| Year | Qtr | # Shares | Change |
|---|---|---|---|
| 2015 | Q3 | 0 | Liquidated |
| 2015 | Q2 | 508,460 | -67,531 |
| 2015 | Q1 | 575,991 | +234,941 |
| 2014 | Q4 | 341,050 | +69,102 |
| 2014 | Q3 | 271,948 | -13,559 |
| 2014 | Q2 | 285,507 | -28,633 |
| 2014 | Q1 | 314,140 | -87,499 |
| 2013 | Q4 | 401,639 | -18,730 |
| 2013 | Q3 | 420,369 | -94,154 |
| 2013 | Q2 | 514,523 | +16,668 |
| 2013 | Q1 | 497,855 | +72,878 |
| 2012 | Q4 | 424,977 | +69,650 |
| 2012 | Q3 | 355,327 | -12,225 |
| 2012 | Q2 | 367,552 | +39,990 |
| 2012 | Q1 | 327,562 | +5,059 |
| 2011 | Q4 | 322,503 |