| Top Institutional Holders |
|---|
| Holder | Shares | % Out | Value* | Reported |
|---|
| Vanguard Group, Inc. (The) | 2,604,369 | 4.94 | 399,952,947 | Mar 31, 2013 | | Blair (William) & Company, L.L.C. | 2,153,508 | 4.08 | 330,714,223 | Mar 31, 2013 | | AllianceBernstein, L.P. | 1,881,404 | 3.57 | 288,927,212 | Mar 31, 2013 | | State Street Corporation | 1,793,801 | 3.40 | 275,474,019 | Mar 31, 2013 | | Wells Fargo & Company | 1,716,847 | 3.26 | 263,656,193 | Mar 31, 2013 | | Atlanta Capital Management Company LLC | 1,621,801 | 3.08 | 249,059,979 | Mar 31, 2013 | | Citadel Advisors LLC | 1,576,169 | 2.99 | 242,052,273 | Mar 31, 2013 | | Lateef Investment Management | 1,528,942 | 2.90 | 234,799,622 | Mar 31, 2013 | | BlackRock Institutional Trust Company, N.A. | 1,465,838 | 2.78 | 225,108,741 | Mar 31, 2013 | | Macquarie Group Limited | 1,300,903 | 2.47 | 199,779,673 | Mar 31, 2013 |
|
| Holder | Shares | % Out | Value* | Reported |
|---|
| Eaton Vance-Atlanta Capital SMID-Cap Port | 995,815 | 1.89 | 152,927,309 | Mar 31, 2013 | | Munder Mid-Cap Core Growth Fund | 809,700 | 1.54 | 124,345,629 | Mar 31, 2013 | | Vanguard Mid-Cap Index Fund | 763,208 | 1.45 | 117,205,852 | Mar 31, 2013 | | Vanguard Total Stock Market Index Fund | 720,437 | 1.37 | 110,637,510 | Mar 31, 2013 | | College Retirement Equities Fund-Stock Account | 659,592 | 1.25 | 101,293,543 | Mar 31, 2013 | | Nicholas Fund Inc | 623,520 | 1.18 | 95,753,966 | Mar 31, 2013 | | iShares Core S&P Midcap Index Fund | 616,126 | 1.17 | 95,918,495 | Apr 30, 2013 | | Delaware Group Equity Fds IV-Delaware Smid Cap Growth Fund | 501,700 | 0.95 | 77,046,069 | Mar 31, 2013 | | Delaware Group Equity Funds IV-Delaware Mid Cap Growth Fund | 501,700 | 0.95 | 65,296,255 | Dec 31, 2012 | | Royce Premier Fund | 475,000 | 0.90 | 72,945,750 | 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. |