| Top Institutional Holders |
|---|
| Holder | Shares | % Out | Value* | Reported |
|---|
| Wasatch Advisors Inc | 2,949,410 | 8.72 | 40,554,387 | Mar 31, 2013 | | Sun Life Financial Inc. | 2,129,116 | 6.30 | 29,275,345 | Mar 31, 2013 | | Vanguard Group, Inc. (The) | 1,886,982 | 5.58 | 25,946,002 | Mar 31, 2013 | | Prescott Group Capital Management, L.L.C. | 1,883,200 | 5.57 | 25,894,000 | Mar 31, 2013 | | AllianceBernstein, L.P. | 1,704,689 | 5.04 | 23,439,473 | Mar 31, 2013 | | Alger (Fred) Management Inc | 1,307,556 | 3.87 | 17,978,895 | Mar 31, 2013 | | BlackRock Institutional Trust Company, N.A. | 1,083,563 | 3.20 | 14,898,991 | Mar 31, 2013 | | BlackRock Fund Advisors | 814,987 | 2.41 | 11,206,071 | Mar 31, 2013 | | FMR, LLC | 5,036,362 | 14.89 | 69,249,977 | Mar 31, 2013 | | State Street Corporation | 565,430 | 1.67 | 7,774,662 | Mar 31, 2013 |
|
| Holder | Shares | % Out | Value* | Reported |
|---|
| Fidelity Growth Company Fund | 3,282,775 | 9.71 | 45,138,156 | Mar 31, 2013 | | Wasatch-1st Source Long/Short Fund | 2,802,981 | 8.29 | 28,674,495 | Dec 31, 2012 | | Alliance Bernstein Global Thematic Growth Fund | 1,196,292 | 3.54 | 17,394,085 | Jan 31, 2013 | | Fidelity OTC Portfolio | 1,177,474 | 3.48 | 16,190,267 | Mar 31, 2013 | | Vanguard Small-Cap Index Fund | 531,525 | 1.57 | 5,437,500 | Dec 31, 2012 | | iShares Russell 2000 Index Fund | 514,552 | 1.52 | 7,075,090 | Mar 31, 2013 | | Alger Small Cap Growth Institutional Portfolio | 505,850 | 1.50 | 7,355,059 | Jan 31, 2013 | | AXA Premier Multimanager VIP Aggressive Equity Portfolio | 425,623 | 1.26 | 4,354,123 | Dec 31, 2012 | | Vanguard Total Stock Market Index Fund | 419,025 | 1.24 | 4,286,625 | Dec 31, 2012 | | Fidelity Select Portfolios - Computers | 393,800 | 1.16 | 5,414,750 | Mar 31, 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. |
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