| DISCIPLINED GROWTH INVESTORS INC /MN | 18,910,052 | $77.7m | 1.3% |
| BlackRock, Inc. | 12,121,197 | $49.8m | 0.0% |
| Working Capital Advisors (UK) Ltd. | 8,155,789 | $33.5m | 57.9% |
| RENAISSANCE TECHNOLOGIES LLC | 6,003,658 | $24.7m | 0.0% |
| VANGUARD CAPITAL MANAGEMENT LLC | 4,959,202 | $20.4m | 0.0% |
| AQR CAPITAL MANAGEMENT LLC | 4,843,056 | $19.9m | 0.0% |
| STATE STREET CORP | 3,503,504 | $14.4m | 0.0% |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | 3,192,908 | $13.1m | 0.0% |
| GEODE CAPITAL MANAGEMENT, LLC | 3,146,916 | $12.9m | 0.0% |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 3,042,880 | $12.5m | 0.0% |
| Archon Capital Management LLC | 3,009,710 | $12.4m | 5.0% |
| DIMENSIONAL FUND ADVISORS LP | 2,507,619 | $10.3m | 0.0% |
| JACOBS LEVY EQUITY MANAGEMENT, INC | 2,177,945 | $9.0m | 0.0% |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 2,030,170 | $8.3m | 0.0% |
| GOLDMAN SACHS GROUP INC | 1,926,884 | $7.9m | 0.0% |
| Bank of New York Mellon Corp | 1,563,700 | $6.4m | 0.0% |
| Hodges Capital Management Inc. | 1,378,450 | $5.7m | 0.4% |
| Nuveen, LLC | 1,255,074 | $5.2m | 0.0% |
| Focus Partners Wealth | 1,237,004 | $5.1m | 0.0% |
| Qube Research & Technologies Ltd | 1,172,208 | $4.8m | 0.0% |
| UBS Group AG | 1,107,121 | $4.6m | 0.0% |
| NORTHERN TRUST CORP | 982,489 | $4.0m | 0.0% |
| D. E. Shaw & Co., Inc. | 913,623 | $3.8m | 0.0% |
| FMR LLC | 842,641 | $3.5m | 0.0% |
| CAPTRUST FINANCIAL ADVISORS | 817,056 | $3.4m | 0.0% |