| Top Institutional Holders |
|---|
| Holder | Shares | % Out | Value* | Reported |
|---|
| Systematic Financial Management, L.P. | 1,495,083 | 7.89 | 19,002,504 | 2013-03-31 | | Dimensional Fund Advisors LP | 1,096,584 | 5.78 | 13,937,582 | 2013-03-31 | | Gruber & Mcbaine Capital Management LLC | 1,028,121 | 5.42 | 13,067,417 | 2013-03-31 | | Marxe, Austin W. & Greenhouse, David M. | 1,020,305 | 5.38 | 12,968,076 | 2013-03-31 | | Wealthtrust Axiom, LLC | 733,356 | 3.87 | 9,320,954 | 2013-03-31 | | Wellington Management Company, LLP | 628,624 | 3.32 | 7,989,811 | 2013-03-31 | | Connors Investor Services, Inc. | 467,595 | 2.47 | 5,943,132 | 2013-03-31 | | Driehaus Capital Management, Inc. | 441,294 | 2.33 | 5,608,846 | 2013-03-31 | | Vanguard Group, Inc. (The) | 403,959 | 2.13 | 5,134,318 | 2013-03-31 | | BlackRock Institutional Trust Company, N.A. | 385,469 | 2.03 | 4,899,310 | 2013-03-31 |
|
| Holder | Shares | % Out | Value* | Reported |
|---|
| Transamerica Small/Mid Cap Value Fund | 334,061 | 1.76 | 2,902,990 | 2013-01-31 | | DFA U.S. Small Cap Value Series | 296,322 | 1.56 | 2,575,038 | 2013-01-31 | | PowerShares Exchange Traded Funds Tr-PwrShs Wilderhill Clean | 250,759 | 1.32 | 3,435,398 | 2013-04-30 | | Vanguard Total Stock Market Index Fund | 209,706 | 1.11 | 1,637,803 | 2012-12-31 | | DFA U.S. Micro Cap Series | 169,330 | 0.89 | 1,471,477 | 2013-01-31 | | Transamerica Ser Tr-Transamerica Systematic Small/Mid Cap Va | 163,000 | 0.86 | 1,273,030 | 2012-12-31 | | Vanguard Extended Market Index Fund | 112,688 | 0.59 | 880,093 | 2012-12-31 | | Bridgeway Funds Inc-Ultra Small Company Market Fund | 92,600 | 0.49 | 1,176,946 | 2013-03-31 | | DFA U.S. Targeted Value Portfolio | 89,370 | 0.47 | 776,625 | 2013-01-31 | | DFA Tax Managed U.S. Targeted Value Port | 76,707 | 0.40 | 666,583 | 2013-01-31 |
|
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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