CUSIP: 984121103 Class: COM
Note: Option positions (PUT/CALL) are excluded.
| Period | Shares | Value ($000) | Average Close | Price Range |
|---|---|---|---|---|
| Q1 2017 | 16,507 | $121 | — | — |
| Q4 2016 | 16,473 | $144 | — | — |
| Q3 2016 | 18,262 | $185 | — | — |
| Q2 2016 | 18,644 | $177 | — | — |
| Q1 2016 | 19,046 | $213 | — | — |
| Q4 2015 | 15,315 | $163 | — | — |
| Q3 2015 | 17,790 | $173 | — | — |
| Q2 2015 | 21,574 | $230 | — | — |
| Q1 2015 | 22,692 | $292 | — | — |
| Q4 2014 | 23,976 | $332 | — | — |
| Q3 2014 | 25,954 | $343 | — | — |
| Q2 2014 | 22,247 | $277 | — | — |
| Q1 2014 | 25,309 | $286 | — | — |
| Q4 2013 | 29,576 | $360 | — | — |
| Q3 2013 | 27,963 | $288 | — | — |
| Q2 2013 | 53,481 | $485 | — | — |
| Q1 2013 | 46,002 | $395 | — | — |
| Q4 2012 | 48,664 | $332 | — | — |