| Year | Qtr | # Shares | Change |
|---|---|---|---|
| 2013 | Q4 | 0 | Liquidated |
| 2013 | Q3 | 428,792 | -820,892 |
| 2013 | Q2 | 1,249,684 | -287,515 |
| 2013 | Q1 | 1,537,199 | -187,801 |
| 2012 | Q4 | 1,725,000 | -492,159 |
| 2012 | Q3 | 2,217,159 | -185,016 |
| 2012 | Q2 | 2,402,175 | -2,024,937 |
| 2012 | Q1 | 4,427,112 | -1,751,824 |
| 2011 | Q4 | 6,178,936 | -1,749,286 |
| 2011 | Q3 | 7,928,222 | -1,109,406 |
| 2011 | Q2 | 9,037,628 | -4,081,517 |
| 2011 | Q1 | 13,119,145 | +2,352,712 |
| 2010 | Q4 | 10,766,433 |