Notable Holders of Active Power, Inc. (ACPW)
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* Does Not Fully Represent All Holders
| Fund | Title | Shares | % Owned | Source |
|---|---|---|---|---|
| THOMSON HORSTMANN & BRYANT INC | COM | 5,180,930 | 6.46% | 13F |
| SOUND ENERGY PARTNERS, INC. | COM | 4,591,468 | 5.73% | 13F |
| RHO CAPITAL PARTNERS INC | COM | 3,702,524 | 4.62% | 13F |
| BlackRock Institutional Trust Company, N.A. | COM | 2,735,414 | 3.41% | 13F |
| Impax Asset Management LTD | COMMON | 2,217,773 | 2.77% | 13F |
| OBERWEIS ASSET MANAGEMENT INC/ | COM | 2,028,020 | 2.53% | 13F |
| VANGUARD GROUP INC | COM | 1,780,927 | 2.22% | 13F |
| BlackRock Fund Advisors | COM | 1,713,906 | 2.14% | 13F |
| DIMENSIONAL FUND ADVISORS LP | COM | 1,645,858 | 2.05% | 13F |
| MARXE AUSTIN W & GREENHOUSE DAVID M | COMMON | 1,143,500 | 1.43% | 13F |
| NORTHERN TRUST CORP | COM | 999,113 | 1.25% | 13F |
| UBS GLOBAL ASSET MANAGEMENT AMERICAS INC | EQTY US OTC | 799,117 | 1.00% | 13F |
| Savitr Capital, LLC | COM | 473,230 | 0.59% | 13F |
| TIAA CREF INVESTMENT MANAGEMENT LLC | COM | 446,840 | 0.56% | 13F |
| UBS AG | COM | 420,058 | 0.52% | 13F |
| GEODE CAPITAL MANAGEMENT LLC | COM | 265,665 | 0.33% | 13F |
| DIKER MANAGEMENT LLC | COM | 262,300 | 0.33% | 13F |
| BlackRock Investment Management, LLC | COM | 218,750 | 0.27% | 13F |
| DEUTSCHE BANK AG\ | COM | 182,019 | 0.23% | 13F |
| PRESCOTT GROUP CAPITAL MANAGEMENT LLC | COM | 178,536 | 0.22% | 13F |
| Goldman Sachs Asset Management, L.P. | CMN | 116,386 | 0.15% | 13F |
| TFS CAPITAL LLC | COM | 107,227 | 0.13% | 13F |
| GABELLI FUNDS LLC | COM | 100,000 | 0.12% | 13F |
| Invesco Ltd. | COMMON | 76,482 | 0.10% | 13F |
| TEACHERS ADVISORS INC | COM | 75,744 | 0.09% | 13F |
| GMT CAPITAL CORP | COM | 75,370 | 0.09% | 13F |
| First Allied Securities, Inc. | COM | 70,000 | 0.09% | 13F |
| ING INVESTMENT MANAGEMENT CO | COM | 65,700 | 0.08% | 13F |
| Manulife Asset Management (North America) Ltd | COM | 63,716 | 0.08% | 13F |
| CAMDEN PARTNERS HOLDINGS LLC | COM | 60,000 | 0.07% | 13F |
| AMERICAN INTERNATIONAL GROUP INC | COM | 58,427 | 0.07% | 13F |
| BLACKROCK ADVISORS LLC | COM | 57,235 | 0.07% | 13F |
| AQR CAPITAL MANAGEMENT LLC | COM | 46,100 | 0.06% | 13F |
| GUGGENHEIM CAPITAL LLC | COM | 43,539 | 0.05% | 13F |
| REGIONS FINANCIAL CORP | COM | 40,000 | 0.05% | 13F |
| RHJ International SA | COM | 28,000 | 0.03% | 13F |
| CREDIT SUISSE AG/ | COM | 23,963 | 0.03% | 13F |
| KNIGHT CAPITAL GROUP, INC. | COM | 14,220 | 0.02% | 13F |
| WELLS FARGO & CO/MN | EQUITY | 14,205 | 0.02% | 13F |
| SG Americas Securities, LLC | 10,497 | 0.01% | 13F | |
| BESSEMER GROUP INC | SC | 10,140 | 0.01% | 13F |
| Summit Asset Management, LLC | COM | 10,011 | 0.01% | 13F |
