CUSIP: 984121103 Class: COM
Note: Option positions (PUT/CALL) are excluded.
| Period | Shares | Value ($000) | Average Close | Price Range |
|---|---|---|---|---|
| Q1 2017 | 24,320 | $212 | — | — |
| Q4 2016 | 24,320 | $212 | — | — |
| Q3 2016 | 29,720 | $301 | — | — |
| Q2 2016 | 37,770 | $358 | — | — |
| Q1 2016 | 40,270 | $449 | — | — |
| Q4 2015 | 40,770 | $433 | — | — |
| Q3 2015 | 43,020 | $419 | — | — |
| Q2 2015 | 43,020 | $458 | — | — |
| Q1 2015 | 42,520 | $546 | — | — |
| Q4 2014 | 43,120 | $598 | — | — |