| Greenhouse Funds LLLP | 719,450 | $49,656,439 | 3.67% |
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| RK Capital | 204,100 | $14,086,982 | 3.33% |
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| Conestoga Capital Advisors, LLC | 2,139,943 | $147,698,866 | 2.54% |
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| Aristotle Capital Boston, LLC | 906,763 | $62,584,786 | 2.02% |
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| Redwood Investments, LLC | 196,660 | $13,573,473 | 1.84% |
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| Channing Capital Management, LLC | 708,157 | $48,876,996 | 1.61% |
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| ArrowMark Colorado Holdings LLC | 1,565,423 | $108,045,495 | 1.32% |
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| EMERALD MUTUAL FUND ADVISERS TRUST | 306,965 | $21,186,724 | 1.28% |
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| EMERALD ADVISERS, LLC | 377,935 | $26,085,074 | 1.26% |
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| SECTORAL ASSET MANAGEMENT INC | 79,000 | $5,452,580 | 1.06% |
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| WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC | 3,895,695 | $268,880,869 | 0.89% |
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| Mesirow Institutional Investment Management, Inc. | 121,045 | $8,354,526 | 0.85% |
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| MARTIN & CO INC /TN/ | 45,450 | $3,136,959 | 0.82% |
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| OBERWEIS ASSET MANAGEMENT INC/ | 95,660 | $6,602,453 | 0.70% |
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| FULLER & THALER ASSET MANAGEMENT, INC. | 1,388,905 | $95,862,220 | 0.55% |
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| WESTWOOD HOLDINGS GROUP INC | 839,903 | $57,970 | 0.54% |
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| Ziegler Capital Management, LLC | 158,629 | $10,948,254 | 0.44% |
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| Westover Capital Advisors, LLC | 16,445 | $1,135,033 | 0.41% |
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| BRYN MAWR TRUST Co | 105,561 | $7,285,831 | 0.32% |
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| AMI ASSET MANAGEMENT CORP | 70,937 | $4,896,104 | 0.30% |
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