| Top Institutional Holders |
|---|
| Holder | Shares | % Out | Value* | Reported |
|---|
| Waddell & Reed Financial Inc. | 2,421,521 | 7.82 | 28,912,960 | Mar 31, 2013 | | Alydar Partners, LLC | 1,951,360 | 6.30 | 23,299,238 | Mar 31, 2013 | | Thornburg Investment Management Inc. | 1,617,425 | 5.23 | 19,312,054 | Mar 31, 2013 | | Turner Investments L.P. | 1,273,761 | 4.12 | 15,208,706 | Mar 31, 2013 | | Luther King Capital Management | 1,238,160 | 4.00 | 14,783,630 | Mar 31, 2013 | | Times Square Capital Management | 1,175,660 | 3.80 | 14,037,380 | Mar 31, 2013 | | Diker Management, LLC | 910,245 | 2.94 | 10,868,325 | Mar 31, 2013 | | Price (T.Rowe) Associates Inc | 857,700 | 2.77 | 10,240,938 | Mar 31, 2013 | | Wellington Management Company, LLP | 851,000 | 2.75 | 10,160,940 | Mar 31, 2013 | | Palisade Capital Management, L.L.C. | 825,020 | 2.67 | 9,850,738 | Mar 31, 2013 |
|
| Holder | Shares | % Out | Value* | Reported |
|---|
| Waddell & Reed Advisors Funds-Science & Technology Fund | 1,202,221 | 3.88 | 14,354,518 | Mar 31, 2013 | | Ivy Science & Technology Fund | 884,900 | 2.86 | 10,565,706 | Mar 31, 2013 | | Thornburg Investment Trust-Thornburg International Growth Fu | 724,641 | 2.34 | 12,913,102 | Dec 31, 2012 | | Thornburg Core Growth Fund | 608,225 | 1.97 | 10,838,569 | Dec 31, 2012 | | Principal Mid Cap Growth Fd III | 592,390 | 1.91 | 7,073,136 | Mar 31, 2013 | | LKCM Fund-LKCM Small Cap Equity Portfolio | 536,930 | 1.73 | 6,410,944 | Mar 31, 2013 | | Price (T.Rowe) Global Technology Fund | 501,900 | 1.62 | 5,992,686 | Mar 31, 2013 | | Blackrock Funds-U.S. Opportunities Portfolio | 326,800 | 1.06 | 5,823,576 | Dec 31, 2012 | | Turner Midcap Growth Fund | 276,740 | 0.89 | 4,931,506 | Dec 31, 2012 | | Fidelity Select Portfolios - Electronics | 226,400 | 0.73 | 2,703,216 | 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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