| Top Institutional Holders |
|---|
| Holder | Shares | % Out | Value* | Reported |
|---|
| Susquehanna International Group, LLP | 267,976 | 4.55 | 401,964 | Mar 31, 2013 | | Perkins Capital Management, Inc. | 924,688 | 15.69 | 1,387,032 | Mar 31, 2013 | | Marathon Capital Management | 642,500 | 10.90 | 963,750 | Mar 31, 2013 | | BlackRock Institutional Trust Company, N.A. | 81,960 | 1.39 | 122,940 | Mar 31, 2013 | | Dimensional Fund Advisors LP | 42,070 | 0.71 | 63,105 | Mar 31, 2013 | | Vanguard Group, Inc. (The) | 21,347 | 0.36 | 32,020 | Mar 31, 2013 | | Renaissance Technologies, LLC | 12,460 | 0.21 | 18,690 | Mar 31, 2013 | | Geode Capital Management, LLC | 11,934 | 0.20 | 17,901 | Mar 31, 2013 | | Brown Advisory Inc. | 11,000 | 0.19 | 16,500 | Mar 31, 2013 | | CALPERS (California-Public Employees Retirement System) | 7,860 | 0.13 | 11,790 | Mar 31, 2013 |
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| Holder | Shares | % Out | Value* | Reported |
|---|
| Vanguard Extended Market Index Fund | 21,347 | 0.36 | 42,694 | Dec 31, 2012 | | DFA U.S. Small Cap Value Series | 15,593 | 0.26 | 29,158 | Jan 31, 2013 | | Spartan Extended Market Index Fund | 11,934 | 0.20 | 17,901 | Mar 31, 2013 | | DFA U.S. Small Cap Series | 7,439 | 0.13 | 13,910 | Jan 31, 2013 | | Claymore ETF Tr-Wilshire Micro Cap ETF | 7,322 | 0.12 | 10,983 | Mar 31, 2013 | | DFA U.S. Micro Cap Series | 5,171 | 0.09 | 9,669 | Jan 31, 2013 | | DFA U.S. Core Equity 2 Portfolio | 381 | 0.01 | 712 | Jan 31, 2013 | | DFA U.S. Vector Equity Portfolio | 354 | 0.01 | 661 | Jan 31, 2013 | | Wilshire Mutual Funds, Inc.-Dow Jones Wilshire 5000 Index Po | 40 | 0.00 | 80 | 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. |
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