| Top Institutional Holders |
|---|
| Holder | Shares | % Out | Value* | Reported |
|---|
| Wellington Management Company, LLP | 5,237,260 | 9.35 | 174,976,856 | Mar 31, 2013 | | Royce & Associates, LLC | 3,514,640 | 6.28 | 117,424,122 | Mar 31, 2013 | | Vanguard Group, Inc. (The) | 3,503,943 | 6.26 | 117,066,735 | Mar 31, 2013 | | BlackRock Fund Advisors | 3,122,736 | 5.58 | 104,330,609 | Mar 31, 2013 | | S.A.C. Capital Advisors, LLC | 2,335,798 | 4.17 | 78,039,011 | Mar 31, 2013 | | BlackRock Institutional Trust Company, N.A. | 1,775,760 | 3.17 | 59,328,141 | Mar 31, 2013 | | Lord Abbett & Co | 1,610,396 | 2.88 | 53,803,330 | Mar 31, 2013 | | PointState Capital LP | 1,600,000 | 2.86 | 53,456,000 | Mar 31, 2013 | | State Street Corporation | 1,587,028 | 2.83 | 53,022,605 | Mar 31, 2013 | | Price (T.Rowe) Associates Inc | 5,735,595 | 10.24 | 191,626,228 | Mar 31, 2013 |
|
| Holder | Shares | % Out | Value* | Reported |
|---|
| Price (T.Rowe) Health Sciences Fund | 2,562,000 | 4.58 | 85,596,420 | Mar 31, 2013 | | Royce Low-Priced Stock Fund | 1,400,140 | 2.50 | 46,778,677 | Mar 31, 2013 | | Lord Abbett Research Fund, Small-Cap Value Series | 1,025,196 | 1.83 | 32,611,484 | Feb 28, 2013 | | iShares Core S&P Smallcap ETF | 918,717 | 1.64 | 30,694,334 | Mar 31, 2013 | | Vanguard Small-Cap Index Fund | 888,115 | 1.59 | 21,288,116 | Dec 31, 2012 | | Price (T.Rowe) Small Cap Stock Fund | 892,700 | 1.59 | 29,825,107 | Mar 31, 2013 | | iShares Russell 2000 Index Fund | 882,762 | 1.58 | 29,493,078 | Mar 31, 2013 | | Price (T.Rowe) New Horizons Fund | 812,600 | 1.45 | 27,148,966 | Mar 31, 2013 | | Vanguard Total Stock Market Index Fund | 726,547 | 1.30 | 17,415,331 | Dec 31, 2012 | | Hussman Investment Trust-Hussman Strategic Growth Fund | 696,000 | 1.24 | 16,683,120 | Dec 31, 2012 |
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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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