| TOP INSTITUTIONAL HOLDERS |
| Holder | Shares | % Out | Value* | Reported | | COLUMBIA WANGER ASSET MANAGEMENT, L.P. | 6,499,350 | 5.53 | $181,916,806 | 30-Sep-09 | | PRICE (T.ROWE) ASSOCIATES INC | 6,480,716 | 5.52 | $181,395,240 | 30-Sep-09 | | EARNEST PARTNERS LLC | 6,193,473 | 5.27 | $173,355,309 | 30-Sep-09 | | BAMCO INC. | 6,137,980 | 5.23 | $171,802,060 | 30-Sep-09 | | Barclays Global Investors UK Holdings Ltd | 5,254,571 | 4.47 | $147,075,442 | 30-Sep-09 | | SAROFIM, FAYEZ | 5,160,000 | 4.39 | $138,030,000 | 30-Jun-09 | | VANGUARD GROUP, INC. (THE) | 4,078,527 | 3.47 | $114,157,970 | 30-Sep-09 | | STATE STREET CORPORATION | 3,219,193 | 2.74 | $90,105,212 | 30-Sep-09 | | EATON VANCE MANAGEMENT | 2,400,985 | 2.04 | $67,203,570 | 30-Sep-09 | | MUNDER CAPITAL MANAGEMENT, INC. | 2,207,190 | 1.88 | $61,779,248 | 30-Sep-09 |
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| Holder | Shares | % Out | Value* | Reported | | COLUMBIA ACORN FD | 4,235,000 | 3.61 | $113,286,250 | 30-Jun-09 | | PRICE (T.ROWE) MID CAP GROWTH FUND | 4,000,000 | 3.41 | $111,960,000 | 30-Sep-09 | | BARON ASSET FUND | 2,089,799 | 1.78 | $55,902,123 | 30-Jun-09 | | BARON GROWTH FUND | 1,750,000 | 1.49 | $46,812,500 | 30-Jun-09 | | BARON PARTNERS FUND | 1,450,000 | 1.23 | $40,585,500 | 30-Sep-09 | | Munder Mid-Cap Core Growth Fund | 1,404,750 | 1.20 | $37,577,062 | 30-Jun-09 | | COLUMBIA ACORN SELECT FD | 1,300,000 | 1.11 | $34,775,000 | 30-Jun-09 | | VANGUARD MID-CAP INDEX FUND | 1,155,794 | .98 | $30,917,489 | 30-Jun-09 | | NEUBERGER & BERMAN GENESIS FUND | 1,070,300 | .91 | $29,957,697 | 30-Sep-09 | | MIDCAP SPDR TRUST SERIES I | 1,041,923 | .89 | $36,706,947 | 30-Sep-08 |
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Value shown is computed using the security's price on the report date given.
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