| AIGH Capital Management LLC | 943,857 | $2,416,274 | 1.14% |
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| Nantahala Capital Management | 4,670,000 | $11,955,200 | 1.02% |
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| Stonepine Capital Management, LLC | 951,197 | $2,435,064 | 0.81% |
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| PERRITT CAPITAL MANAGEMENT INC | 362,184 | $927,191 | 0.54% |
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| CM Management, LLC | 167,640 | $429,158 | 0.46% |
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| ALETHEA CAPITAL MANAGEMENT, LLC | 133,793 | $342,510 | 0.42% |
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| Worth Venture Partners, LLC | 230,773 | $590,779 | 0.35% |
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| SummerHaven Investment Management, LLC | 124,864 | $319,652 | 0.24% |
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| TSP Capital Management Group, LLC | 157,800 | $403,968 | 0.16% |
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| ARMISTICE CAPITAL, LLC | 3,924,000 | $10,045,440 | 0.15% |
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| J. Goldman & Co LP | 1,097,452 | $2,809,477 | 0.10% |
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| Diametric Capital, LP | 57,788 | $147,937 | 0.06% |
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| THOMPSON SIEGEL & WALMSLEY LLC | 1,225,233 | $3,137 | 0.05% |
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| Sargent Investment Group, LLC | 80,546 | $206,199 | 0.05% |
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| WHITE PINE CAPITAL LLC | 48,777 | $124,869 | 0.05% |
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| KENNEDY CAPITAL MANAGEMENT LLC | 794,087 | $2,032,863 | 0.05% |
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| BRIDGEWAY CAPITAL MANAGEMENT, LLC | 752,093 | $1,925,358 | 0.05% |
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| CORNERCAP INVESTMENT COUNSEL INC | 84,862 | $217,247 | 0.04% |
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| DENALI ADVISORS LLC | 42,700 | $109,312 | 0.04% |
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| WINTON GROUP Ltd | 148,556 | $380,303 | 0.03% |
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