| Year | Qtr | # Shares | Change |
|---|---|---|---|
| 2013 | Q4 | 0 | Liquidated |
| 2013 | Q3 | 1,522,324 | +324,204 |
| 2013 | Q2 | 1,198,120 | +167,463 |
| 2013 | Q1 | 1,030,657 | +1,660 |
| 2012 | Q4 | 1,028,997 | +291,264 |
| 2012 | Q3 | 737,733 | +4,243 |
| 2012 | Q2 | 733,490 | +61,077 |
| 2012 | Q1 | 672,413 | +66,567 |
| 2011 | Q4 | 605,846 | -196,375 |
| 2011 | Q3 | 802,221 | -326,911 |
| 2011 | Q2 | 1,129,132 | -58,392 |
| 2011 | Q1 | 1,187,524 |