CUSIP: 984121103 Class: COM
Note: Option positions (PUT/CALL) are excluded.
| Period | Shares | Value ($000) | Average Close | Price Range |
|---|---|---|---|---|
| Q1 2017 | 73,779 | $528 | — | — |
| Q4 2016 | 78,285 | $550 | — | — |
| Q3 2016 | 40,238 | $396 | — | — |
| Q2 2016 | 41,001 | $382 | — | — |
| Q1 2016 | 30,680 | $343 | — | — |
| Q4 2015 | 32,509 | $346 | — | — |
| Q3 2015 | 29,022 | $282 | — | — |
| Q2 2015 | 26,604 | $283 | — | — |
| Q1 2015 | 15,061 | $194 | — | — |
| Q4 2014 | 16,327 | $226 | — | — |
| Q2 2014 | 10,828 | $135 | — | — |
| Q1 2014 | 10,340 | $117 | — | — |