| TOP INSTITUTIONAL HOLDERS |
| Holder | Shares | % Out | Value* | Reported | | CHARTWELL INVESTMENT PARTNERS | 1,050,534 | 2.30 | $15,905,084 | 30-Sep-09 | | Capital World Investors | 950,000 | 2.08 | $14,383,000 | 30-Sep-09 | | LORD ABBETT & CO | 847,931 | 1.85 | $12,837,675 | 30-Sep-09 | | MASSACHUSETTS FINANCIAL SERVICES CO - OTHER | 699,240 | 1.53 | $10,586,493 | 30-Sep-09 | | BLAIR (WILLIAM) & COMPANY, L.L.C. | 612,138 | 1.34 | $9,267,769 | 30-Sep-09 | | APG All Pensions Group | 549,800 | 1.20 | $8,323,972 | 30-Sep-09 | | LAZARD ASSET MANAGEMENT LLC | 360,740 | .79 | $5,461,603 | 30-Sep-09 | | U.S. BANCORP (MINNESOTA) | 324,084 | .71 | $4,906,631 | 30-Sep-09 | | WELLS FARGO & COMPANY | 317,283 | .69 | $4,803,664 | 30-Sep-09 | | ADAGE CAPITAL PARTNERS GP, L.L.C. | 306,393 | .67 | $4,638,790 | 30-Sep-09 |
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| Holder | Shares | % Out | Value* | Reported | | SMALLCAP WORLD FUND | 850,000 | 1.86 | $11,050,000 | 30-Jun-09 | | BLAIR (WILLIAM) MUTUAL FUNDS, INC.-SMALL CAP GROWTH FUND | 520,879 | 1.14 | $7,886,108 | 30-Sep-09 | | VANGUARD EXPLORER FUND, INC. | 393,769 | .86 | $5,347,383 | 31-Jul-09 | | JOHN HANCOCK SMALL CAP EQUITY FUND | 223,692 | .49 | $2,957,208 | 31-Oct-09 | | MFS NEW DISCOVERY FUND | 211,340 | .46 | $3,041,182 | 31-Aug-09 | | ING INV TR-ING/EVERGREEN HEALTH SCIENCES PORTFOLIO | 179,071 | .39 | $2,327,923 | 30-Jun-09 | | Columbia Fds Ser Tr I-Columbia Small Cap Growth Fd II | 153,481 | .34 | $2,208,591 | 31-Aug-09 | | MARSHALL SMALL-CAP GROWTH FUND | 141,400 | .31 | $1,869,308 | 31-Oct-09 | | EVERGREEN HEALTH CARE FUND | 138,844 | .30 | $1,885,501 | 31-Jul-09 | | FIRST AMERICAN SMALL CAP GROWTH OPPORTUNITIES FUND | 119,446 | .26 | $1,808,412 | 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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