| Top Institutional Holders |
|---|
| Holder | Shares | % Out | Value* | Reported |
|---|
| Vanguard Group, Inc. (The) | 2,649,499 | 7.07 | 3,656,308 | 31-Mar-2013 | | BlackRock Fund Advisors | 1,950,418 | 5.20 | 2,691,576 | 31-Mar-2013 | | FMR, LLC | 1,716,785 | 4.58 | 2,369,163 | 31-Mar-2013 | | BlackRock Institutional Trust Company, N.A. | 1,328,846 | 3.54 | 1,833,807 | 31-Mar-2013 | | Gilder, Gagnon, Howe & Co. | 1,158,470 | 3.09 | 1,598,688 | 31-Mar-2013 | | AQR Capital Management, LLC | 1,087,309 | 2.90 | 1,500,486 | 31-Mar-2013 | | Renaissance Technologies, LLC | 1,027,867 | 2.74 | 1,418,456 | 31-Mar-2013 | | Susquehanna International Group, LLP | 769,922 | 2.05 | 1,062,492 | 31-Mar-2013 | | Firefly Value Partners, LP | 733,700 | 1.96 | 1,012,506 | 31-Mar-2013 | | TFS Capital LLC | 719,087 | 1.92 | 992,340 | 31-Mar-2013 |
|
| Holder | Shares | % Out | Value* | Reported |
|---|
| Oppenheimer Global Opportunities Fund | 2,300,000 | 6.14 | 43,677,000 | 31-Dec-2012 | | Fidelity Select Portfolios - Biotechnology | 1,164,556 | 3.11 | 1,607,087 | 31-Mar-2013 | | iShares Dow Jones U.S. Pharmaceuticals Index Fund | 642,193 | 1.71 | 886,226 | 31-Mar-2013 | | iShares Russell 2000 Index Fund | 578,896 | 1.54 | 798,876 | 31-Mar-2013 | | Vanguard Small-Cap Index Fund | 570,979 | 1.52 | 10,842,891 | 31-Dec-2012 | | Vanguard Total Stock Market Index Fund | 451,731 | 1.20 | 8,578,371 | 31-Dec-2012 | | Vanguard Small-Cap Growth Index Fund | 401,801 | 1.07 | 7,630,200 | 31-Dec-2012 | | iShares NASDAQ Biotechnology Index Fund | 377,786 | 1.01 | 521,344 | 31-Mar-2013 | | Vanguard Extended Market Index Fund | 305,517 | 0.81 | 5,801,767 | 31-Dec-2012 | | Putnam Multi Cap Growth Fund | 274,356 | 0.73 | 5,210,020 | 31-Dec-2012 |
|
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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