| Top Institutional Holders |
|---|
| Holder | Shares | % Out | Value* | Reported |
|---|
| Artisan Partners Limited Partnership | 4,538,250 | 8.82 | 301,385,182 | 2013-03-31 | | Columbia Wanger Asset Management, L.P. | 3,899,550 | 7.58 | 258,969,115 | 2013-03-31 | | Price (T.Rowe) Associates Inc | 3,274,230 | 6.36 | 217,441,614 | 2013-03-31 | | Vanguard Group, Inc. (The) | 1,750,991 | 3.40 | 116,283,312 | 2013-03-31 | | Wells Fargo & Company | 1,694,942 | 3.29 | 112,561,098 | 2013-03-31 | | Royce & Associates, LLC | 1,368,582 | 2.66 | 90,887,530 | 2013-03-31 | | Eagle Asset Management, Inc. | 1,159,754 | 2.25 | 77,019,263 | 2013-03-31 | | Wasatch Advisors Inc | 1,015,404 | 1.97 | 67,432,979 | 2013-03-31 | | BlackRock Institutional Trust Company, N.A. | 769,901 | 1.50 | 51,129,125 | 2013-03-31 | | Wellington Management Company, LLP | 727,688 | 1.41 | 48,325,760 | 2013-03-31 |
|
| Holder | Shares | % Out | Value* | Reported |
|---|
| Columbia Acorn Fund | 2,620,000 | 5.09 | 173,994,200 | 2013-03-31 | | Artisan Mid-Cap Fund | 2,234,100 | 4.34 | 148,366,581 | 2013-03-31 | | Price (T.Rowe) Mid Cap Growth Fund | 950,000 | 1.85 | 63,089,500 | 2013-03-31 | | Pennsylvania Mutual Fund Inc | 646,630 | 1.26 | 42,942,698 | 2013-03-31 | | Price (T.Rowe) Science & Technology Fund | 582,500 | 1.13 | 38,683,825 | 2013-03-31 | | Eagle Series Tr-Eagle Small Cap Growth Fund | 527,997 | 1.03 | 35,064,280 | 2013-03-31 | | Columbia Acorn USA Fund | 504,000 | 0.98 | 33,470,640 | 2013-03-31 | | Vanguard Small-Cap Index Fund | 498,418 | 0.97 | 33,099,939 | 2013-03-31 | | Vanguard Total Stock Market Index Fund | 462,948 | 0.90 | 30,744,376 | 2013-03-31 | | Lord Abbett Developing Growth Fund | 449,040 | 0.87 | 29,403,139 | 2013-01-31 |
|
View Transactions for Insiders & Institutional Holders Value shown is computed using the security's price on the report date given. Currency in USD. |
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