| 1 | Essex Woodlands Management, Inc. | $122.9M | 13.0M | Hold |
| 2 | Juniper Investment Company, LLC | $65.5M | 6.9M | Hold |
| 3 | Nantahala Capital Management, LLC | $56.6M | 6.0M | Trimmed |
| 4 | BlackRock, Inc. | $32.4M | 3.4M | Added |
| 5 | VANGUARD GROUP INC | $30.4M | 3.2M | Added |
| 6 | ROYCE & ASSOCIATES LP | $17.3M | 1.8M | Added |
| 7 | GEODE CAPITAL MANAGEMENT, LLC | $12.9M | 1.4M | Added |
| 8 | AMERICAN CENTURY COMPANIES INC | $12.8M | 1.4M | Added |
| 9 | DIMENSIONAL FUND ADVISORS LP | $10.7M | 1.1M | Added |
| 10 | STATE STREET CORP | $10.4M | 1.1M | Added |
| 11 | Hillsdale Investment Management Inc. | $8.6M | 907,739 | Added |
| 12 | Engine Capital Management, LP | $8.5M | 900,558 | Added |
| 13 | WELLINGTON MANAGEMENT GROUP LLP | $7.1M | 748,358 | Added |
| 14 | RENAISSANCE TECHNOLOGIES LLC | $6.9M | 736,000 | Added |
| 15 | OBERWEIS ASSET MANAGEMENT INC/ | $6.7M | 709,714 | Added |
| 16 | GOLDMAN SACHS GROUP INC | $6.2M | 652,367 | Added |
| 17 | KENNEDY CAPITAL MANAGEMENT LLC | $4.4M | 466,563 | Trimmed |
| 18 | FMR LLC | $4.3M | 452,850 | Added |
| 19 | NORTHERN TRUST CORP | $4.2M | 443,824 | Added |
| 20 | PRUDENTIAL FINANCIAL INC | $3.7M | 394,520 | Added |
| 21 | Sixth Street Partners Management Company, L.P. | $3.7M | 391,859 | New |
| 22 | CHARLES SCHWAB INVESTMENT MANAGEMENT INC | $3.7M | 391,859 | Added |
| 23 | TOCQUEVILLE ASSET MANAGEMENT L.P. | $3.5M | 369,673 | Added |
| 24 | ACADIAN ASSET MANAGEMENT LLC | $3.2M | 336,998 | Added |
| 25 | AQR CAPITAL MANAGEMENT LLC | $3.1M | 326,124 | Trimmed |