| TOP INSTITUTIONAL HOLDERS |
| Holder | Shares | % Out | Value* | Reported | | MASSACHUSETTS FINANCIAL SERVICES CO - OTHER | 854,127 | 7.17 | $61,104,245 | 30-Sep-09 | | ARTISAN PARTNERS LIMITED PARTNERSHIP | 853,000 | 7.16 | $61,023,620 | 30-Sep-09 | | Barclays Global Investors UK Holdings Ltd | 475,776 | 3.99 | $34,037,015 | 30-Sep-09 | | STERLING CAPITAL MANAGEMENT COMPANY | 427,223 | 3.59 | $30,563,533 | 30-Sep-09 | | RENAISSANCE TECHNOLOGIES, LLC | 374,100 | 3.14 | $26,763,114 | 30-Sep-09 | | VANGUARD GROUP, INC. (THE) | 351,105 | 2.95 | $25,118,051 | 30-Sep-09 | | U.S. BANCORP (MINNESOTA) | 267,100 | 2.24 | $19,108,334 | 30-Sep-09 | | Whale Rock Capital Management LLC | 265,395 | 2.23 | $18,986,358 | 30-Sep-09 | | STATE STREET CORPORATION | 226,565 | 1.90 | $16,208,460 | 30-Sep-09 | | LUTHER KING CAPITAL MANAGEMENT | 222,200 | 1.86 | $15,896,188 | 30-Sep-09 |
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| Holder | Shares | % Out | Value* | Reported | | ARTISAN SMALL CAP VALUE FUND | 483,400 | 4.06 | $24,276,348 | 30-Jun-09 | | MFS RESEARCH FUND | 219,320 | 1.84 | $11,014,250 | 30-Jun-09 | | MFS CORE EQUITY FUND | 176,960 | 1.49 | $10,927,280 | 31-Aug-09 | | MFS MID CAP GROWTH FUND | 172,290 | 1.45 | $10,638,907 | 31-Aug-09 | | MFS SERIES TRUST XI-MFS MID CAP VALUE FUND | 156,583 | 1.31 | $7,863,598 | 30-Jun-09 | | ISHARES RUSSELL 2000 INDEX FD | 133,059 | 1.12 | $9,519,040 | 30-Sep-09 | | VANGUARD SMALL-CAP INDEX FUND | 111,421 | .94 | $5,595,562 | 30-Jun-09 | | FIRST AMERICAN MID CAP GROWTH OPPORTUNITIES FUND | 92,840 | .78 | $6,641,773 | 30-Sep-09 | | MFS TECHNOLOGY FUND | 92,040 | .77 | $5,683,470 | 31-Aug-09 | | LKCM FUND-LKCM SMALL CAP EQUITY PORTFOLIO | 87,850 | .74 | $6,284,789 | 30-Sep-09 |
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Value shown is computed using the security's price on the report date given.
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