| Company | Shares | %Out | Value ($)
| Reported | Change | | BlackRock Fund Advisors | 2,097,405 | 7.78 | 94,173,485 | 3/31/2013 | 139,353 | | Vanguard Group Inc. | 1,637,920 | 6.08 | 73,542,608 | 3/31/2013 | 4,709 | | Parnassus Funds Distributor | 1,600,000 | 5.94 | 71,840,000 | 3/31/2013 | 36,871 | | JPMorgan Asset Management | 1,015,436 | 3.77 | 45,593,076 | 3/31/2013 | 40,640 | | TAMRO Capital Partners LLC | 853,504 | 3.17 | 38,322,330 | 3/31/2013 | 25,631 | | Duff & Phelps Investment Management Co. | 839,370 | 3.11 | 37,687,713 | 3/31/2013 | 2,620 | | State Street Global Advisors Inc. | 561,120 | 2.08 | 25,194,288 | 3/31/2013 | 11,281 | | Norges Bank Investment Management | 232,017 | .86 | 10,417,563 | 12/31/2012 | 22,681 | | Citadel Advisors LLC | 164,092 | .61 | 7,367,731 | 3/31/2013 | 44,378 | | ING Investment Management Advisors B V | 162,665 | .60 | 7,303,659 | 3/31/2013 | 41,165 | | Invesco PowerShares Capital Management LLC | 155,255 | .58 | 6,970,950 | 3/31/2013 | 1,174 | | TIAA-CREF Asset Management LLC | 152,188 | .56 | 6,833,241 | 3/31/2013 | 1 | | Principal Global Investors LLC | 145,271 | .54 | 6,522,668 | 3/31/2013 | 4,920 | | Hennessy Advisors Inc. | 139,297 | .52 | 6,254,435 | 3/31/2013 | 5,100 | | First Washington Corp. | 126,659 | .47 | 5,686,989 | 3/31/2013 | 19,887 | | Mellon Capital Management Corp. | 124,634 | .46 | 5,596,067 | 3/31/2013 | 17,583 | | Geode Capital Management LLC | 114,004 | .42 | 5,118,780 | 3/31/2013 | 1,525 | | First Trust Advisors LP | 113,290 | .42 | 5,086,721 | 3/31/2013 | 20,087 | | BlackRock Advisors LLC | 109,609 | .41 | 4,921,444 | 3/31/2013 | 1,973 | | Richard C. Young & Co Ltd. | 109,594 | .41 | 4,920,771 | 3/31/2013 | 2,608 | | BlackRock Investment Management LLC | 104,926 | .39 | 4,711,177 | 3/31/2013 | 707 | | Millennium Management LLC | 102,844 | .38 | 4,617,696 | 3/31/2013 | 102,844 | | Charles Schwab Investment Management Inc. | 75,985 | .28 | 3,411,727 | 3/31/2013 | 5,910 | | Dreyfus Investment Advisors LLC | 75,235 | .28 | 3,378,052 | 3/31/2013 | 3,848 | | JPMorgan Securities Inc. | 73,334 | .27 | 3,292,697 | 3/31/2013 | 22,175 | | ClearBridge Investments LLC | 68,760 | .26 | 3,087,324 | 3/31/2013 | 58 | | Parametric Portfolio Associates LLC | 62,074 | .23 | 2,787,123 | 3/31/2013 | 4,463 | | California Public Employees' Retirement System | 51,263 | .19 | 2,301,709 | 3/31/2013 | 32,000 | | Morgan Stanley Smith Barney LLC | 51,126 | .19 | 2,295,557 | 3/31/2013 | 956 | | Bank of America Merrill Lynch | 46,748 | .17 | 2,098,985 | 3/31/2013 | 21,071 | | Legal & General Investment Management Ltd. | 44,051 | .16 | 1,977,890 | 3/31/2013 | 13,403 | | PDT Partners LLC | 39,506 | .15 | 1,773,819 | 3/31/2013 | 39,506 | | Cushing MLP Asset Management LP | 35,000 | .13 | 1,571,500 | 3/31/2013 | 35,000 | | Robert W. Baird & Co. Inc. | 34,349 | .13 | 1,542,270 | 3/31/2013 | 34,349 | | Nuveen Asset Management LLC | 34,216 | .13 | 1,536,298 | 3/31/2013 | 477 | | Texas Permanent School Fund | 33,252 | .12 | 1,493,015 | 12/31/2012 | 168 | | Goldman Sachs & Co. | 32,594 | .12 | 1,463,471 | 3/31/2013 | 3,481 | | McAdams Wright Ragen Inc. | 32,365 | .12 | 1,453,189 | 3/31/2013 | 32,365 | | Commonwealth Equity Services, Inc. | 28,302 | .11 | 1,270,760 | 3/31/2013 | 292 | | Comerica Bank | 28,287 | .10 | 1,270,086 | 3/31/2013 | 415 | | Rows 1 through 40 of 95 |
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