| TOP INSTITUTIONAL HOLDERS |
| Holder | Shares | % Out | Value* | Reported | | Capital Research Global Investors | 2,000,000 | 4.88 | $25,740,000 | 30-Sep-09 | | Invesco Ltd. | 1,716,425 | 4.19 | $22,090,389 | 30-Sep-09 | | Barclays Global Investors UK Holdings Ltd | 1,656,256 | 4.04 | $21,316,014 | 30-Sep-09 | | VANGUARD GROUP, INC. (THE) | 1,288,120 | 3.14 | $16,578,104 | 30-Sep-09 | | RIVERBRIDGE PARTNERS LLC | 1,007,330 | 2.46 | $12,964,337 | 30-Sep-09 | | DIMENSIONAL FUND ADVISORS LP | 1,005,149 | 2.45 | $12,936,267 | 30-Sep-09 | | STATE STREET CORPORATION | 620,609 | 1.51 | $7,987,237 | 30-Sep-09 | | NORTHERN TRUST CORPORATION | 532,280 | 1.30 | $6,850,443 | 30-Sep-09 | | SiVest Group, Inc. | 494,100 | 1.21 | $6,359,067 | 30-Sep-09 | | FIRSTHAND CAPITAL MANAGEMENT, INC. | 494,100 | 1.21 | $4,189,968 | 30-Jun-09 |
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| Holder | Shares | % Out | Value* | Reported | | Powershares Exhg Traded Fd Tr-POWERSHARES WILDERHILL CLEAN E | 2,371,157 | 5.79 | $20,107,411 | 31-Jul-09 | | SMALLCAP WORLD FUND | 2,000,000 | 4.88 | $25,740,000 | 30-Sep-09 | | FIRSTHAND FUNDS-TECHNOLOGY VALUE FUND | 479,600 | 1.17 | $6,172,452 | 30-Sep-09 | | ISHARES RUSSELL 2000 INDEX FD | 417,937 | 1.02 | $4,622,383 | 30-Nov-09 | | DFA U.S. MICRO CAP SERIES | 371,953 | .91 | $3,154,161 | 31-Jul-09 | | VANGUARD SMALL-CAP INDEX FUND | 369,150 | .90 | $3,130,392 | 30-Jun-09 | | VANGUARD TOTAL STOCK MARKET INDEX FUND | 337,083 | .82 | $2,858,463 | 30-Jun-09 | | VANGUARD EXTENDED MARKET INDEX FUND | 190,330 | .46 | $1,613,998 | 30-Jun-09 | | ISHARES RUSSELL 2000 GROWTH INDEX FD | 167,075 | .41 | $1,847,849 | 30-Nov-09 | | VANGUARD SMALL-CAP GROWTH INDEX FUND | 164,061 | .40 | $2,111,465 | 30-Sep-09 |
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*
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Value shown is computed using the security's price on the report date given.
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