| Top Institutional Holders |
|---|
| Holder | Shares | % Out | Value* | Reported |
|---|
| Perkins Investment Management, LLC | 5,963,634 | 6.56 | 69,178,154 | Mar 31, 2013 | | Vanguard Group, Inc. (The) | 5,104,490 | 5.62 | 59,212,084 | Mar 31, 2013 | | Artisan Partners Limited Partnership | 4,567,700 | 5.02 | 52,985,320 | Mar 31, 2013 | | Wellington Management Company, LLP | 4,014,701 | 4.42 | 39,063,040 | Dec 31, 2012 | | BlackRock Fund Advisors | 3,692,902 | 4.06 | 42,837,663 | Mar 31, 2013 | | State Street Corporation | 3,308,829 | 3.64 | 38,382,416 | Mar 31, 2013 | | BlackRock Institutional Trust Company, N.A. | 3,088,465 | 3.40 | 35,826,194 | Mar 31, 2013 | | Citadel Advisors LLC | 2,867,082 | 3.15 | 27,896,707 | Dec 31, 2012 | | Paradigm Capital Management | 2,257,153 | 2.48 | 26,182,974 | Mar 31, 2013 | | Northern Trust Corporation | 1,820,627 | 2.00 | 21,119,273 | Mar 31, 2013 |
|
| Holder | Shares | % Out | Value* | Reported |
|---|
| Janus Perkins Mid Cap Value Fund | 3,700,002 | 4.07 | 42,920,023 | Mar 31, 2013 | | Artisan Small Cap Value Fund | 3,055,300 | 3.36 | 29,728,069 | Dec 31, 2012 | | Janus Perkins Small Cap Value Fund | 1,800,000 | 1.98 | 20,880,000 | Mar 31, 2013 | | Vanguard Small-Cap Index Fund | 1,565,152 | 1.72 | 15,228,928 | Dec 31, 2012 | | iShares Russell 2000 Index Fund | 1,455,572 | 1.60 | 16,884,635 | Mar 31, 2013 | | Vanguard Total Stock Market Index Fund | 1,276,896 | 1.40 | 12,424,198 | Dec 31, 2012 | | Vanguard Small-Cap Growth Index Fund | 1,100,844 | 1.21 | 10,711,212 | Dec 31, 2012 | | Fidelity Select Portfolios - Computers | 1,039,600 | 1.14 | 12,059,360 | Mar 31, 2013 | | iShares Core S&P Midcap Index Fund | 1,026,307 | 1.13 | 11,905,161 | Mar 31, 2013 | | Vanguard Morgan Growth Fund | 933,207 | 1.03 | 9,080,104 | Dec 31, 2012 |
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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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