| TOP INSTITUTIONAL HOLDERS |
| Holder | Shares | % Out | Value* | Reported | | Capital Research Global Investors | 1,682,157 | 7.97 | $36,200,018 | 30-Sep-09 | | Barclays Global Investors UK Holdings Ltd | 1,642,229 | 7.78 | $35,340,768 | 30-Sep-09 | | WELLINGTON MANAGEMENT COMPANY, LLP | 1,258,010 | 5.96 | $27,072,375 | 30-Sep-09 | | BlackRock Advisors, LLC | 1,136,142 | 5.38 | $24,449,775 | 30-Sep-09 | | VANGUARD GROUP, INC. (THE) | 878,609 | 4.16 | $18,907,665 | 30-Sep-09 | | VAUGHAN, NELSON, SCARBOROUGH & MCCULLOUGH LP | 858,850 | 4.07 | $18,482,452 | 30-Sep-09 | | MANNING & NAPIER ADVISORS INC | 764,840 | 3.63 | $16,459,356 | 30-Sep-09 | | U.S. BANCORP (MINNESOTA) | 722,922 | 3.43 | $15,557,281 | 30-Sep-09 | | Invesco Ltd. | 674,647 | 3.20 | $14,518,403 | 30-Sep-09 | | COLUMBIA PARTNERS, L.L.C, INVESTMENT MANAGEMENT | 636,181 | 3.02 | $13,690,615 | 30-Sep-09 |
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| Holder | Shares | % Out | Value* | Reported | | SMALLCAP WORLD FUND | 1,121,183 | 5.31 | $21,683,679 | 30-Jun-09 | | BLACKROCK FUNDS-SMALL CAP GROWTH EQUITY PORTFOLIO | 647,177 | 3.07 | $12,516,403 | 30-Jun-09 | | AMERICAN FDS INSURANCE SER-GLOBAL SMALL CAPITALIZATION F | 400,974 | 1.90 | $8,628,960 | 30-Sep-09 | | AIM SMALL CAP GROWTH FUND | 323,808 | 1.53 | $6,968,348 | 30-Sep-09 | | ISHARES RUSSELL 2000 INDEX FD | 309,929 | 1.47 | $6,669,672 | 30-Sep-09 | | FIRST AMERICAN SMALL CAP SELECT FUND | 303,991 | 1.44 | $6,541,886 | 30-Sep-09 | | ISHARES S&P SMALLCAP 600 INDEX FD | 274,385 | 1.30 | $5,328,556 | 31-Oct-09 | | VANGUARD SMALL-CAP INDEX FUND | 256,994 | 1.22 | $4,970,263 | 30-Jun-09 | | HARTFORD SMALL COMPANY HLS FUND, INC. | 250,000 | 1.18 | $4,835,000 | 30-Jun-09 | | Manning & Napier Maryland Life Sciences Series Fund | 243,100 | 1.15 | $4,701,554 | 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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