| 1 | BlackRock, Inc. | 2,715,329 | $530.0M | 0.01% | Share |
| 2 | VANGUARD GROUP INC | 2,664,359 | $520.6M | 0.01% | Share |
| 3 | STATE STREET CORP | 1,005,087 | $196.0M | 0.01% | Share |
| 4 | Capital World Investors | 902,956 | $176.0M | 0.02% | Share |
| 5 | Conestoga Capital Advisors, LLC | 775,596 | $151.5M | 2.55% | Share |
| 6 | NORTHWESTERN MUTUAL WEALTH MANAGEMENT CO | 2,938,911 | $148.7M | 0.09% | Share |
| 7 | BlackRock, Inc. | 762,204 | $148.0M | 0.00% | Share |
| 8 | Invesco Ltd. | 703,834 | $137.5M | 0.02% | Share |
| 9 | Neuberger Berman Group LLC | 684,648 | $133.0M | 0.10% | Share |
| 10 | DIMENSIONAL FUND ADVISORS LP | 633,104 | $123.0M | 0.03% | Share |
| 11 | GEODE CAPITAL MANAGEMENT, LLC | 550,632 | $107.0M | 0.01% | Share |
| 12 | GENEVA CAPITAL MANAGEMENT LLC | 537,788 | $105.1M | 1.97% | Share |
| 13 | SILVERCREST ASSET MANAGEMENT GROUP LLC | 472,150 | $92.0M | 0.63% | Share |
| 14 | NOMURA ASSET MANAGEMENT INTERNATIONAL INC. | 450,019 | $87.0M | 0.13% | Share |
| 15 | ALLIANCEBERNSTEIN L.P. | 388,753 | $75.0M | 0.02% | Share |
| 16 | ROYCE & ASSOCIATES LP | 362,706 | $70.9M | 0.72% | Share |
| 17 | Invesco Ltd. | 324,984 | $63.5M | 0.01% | Share |
| 18 | WELLINGTON MANAGEMENT GROUP LLP | 302,046 | $59.0M | 0.01% | Share |
| 19 | Hood River Capital Management LLC | 300,195 | $58.7M | 0.64% | Share |
| 20 | CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 300,658 | $58.0M | 0.01% | Share |
| 21 | LOOMIS SAYLES & CO L P | 266,056 | $51.0M | 0.06% | Share |
| 22 | GENEVA CAPITAL MANAGEMENT LLC | 250,437 | $48.9M | 0.92% | Share |
| 23 | GOLDMAN SACHS GROUP INC | 233,188 | $45.0M | 0.01% | Share |
| 24 | NORTHERN TRUST CORP | 232,774 | $45.0M | 0.01% | Share |
| 25 | DRIEHAUS CAPITAL MANAGEMENT LLC | 225,441 | $44.0M | 0.30% | Share |
| 26 | FULLER & THALER ASSET MANAGEMENT, INC. | 188,389 | $36.0M | 0.12% | Share |
| 27 | VANGUARD GROUP INC | 177,417 | $34.7M | 0.00% | Share |
| 28 | Nuveen, LLC | 176,963 | $34.0M | 0.01% | Share |
| 29 | EMERALD ADVISERS, LLC | 166,679 | $32.6M | 1.00% | Share |
| 30 | MORGAN STANLEY | 165,567 | $32.0M | 0.00% | Share |
| 31 | Tributary Capital Management, LLC | 145,136 | $28.4M | 2.79% | Share |
| 32 | PUBLIC EMPLOYEES RETIREMENT ASSOCIATION OF COLORADO | 146,797 | $28.0M | 0.10% | Share |
| 33 | Rockefeller Capital Management L.P. | 147,491 | $28.0M | 0.05% | Share |
| 34 | PRINCIPAL FINANCIAL GROUP INC | 143,170 | $28.0M | 0.01% | Share |
| 35 | FORT WASHINGTON INVESTMENT ADVISORS INC /OH/ | 140,255 | $27.4M | 0.15% | Share |
| 36 | CRAWFORD INVESTMENT COUNSEL INC | 130,737 | $25.0M | 0.42% | Share |
| 37 | PRICE T ROWE ASSOCIATES INC /MD/ | 124,848 | $24.0M | 0.00% | Share |
| 38 | ROYAL BANK OF CANADA | 126,771 | $24.0M | 0.00% | Share |
| 39 | Nuveen, LLC | 127,314 | $24.0M | 0.01% | Share |
| 40 | AMERIPRISE FINANCIAL INC | 117,829 | $23.0M | 0.01% | Share |
| 41 | FEDERATED HERMES, INC. | 118,636 | $23.0M | 0.04% | Share |
| 42 | MORGAN STANLEY | 114,741 | $22.0M | 0.00% | Share |
| 43 | DF DENT & CO INC | 107,812 | $21.0M | 0.30% | Share |
| 44 | Qube Research & Technologies Ltd | 103,313 | $20.0M | 0.02% | Share |
| 45 | PUBLIC SECTOR PENSION INVESTMENT BOARD | 106,251 | $20.0M | 0.07% | Share |
| 46 | EMERALD MUTUAL FUND ADVISERS TRUST | 98,502 | $19.2M | 0.94% | Share |
| 47 | WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC | 97,783 | $19.1M | 0.05% | Share |
| 48 | SCHRODER INVESTMENT MANAGEMENT GROUP | 101,471 | $19.0M | 0.01% | Share |
| 49 | BlackRock, Inc. | 97,952 | $19.0M | 0.00% | Share |
| 50 | GHP Investment Advisors, Inc. | 95,250 | $18.6M | 0.77% | Share |