| Trigran Investments, Inc. | 1,607,394 | $90,833,835 | 8.77% |
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| Pembroke Management, LTD | 436,741 | $24,680,234 | 2.66% |
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| Van Berkom & Associates Inc. | 1,059,122 | $59,851 | 2.17% |
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| Roubaix Capital, LLC | 47,766 | $2,699,257 | 1.98% |
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| Global Alpha Capital Management Ltd. | 291,973 | $16,499,394 | 1.55% |
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| DISCIPLINED GROWTH INVESTORS INC /MN | 1,117,038 | $63,123,817 | 1.42% |
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| Mesirow Institutional Investment Management, Inc. | 189,683 | $10,718,986 | 1.10% |
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| Bouvel Investment Partners, LLC | 26,424 | $1,493,220 | 0.82% |
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| Bridge City Capital, LLC | 28,484 | $1,609,631 | 0.76% |
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| Guinness Atkinson Asset Management Inc | 24,708 | $1,396,249 | 0.74% |
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| Guinness Asset Management LTD | 552,763 | $31,238,816 | 0.72% |
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| PUNCH & ASSOCIATES INVESTMENT MANAGEMENT, INC. | 152,376 | $8,610,753 | 0.52% |
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| CHATHAM CAPITAL GROUP, INC. | 43,833 | $2,477,003 | 0.52% |
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| Telemark Asset Management, LLC | 52,406 | $2,961,463 | 0.40% |
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| Matisse Capital | 9,446 | $533,793 | 0.33% |
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| CONNORS INVESTOR SERVICES INC | 49,070 | $2,773 | 0.31% |
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| Robeco Schweiz AG | 373,440 | $21,103,094 | 0.31% |
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| FULLER & THALER ASSET MANAGEMENT, INC. | 961,141 | $54,314,077 | 0.31% |
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| GW&K Investment Management, LLC | 562,022 | $31,760 | 0.30% |
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| Edgestream Partners, L.P. | 48,921 | $2,764,526 | 0.25% |
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