CUSIP: 984121103 Class: COM
Note: Option positions (PUT/CALL) are excluded.
| Period | Shares | Value ($000) | Average Close | Price Range |
|---|---|---|---|---|
| Q1 2017 | 20,349 | $149 | — | — |
| Q4 2016 | 20,349 | $178 | — | — |
| Q3 2016 | 20,349 | $206 | — | — |
| Q2 2016 | 17,929 | $170 | — | — |
| Q1 2016 | 17,929 | $200 | — | — |
| Q4 2015 | 17,929 | $191 | — | — |
| Q3 2015 | 19,429 | $189 | — | — |
| Q2 2015 | 19,429 | $207 | — | — |
| Q1 2015 | 20,152 | $259 | — | — |
| Q4 2014 | 20,152 | $279 | — | — |
| Q3 2014 | 20,152 | $267 | — | — |
| Q2 2014 | 22,011 | $274 | — | — |
| Q1 2014 | 22,011 | $249 | — | — |
| Q4 2013 | 24,522 | $298 | — | — |
| Q3 2013 | 24,522 | $252 | — | — |