CUSIP: 984121103 Class: COM
Note: Option positions (PUT/CALL) are excluded.
| Period | Shares | Value ($000) | Average Close | Price Range |
|---|---|---|---|---|
| Q4 2016 | 70,320 | $614 | — | — |
| Q3 2016 | 70,320 | $712 | — | — |
| Q2 2016 | 70,320 | $667 | — | — |
| Q1 2016 | 70,320 | $785 | — | — |
| Q4 2015 | 70,320 | $748 | — | — |
| Q3 2015 | 33,891 | $330 | — | — |
| Q2 2015 | 33,891 | $361 | — | — |
| Q1 2015 | 50,427 | $648 | — | — |
| Q4 2014 | 50,427 | $699 | — | — |
| Q3 2014 | 50,427 | $667 | — | — |
| Q2 2014 | 56,645 | $705 | — | — |
| Q1 2014 | 60,800 | $687 | — | — |
| Q4 2013 | 60,800 | $740 | — | — |
| Q3 2013 | 44,200 | $455 | — | — |
| Q2 2013 | 39,100 | $355 | — | — |