 205,288 | $2.0M | 0.00% | Share |
| 49 | Atom Investors LP | 163,740 | $2.0M | 0.16% | Share |
| 50 | MILLENNIUM MANAGEMENT LLC | 174,906 | $2.0M | 0.00% | Share |