| Top Institutional Holders |
|---|
| Holder | Shares | % Out | Value* | Reported |
|---|
| Morgan Stanley | 1,336,828 | 6.64 | 66,360,141 | Mar 31, 2013 | | Cadian Capital Management, LLC | 1,265,401 | 6.28 | 62,814,505 | Mar 31, 2013 | | JANUS CAPITAL MANAGEMENT, LLC | 1,187,740 | 5.90 | 58,959,413 | Mar 31, 2013 | | Tremblant Capital Group | 1,185,366 | 5.88 | 58,841,568 | Mar 31, 2013 | | Rainier Investment Management | 900,880 | 4.47 | 44,719,683 | Mar 31, 2013 | | Lord Abbett & Co | 776,572 | 3.86 | 38,549,034 | Mar 31, 2013 | | Boston Trust & Investment Management Co. | 768,551 | 3.82 | 38,150,871 | Mar 31, 2013 | | Columbia Partners, L.L.C, Investment Management | 736,847 | 3.66 | 33,077,061 | Dec 31, 2012 | | Alydar Partners, LLC | 581,429 | 2.89 | 28,862,135 | Mar 31, 2013 | | FMR, LLC | 2,618,498 | 13.00 | 129,982,240 | Mar 31, 2013 |
|
| Holder | Shares | % Out | Value* | Reported |
|---|
| Fidelity Growth Company Fund | 1,990,322 | 9.88 | 98,799,584 | Mar 31, 2013 | | Janus Venture Fund | 648,351 | 3.22 | 32,184,143 | Mar 31, 2013 | | Rainier Small/Midcap Equity Portfolio | 506,140 | 2.51 | 22,720,624 | Dec 31, 2012 | | Lord Abbett Developing Growth Fund | 493,876 | 2.45 | 23,750,496 | Jan 31, 2013 | | Janus Contrarian Fund | 448,366 | 2.23 | 22,256,888 | Mar 31, 2013 | | Smallcap World Fund | 450,000 | 2.23 | 22,338,000 | Mar 31, 2013 | | Fidelity Blue Chip Growth Fund | 286,400 | 1.42 | 14,216,896 | Mar 31, 2013 | | Fidelity OTC Portfolio | 228,258 | 1.13 | 11,330,727 | Mar 31, 2013 | | Master Value Opportunities LLC | 137,300 | 0.68 | 6,163,397 | Dec 31, 2012 | | Wells Fargo Advantage Emerging Growth Fd | 133,900 | 0.66 | 6,646,796 | Mar 31, 2013 |
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Value shown is computed using the security's price on the report date given. Currency in USD. |