| AIGH Capital Management LLC | 317,544 | $9,907,373 | 4.69% |
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| B. Riley Asset Management, LLC | 156,278 | $4,875,874 | 1.94% |
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| Aristides Capital LLC | 122,472 | $3,821,126 | 1.66% |
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| PenderFund Capital Management Ltd. | 129,524 | $5,489 | 1.64% |
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| PARADIGM CAPITAL MANAGEMENT INC/NY | 877,812 | $27,387,734 | 1.57% |
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| Mesirow Financial Investment Management, Inc. | 11,521 | $359,455 | 1.56% |
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| Worth Venture Partners, LLC | 75,046 | $2,341,435 | 1.39% |
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| Trellus Management Company, LLC | 31,500 | $982,800 | 1.35% |
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| PUNCH & ASSOCIATES INVESTMENT MANAGEMENT, INC. | 497,383 | $15,518,350 | 0.99% |
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| SG Capital Management LLC | 68,592 | $2,140,070 | 0.80% |
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| WHITE PINE CAPITAL LLC | 58,770 | $1,833,624 | 0.74% |
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| Herald Investment Management Ltd | 110,000 | $3,426,500 | 0.73% |
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| AWM Investment Company, Inc. | 123,639 | $3,857,537 | 0.57% |
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| OBERWEIS ASSET MANAGEMENT INC/ | 125,307 | $3,909,578 | 0.42% |
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| PERRITT CAPITAL MANAGEMENT INC | 21,950 | $684,840 | 0.40% |
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| Hodges Capital Management Inc. | 100,435 | $3,134 | 0.37% |
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| Watershed Asset Management, L.L.C. | 8,505 | $265,356 | 0.31% |
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| Kent Lake Capital LLC | 26,021 | $811,855 | 0.31% |
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| GLOBEFLEX CAPITAL L P | 68,878 | $2,148,994 | 0.25% |
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| First Dallas Securities Inc. | 34,300 | $1,070 | 0.24% |
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