| Top Institutional Holders |
|---|
| Holder | Shares | % Out | Value* | Reported |
|---|
| Vanguard Group, Inc. (The) | 3,716,696 | 4.20 | 48,317,048 | Mar 31, 2013 | | State of New Jersey Common Pension Fund A | 2,100,000 | 2.37 | 27,300,000 | Mar 31, 2013 | | State Street Corporation | 1,985,443 | 2.24 | 25,810,759 | Mar 31, 2013 | | BlackRock Institutional Trust Company, N.A. | 1,887,977 | 2.13 | 24,543,701 | Mar 31, 2013 | | BlackRock Fund Advisors | 1,582,294 | 1.79 | 20,569,822 | Mar 31, 2013 | | Dimensional Fund Advisors LP | 1,461,116 | 1.65 | 18,994,508 | Mar 31, 2013 | | Granahan Investment Management Inc. | 1,389,400 | 1.57 | 18,062,200 | Mar 31, 2013 | | Temasek Holdings (Private) Limited | 1,341,090 | 1.52 | 17,434,170 | Mar 31, 2013 | | Northern Trust Corporation | 980,832 | 1.11 | 12,750,816 | Mar 31, 2013 | | Shaw D.E. & Co., Inc. | 929,482 | 1.05 | 12,083,266 | Mar 31, 2013 |
|
| Holder | Shares | % Out | Value* | Reported |
|---|
| Vanguard Explorer Fund, Inc. | 1,224,520 | 1.38 | 15,686,101 | Jan 31, 2013 | | iShares Russell 2000 Index Fund | 1,045,097 | 1.18 | 13,784,829 | Apr 30, 2013 | | Vanguard Total Stock Market Index Fund | 968,884 | 1.09 | 12,595,492 | Mar 31, 2013 | | Vanguard Small-Cap Index Fund | 923,785 | 1.04 | 12,009,205 | Mar 31, 2013 | | SPDR (R) Ser Tr-SPDR (R) S&P (R) Oil & Gas Explor & Prod ETF | 862,778 | 0.97 | 11,380,041 | Apr 30, 2013 | | Vanguard Small-Cap Growth Index Fund | 836,383 | 0.94 | 10,872,979 | Mar 31, 2013 | | Vanguard Extended Market Index Fund | 567,958 | 0.64 | 7,383,454 | Mar 31, 2013 | | iShares Russell 2000 Growth Index Fund | 453,973 | 0.51 | 5,987,903 | Apr 30, 2013 | | DFA U.S. Small Cap Series | 409,703 | 0.46 | 5,248,295 | Jan 31, 2013 | | Muhlenkamp Fund (The) | 335,000 | 0.38 | 4,355,000 | 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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