| Top Institutional Holders |
|---|
| Holder | Shares | % Out | Value* | Reported |
|---|
| Deerfield Management | 4,884,368 | 8.03 | 12,162,076 | Mar 31, 2013 | | Maverick Capital Ltd. | 3,531,953 | 5.81 | 8,794,562 | Mar 31, 2013 | | Blackstone Group L.P. | 2,411,556 | 3.96 | 6,004,774 | Mar 31, 2013 | | Oracle Investment Management, Inc. | 1,865,000 | 3.07 | 4,643,850 | Mar 31, 2013 | | BlackRock Fund Advisors | 1,433,600 | 2.36 | 3,569,664 | Mar 31, 2013 | | Raging Capital Management, LLC | 1,323,851 | 2.18 | 3,296,388 | Mar 31, 2013 | | Visium Asset Management | 1,000,000 | 1.64 | 2,490,000 | Mar 31, 2013 | | BlackRock Advisors, LLC | 704,482 | 1.16 | 1,754,160 | Mar 31, 2013 | | Fuller & Thaler Asset Management Inc. | 645,600 | 1.06 | 1,607,544 | Mar 31, 2013 | | Vanguard Group, Inc. (The) | 611,556 | 1.01 | 1,522,774 | Mar 31, 2013 |
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| Holder | Shares | % Out | Value* | Reported |
|---|
| iShares Russell 2000 Index Fund | 580,660 | 0.95 | 1,486,489 | Apr 30, 2013 | | Master Value Opportunities LLC | 536,300 | 0.88 | 1,335,387 | Mar 31, 2013 | | Vanguard Total Stock Market Index Fund | 525,087 | 0.86 | 1,307,466 | Mar 31, 2013 | | iShares NASDAQ Biotechnology Index Fund | 522,240 | 0.86 | 1,336,934 | Apr 30, 2013 | | iShares Russell 2000 Value Index Fund | 285,773 | 0.47 | 731,578 | Apr 30, 2013 | | Bridgeway Funds Inc-Ultra Small Company Fund | 280,000 | 0.46 | 697,200 | Mar 31, 2013 | | College Retirement Equities Fund-Stock Account | 243,627 | 0.40 | 606,631 | Mar 31, 2013 | | Bridgeway Funds Inc-Ultra Small Company Market Fund | 222,400 | 0.37 | 553,776 | Mar 31, 2013 | | Blackrock Var Ser Fd-Blackrock Value Opportunities V.I. Fd | 143,300 | 0.24 | 356,817 | Mar 31, 2013 | | Spartan Extended Market Index Fund | 117,048 | 0.19 | 299,642 | Apr 30, 2013 |
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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. |
0.49%