| TOP INSTITUTIONAL HOLDERS |
| Holder | Shares | % Out | Value* | Reported | | Barclays Global Investors UK Holdings Ltd | 3,643,640 | 4.31 | $57,897,439 | 30-Sep-09 | | VANGUARD GROUP, INC. (THE) | 2,972,893 | 3.52 | $47,239,269 | 30-Sep-09 | | WESTFIELD CAPITAL MANAGEMENT COMPANY | 2,628,389 | 3.11 | $41,765,101 | 30-Sep-09 | | GRANAHAN INVESTMENT MANAGEMENT INC. | 2,214,660 | 2.62 | $35,190,947 | 30-Sep-09 | | ALGER (FRED) MANAGEMENT INC | 2,046,049 | 2.42 | $32,511,718 | 30-Sep-09 | | FMR LLC | 10,162,544 | 12.03 | $161,482,824 | 30-Sep-09 | | Capital Research Global Investors | 9,276,500 | 10.98 | $147,403,585 | 30-Sep-09 | | WELLS FARGO & COMPANY | 1,562,122 | 1.85 | $24,822,118 | 30-Sep-09 | | STATE STREET CORPORATION | 1,406,255 | 1.66 | $22,345,391 | 30-Sep-09 | | Tygh Capital Management, Inc. | 1,350,043 | 1.60 | $21,452,183 | 30-Sep-09 |
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| Holder | Shares | % Out | Value* | Reported | | FIDELITY GROWTH COMPANY FUND | 7,910,500 | 9.36 | $105,209,650 | 31-Oct-09 | | AMCAP FUND | 4,000,000 | 4.73 | $63,560,000 | 30-Sep-09 | | SMALLCAP WORLD FUND | 3,636,500 | 4.30 | $57,783,985 | 30-Sep-09 | | VANGUARD EXPLORER FUND, INC. | 2,184,800 | 2.59 | $19,685,048 | 31-Jul-09 | | ISHARES RUSSELL 2000 INDEX FD | 964,542 | 1.14 | $12,828,408 | 31-Oct-09 | | VANGUARD SMALL-CAP INDEX FUND | 926,609 | 1.10 | $6,958,833 | 30-Jun-09 | | NEW ECONOMY FUND (THE) | 865,000 | 1.02 | $13,744,850 | 30-Sep-09 | | AMERICAN FDS INSURANCE SER-GLOBAL SMALL CAPITALIZATION F | 775,000 | .92 | $12,314,750 | 30-Sep-09 | | Northwestern Mutual Ser Fd-Mid Cap Growth Stock Port | 590,800 | .70 | $4,436,908 | 30-Jun-09 | | VANGUARD TOTAL STOCK MARKET INDEX FUND | 587,995 | .70 | $4,415,842 | 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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