| Top Institutional Holders |
|---|
| Holder | Shares | % Out | Value* | Reported |
|---|
| Renaissance Technologies, LLC | 289,500 | 2.22 | 411,090 | Mar 31, 2013 | | UBS AG | 6,789 | 0.05 | 9,640 | Mar 31, 2013 | | Tower Research Capital LLC | 79 | 0.00 | 112 | Mar 31, 2013 |
|
| Holder | Shares | % Out | Value* | Reported |
|---|
| Fidelity NASDAQ Composite Index Fund | 926 | 0.01 | 1,314 | Mar 31, 2013 |
|
Value shown is computed using the security's price on the report date given. Currency in USD. |