| TOP INSTITUTIONAL HOLDERS |
| Holder | Shares | % Out | Value* | Reported | | Invesco Ltd. | 4,878,531 | 5.81 | $12,830,536 | 30-Sep-09 | | BlackRock Group Limited | 2,931,100 | 3.49 | $7,708,793 | 30-Sep-09 | | RENAISSANCE TECHNOLOGIES, LLC | 1,296,400 | 1.54 | $3,409,532 | 30-Sep-09 | | Impax Asset Management Ltd. | 1,127,214 | 1.34 | $2,964,572 | 30-Sep-09 | | KBC Group NV | 784,565 | .93 | $1,412,217 | 30-Jun-09 | | Claymore Advisors, LLC | 657,336 | .78 | $1,728,793 | 30-Sep-09 | | PRESCOTT GROUP CAPITAL MANAGEMENT, L.L.C. | 353,988 | .42 | $930,988 | 30-Sep-09 | | Harris Financial Corp | 304,225 | .36 | $800,111 | 30-Sep-09 | | PUTNAM INVESTMENT MANAGEMENT, LLC | 280,952 | .33 | $738,903 | 30-Sep-09 | | DEUTSCHE BANK AKTIENGESELLSCHAFT | 187,080 | .22 | $492,020 | 30-Sep-09 |
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| Holder | Shares | % Out | Value* | Reported | | Powershares Exhg Traded Fd Tr-POWERSHARES WILDERHILL CLEAN E | 2,275,990 | 2.71 | $4,233,341 | 31-Jul-09 | | DFA INTERNATIONAL SMALL CAP VALUE PORTFOLIO | 1,519,530 | 1.81 | $3,115,036 | 30-Apr-09 | | Powershares Exgh Traded Fd Tr II-Pwrshs Global Clean Energy | 705,574 | .84 | $1,312,367 | 31-Jul-09 | | CALVERT IMPACT FUND, INC-CALVERT GLOBAL ALTERNATIVE ENERGY F | 504,294 | .60 | $907,729 | 30-Jun-09 | | DFA Investment Dimensions-Canadian Small Company Series | 376,152 | .45 | $699,642 | 31-Jul-09 | | DFA International Core Equity Portfolio | 162,070 | .19 | $332,243 | 30-Apr-09 | | COLLEGE RETIREMENT EQUITIES FUND-STOCK ACCOUNT | 84,033 | .10 | $151,259 | 30-Jun-09 | | First Trust Nasdaq (R) Clean Edge (R) Green Energy Index Fun | 73,808 | .09 | $132,854 | 30-Jun-09 | | Metropolitan Ser Fd-Met/Dimensional International Small Comp | 57,149 | .07 | $91,438 | 31-Mar-09 | | PUTNAM ASSET ALLOCATION FUNDS-GROWTH PORTFOLIO | 55,629 | .07 | $100,132 | 30-Jun-09 |
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Value shown is computed using the security's price on the report date given.
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