| Port Capital LLC | 368,119 | $86,188,000 | 5.38% |
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| Durable Capital Partners LP | 2,297,979 | $538,025,823 | 4.92% |
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| Skaana Management L.P. | 69,600 | $16,295,448 | 4.01% |
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| GENEVA CAPITAL MANAGEMENT LLC | 583,320 | $136,572,816 | 2.88% |
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| Conestoga Capital Advisors, LLC | 692,132 | $162,048,865 | 2.78% |
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| WASATCH ADVISORS LP | 1,848,157 | $432,708,998 | 2.73% |
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| Carmel Capital Management L.L.C. | 20,103 | $4,706,715 | 2.67% |
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| SNYDER CAPITAL MANAGEMENT L P | 429,814 | $100,632,352 | 2.27% |
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| AMERICAN CAPITAL MANAGEMENT INC | 221,296 | $51,812,032 | 2.00% |
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| MOUNTAIN PACIFIC INVESTMENT ADVISERS INC/ID | 113,959 | $26,681,221 | 1.85% |
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| Skaana Management L.P. | 29,500 | $6,906,835 | 1.70% |
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| Advantage Alpha Capital Partners LP | 33,935 | $7,952,138 | 1.67% |
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| NEXT CENTURY GROWTH INVESTORS LLC | 64,469 | $15,094,126 | 1.64% |
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| Bridge City Capital, LLC | 13,608 | $3,186,041 | 1.61% |
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| GW&K Investment Management, LLC | 596,699 | $139,705 | 1.40% |
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| KAYNE ANDERSON RUDNICK INVESTMENT MANAGEMENT LLC | 1,998,612 | $467,935,119 | 1.34% |
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| Stephens Investment Management Group LLC | 328,774 | $76,975,857 | 1.26% |
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| Champlain Investment Partners, LLC | 643,145 | $150,579,539 | 0.98% |
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| Granahan Investment Management | 98,967 | $23,171,144 | 0.83% |
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| OSTERWEIS CAPITAL MANAGEMENT INC | 35,210 | $8,243,717 | 0.60% |
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