| Top Institutional Holders |
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| Holder | Shares | % Out | Value* | Reported |
|---|
| Vanguard Group, Inc. (The) | 15,462,393 | 5.50 | 82,259,930 | Mar 31, 2013 | | BlackRock Fund Advisors | 11,434,033 | 4.07 | 60,829,055 | Mar 31, 2013 | | State Street Corporation | 10,295,685 | 3.66 | 54,773,044 | Mar 31, 2013 | | Wellington Management Company, LLP | 8,676,476 | 3.08 | 46,158,852 | Mar 31, 2013 | | BlackRock Institutional Trust Company, N.A. | 8,403,965 | 2.99 | 44,709,093 | Mar 31, 2013 | | FMR, LLC | 7,414,000 | 2.64 | 39,442,480 | Mar 31, 2013 | | Turner Investments L.P. | 7,139,611 | 2.54 | 37,982,730 | Mar 31, 2013 | | Penn Capital Management Co., Inc. | 7,108,559 | 2.53 | 37,817,533 | Mar 31, 2013 | | Northern Trust Corporation | 6,885,491 | 2.45 | 36,630,812 | Mar 31, 2013 | | Guggenheim Capital, LLC | 6,738,166 | 2.40 | 35,847,043 | Mar 31, 2013 |
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| Holder | Shares | % Out | Value* | Reported |
|---|
| iShares Russell 2000 Index Fund | 4,396,107 | 1.56 | 24,662,160 | Apr 30, 2013 | | Vanguard Small-Cap Index Fund | 3,963,280 | 1.41 | 21,084,649 | Mar 31, 2013 | | Vanguard Total Stock Market Index Fund | 3,868,828 | 1.38 | 20,582,164 | Mar 31, 2013 | | Vanguard Small-Cap Growth Index Fund | 3,328,301 | 1.18 | 17,706,561 | Mar 31, 2013 | | iShares Core S&P Midcap Index Fund | 3,290,477 | 1.17 | 18,459,575 | Apr 30, 2013 | | Fidelity Small Cap Opportunities Fund | 3,165,450 | 1.13 | 15,827,250 | Jan 31, 2013 | | College Retirement Equities Fund-Stock Account | 3,096,971 | 1.10 | 16,475,885 | Mar 31, 2013 | | Heartland Select Value Fund | 2,896,638 | 1.03 | 15,410,114 | Mar 31, 2013 | | SPDR S&P Mid Cap 400 ETF Trust | 2,480,854 | 0.88 | 13,917,590 | Apr 30, 2013 | | Security Equity Fund-Mid Cap Value Series | 2,464,500 | 0.88 | 13,111,140 | 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. |