| Year | Qtr | # Shares | Change |
|---|---|---|---|
| 2015 | Q1 | 0 | Liquidated |
| 2014 | Q4 | 230,322 | +13,162 |
| 2014 | Q3 | 217,160 | +61,564 |
| 2014 | Q2 | 155,596 | +24,088 |
| 2014 | Q1 | 131,508 | -90,836 |
| 2013 | Q4 | 222,344 | -17,227 |
| 2013 | Q3 | 239,571 | +6,923 |
| 2013 | Q2 | 232,648 | -11,023 |
| 2013 | Q1 | 243,671 | +4,134 |
| 2012 | Q4 | 239,537 | +47,401 |
| 2012 | Q3 | 192,136 | +29,369 |
| 2012 | Q2 | 162,767 | -14,380 |
| 2012 | Q1 | 177,147 | -46,003 |
| 2011 | Q4 | 223,150 | +2,829 |
| 2011 | Q3 | 220,321 | -821,698 |
| 2011 | Q2 | 1,042,019 | -33,622 |
| 2011 | Q1 | 1,075,641 |