| TOP INSTITUTIONAL HOLDERS |
| Holder | Shares | % Out | Value* | Reported | | DnB Nor Asset Management (US), Inc. | 1,053,581 | 6.19 | $6,384,700 | 30-Sep-09 | | Barclays Global Investors UK Holdings Ltd | 555,648 | 3.27 | $3,367,226 | 30-Sep-09 | | Kimelman & Baird, LLC | 454,599 | 2.67 | $2,754,869 | 30-Sep-09 | | WALL STREET ASSOCIATES | 394,600 | 2.32 | $2,391,276 | 30-Sep-09 | | PRESCOTT GROUP CAPITAL MANAGEMENT, L.L.C. | 354,100 | 2.08 | $2,145,846 | 30-Sep-09 | | DIMENSIONAL FUND ADVISORS LP | 340,502 | 2.00 | $2,063,442 | 30-Sep-09 | | WADDELL & REED FINANCIAL INC. | 1,843,361 | 10.83 | $11,170,767 | 30-Sep-09 | | NORTHERN TRUST CORPORATION | 334,658 | 1.97 | $2,028,027 | 30-Sep-09 | | RICE, HALL, JAMES & ASSOCIATES | 292,896 | 1.72 | $1,774,949 | 30-Sep-09 | | VANGUARD GROUP, INC. (THE) | 284,197 | 1.67 | $1,722,233 | 30-Sep-09 |
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| Holder | Shares | % Out | Value* | Reported | | WADDELL & REED ADVISORS FDS-SCIENCE & TECHNOLOGY FUND | 1,284,400 | 7.55 | $7,783,464 | 30-Sep-09 | | Powershares Exhg Traded Fd Tr-POWERSHARES WILDERHILL CLEAN E | 542,258 | 3.19 | $3,481,296 | 31-Jul-09 | | IVY SCIENCE & TECHNOLOGY FUND | 380,900 | 2.24 | $2,308,254 | 30-Sep-09 | | IVY REAL ESTATE SECURITIES FUND | 380,900 | 2.24 | $2,308,254 | 30-Sep-09 | | Ivy Fds VIP-Science & Technology Port | 177,000 | 1.04 | $1,072,620 | 30-Sep-09 | | VANGUARD TOTAL STOCK MARKET INDEX FUND | 176,784 | 1.04 | $1,267,541 | 30-Jun-09 | | ISHARES RUSSELL 2000 INDEX FD | 155,398 | .91 | $571,864 | 30-Nov-09 | | COLLEGE RETIREMENT EQUITIES FUND-STOCK ACCOUNT | 89,954 | .53 | $644,970 | 30-Jun-09 | | NORTHERN SMALL CAP VALUE FUND | 83,534 | .49 | $506,216 | 30-Sep-09 | | ISHARES RUSSELL 2000 GROWTH INDEX FD | 82,345 | .48 | $303,029 | 30-Nov-09 |
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Value shown is computed using the security's price on the report date given.
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