| TOP INSTITUTIONAL HOLDERS |
| Holder | Shares | % Out | Value* | Reported | | Invesco Ltd. | 814,000 | 9.77 | $4,566,540 | 30-Sep-09 | | FEDERATED INVESTORS, INC. | 696,676 | 8.36 | $3,908,352 | 30-Sep-09 | | DIMENSIONAL FUND ADVISORS LP | 214,635 | 2.58 | $1,204,102 | 30-Sep-09 | | ESSEX INVESTMENT MANAGEMENT CO INC | 105,289 | 1.26 | $590,671 | 30-Sep-09 | | VANGUARD GROUP, INC. (THE) | 48,702 | .58 | $273,218 | 30-Sep-09 | | MORGAN STANLEY | 48,376 | .58 | $271,389 | 30-Sep-09 | | BRIDGEWAY CAPITAL MANAGEMENT, INC. | 42,186 | .51 | $236,663 | 30-Sep-09 | | CALPERS (CALIFORNIA-PUBLIC EMPLOYEES RETIREMENT SYSTEM) | 39,300 | .47 | $216,150 | 30-Jun-09 | | NORTHERN TRUST CORPORATION | 34,136 | .41 | $187,748 | 30-Jun-09 | | Bank of New York Mellon Corporation | 33,945 | .41 | $190,431 | 30-Sep-09 |
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| Holder | Shares | % Out | Value* | Reported | | Powershares Exhg Traded Fd Tr-POWERSHARES WILDERHILL CLEAN E | 662,132 | 7.94 | $3,608,619 | 31-Jul-09 | | FEDERATED KAUFMANN SMALL CAP FUND | 500,620 | 6.01 | $2,728,379 | 31-Jul-09 | | Advanced Series Tr-AST/Federated Aggressive Growth Port | 196,056 | 2.35 | $1,078,308 | 30-Jun-09 | | DFA U.S. MICRO CAP SERIES | 87,042 | 1.04 | $609,294 | 30-Apr-09 | | BRIDGEWAY FDS INC-ULTRA SMALL COMPANY MARKET FD | 55,700 | .67 | $306,350 | 30-Jun-09 | | VANGUARD EXTENDED MARKET INDEX FUND | 48,102 | .58 | $264,561 | 30-Jun-09 | | DFA U.S. SMALL CAP SERIES | 24,326 | .29 | $170,282 | 30-Apr-09 | | OBERWEIS MICRO-CAP PORTFOLIO | 23,300 | .28 | $128,150 | 30-Jun-09 | | Valic Company I-Small Cap Fd | 19,300 | .23 | $75,077 | 31-Aug-09 | | DFA TAX-MANAGED U.S. SMALL CAP PORTFOLIO | 17,686 | .21 | $96,388 | 31-Jul-09 |
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Value shown is computed using the security's price on the report date given.
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