| Top Institutional Holders |
|---|
| Holder | Shares | % Out | Value* | Reported |
|---|
| Manning & Napier Advisors Inc | 8,855,959 | 8.16 | 183,141,232 | Mar 31, 2013 | | Wellington Management Company, LLP | 5,966,376 | 5.50 | 123,384,655 | Mar 31, 2013 | | Vanguard Group, Inc. (The) | 5,321,060 | 4.90 | 110,039,520 | Mar 31, 2013 | | State Street Corporation | 3,326,095 | 3.07 | 68,783,644 | Mar 31, 2013 | | FMR, LLC | 3,313,295 | 3.05 | 68,518,940 | Mar 31, 2013 | | BlackRock Institutional Trust Company, N.A. | 3,052,963 | 2.81 | 63,135,274 | Mar 31, 2013 | | BlackRock Fund Advisors | 2,576,767 | 2.37 | 53,287,541 | Mar 31, 2013 | | Macquarie Group Limited | 15,342,397 | 14.14 | 317,280,769 | Mar 31, 2013 | | UBS Global Asset Management (Americas) Inc | 2,073,168 | 1.91 | 42,873,114 | Mar 31, 2013 | | Barclays PLC | 1,903,189 | 1.75 | 39,357,948 | Mar 31, 2013 |
|
| Holder | Shares | % Out | Value* | Reported |
|---|
| Delaware Group Equity Funds IV-Delaware Mid Cap Growth Fund | 1,871,255 | 1.72 | 55,538,848 | Dec 31, 2012 | | Vanguard Total Stock Market Index Fund | 1,441,661 | 1.33 | 42,788,498 | Dec 31, 2012 | | Vanguard Explorer Fund, Inc. | 1,416,650 | 1.31 | 49,186,088 | Jan 31, 2013 | | Vanguard Mid-Cap Index Fund | 1,406,953 | 1.30 | 41,758,365 | Dec 31, 2012 | | Voyageur Mutual Funds III-Delaware Select Growth Fund | 1,377,004 | 1.27 | 47,809,578 | Jan 31, 2013 | | iShares Core S&P Midcap Index Fund | 1,220,226 | 1.12 | 25,234,273 | Mar 31, 2013 | | Oppenheimer Global Opportunities Fund | 1,000,000 | 0.92 | 29,680,000 | Dec 31, 2012 | | SPDR S&P Mid Cap 400 ETF Trust | 958,019 | 0.88 | 20,578,248 | Apr 30, 2013 | | Vanguard Extended Market Index Fund | 887,171 | 0.82 | 26,331,235 | Dec 31, 2012 | | Delaware VIP Smid Cap Growth Series | 817,750 | 0.75 | 24,270,820 | 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. |