| BlackRock, Inc. | 3,272,973 | $314.1m | 0.0% |
| Conestoga Capital Advisors, LLC | 1,367,513 | $131.2m | 2.9% |
| FIRST TRUST ADVISORS LP | 1,093,502 | $104.9m | 0.1% |
| CONGRESS ASSET MANAGEMENT CO | 963,706 | $92.5m | 0.6% |
| VANGUARD CAPITAL MANAGEMENT LLC | 953,437 | $91.5m | 0.0% |
| STATE STREET CORP | 901,416 | $86.5m | 0.0% |
| Copeland Capital Management, LLC | 839,463 | $80.6m | 1.7% |
| GEODE CAPITAL MANAGEMENT, LLC | 788,835 | $75.7m | 0.0% |
| PRICE T ROWE ASSOCIATES INC /MD/ | 755,142 | $72.5m | 0.0% |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 604,833 | $58.0m | 0.0% |
| GENEVA CAPITAL MANAGEMENT LLC | 589,064 | $56.5m | 1.3% |
| DIMENSIONAL FUND ADVISORS LP | 493,889 | $47.4m | 0.0% |
| GOLDMAN SACHS GROUP INC | 473,194 | $45.4m | 0.0% |
| Invesco Ltd. | 448,389 | $43.0m | 0.0% |
| MORGAN STANLEY | 351,083 | $33.7m | 0.0% |
| NORTHERN TRUST CORP | 333,325 | $32.0m | 0.0% |
| TWO SIGMA INVESTMENTS, LP | 316,528 | $30.4m | 0.0% |
| ROYAL BANK OF CANADA | 308,765 | $29.6m | 0.0% |
| Annex Advisory Services, LLC | 248,253 | $23.8m | 0.4% |
| UBS Group AG | 247,804 | $23.8m | 0.0% |
| ENVESTNET ASSET MANAGEMENT INC | 244,729 | $23.5m | 0.0% |
| KENNEDY CAPITAL MANAGEMENT LLC | 228,934 | $22.0m | 0.4% |
| KAYNE ANDERSON RUDNICK INVESTMENT MANAGEMENT LLC | 220,497 | $21.2m | 0.1% |
| BESSEMER GROUP INC | 220,296 | $21.1m | 0.0% |
| Ranger Investment Management, L.P. | 219,307 | $21.0m | 1.3% |