| Year | Qtr | # Shares | Change |
|---|---|---|---|
| 2020 | Q4 | 388,700 | +159,200 |
| 2020 | Q3 | 229,500 | |
| 2018 | Q4 | 0 | Liquidated |
| 2018 | Q3 | 346,900 | -880,400 |
| 2018 | Q2 | 1,227,300 | +1,147,300 |
| 2018 | Q1 | 80,000 | |
| 2014 | Q3 | 0 | Liquidated |
| 2014 | Q2 | 68,500 | |
| 2014 | Q1 | 68,500 | |
| 2011 | Q4 | 0 | Liquidated |
| 2011 | Q3 | 160,000 | +160,000 |
| 2011 | Q2 | 0 | Liquidated |
| 2011 | Q1 | 642,700 | -8,738,000 |
| 2010 | Q4 | 9,380,700 |