| BlackRock, Inc. | 4,964,479 | $838.7m | 0.0% |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 2,221,267 | $375.3m | 0.0% |
| VANGUARD CAPITAL MANAGEMENT LLC | 1,445,369 | $244.2m | 0.0% |
| STATE STREET CORP | 1,281,552 | $216.5m | 0.0% |
| GEODE CAPITAL MANAGEMENT, LLC | 1,122,146 | $189.6m | 0.0% |
| Conestoga Capital Advisors, LLC | 1,087,871 | $183.8m | 4.0% |
| WASATCH ADVISORS LP | 1,050,780 | $177.5m | 1.2% |
| MORGAN STANLEY | 834,445 | $141.0m | 0.0% |
| GENEVA CAPITAL MANAGEMENT LLC | 683,102 | $115.4m | 2.6% |
| FIRST TRUST ADVISORS LP | 617,233 | $104.3m | 0.1% |
| DIMENSIONAL FUND ADVISORS LP | 610,047 | $103.1m | 0.0% |
| FMR LLC | 560,255 | $94.7m | 0.0% |
| CONGRESS ASSET MANAGEMENT CO | 502,571 | $84.9m | 0.5% |
| TWO SIGMA INVESTMENTS, LP | 502,038 | $84.8m | 0.1% |
| SCHRODER INVESTMENT MANAGEMENT GROUP | 440,418 | $74.5m | 0.1% |
| Nuveen, LLC | 414,367 | $70.0m | 0.0% |
| NORGES BANK | 411,876 | $69.6m | 0.0% |
| NORTHERN TRUST CORP | 384,172 | $64.9m | 0.0% |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 374,613 | $63.3m | 0.0% |
| JPMORGAN CHASE & CO | 341,653 | $58.1m | 0.0% |
| WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC | 314,063 | $53.1m | 0.2% |
| Thrivent Financial for Lutherans | 289,858 | $49.0m | 0.1% |
| GOLDMAN SACHS GROUP INC | 272,008 | $46.0m | 0.0% |
| Stephens Investment Management Group LLC | 270,501 | $45.7m | 0.5% |
| Clearbridge Investments, LLC | 243,769 | $41.2m | 0.0% |