CUSIP: 984121103 Class: COM
Note: Option positions (PUT/CALL) are excluded.
| Period | Shares | Value ($000) | Average Close | Price Range |
|---|---|---|---|---|
| Q4 2015 | 21,588 | $229 | — | — |
| Q3 2015 | 22,052 | $215 | — | — |
| Q2 2015 | 22,029 | $234 | — | — |
| Q1 2015 | 22,592 | $290 | — | — |
| Q4 2014 | 22,545 | $312 | — | — |
| Q3 2014 | 22,812 | $302 | — | — |
| Q2 2014 | 22,948 | $285 | — | — |
| Q1 2014 | 23,717 | $268 | — | — |
| Q4 2013 | 14,877 | $181 | — | — |
| Q3 2013 | 11,290 | $116 | — | — |
| Q2 2013 | 36,550 | $331 | — | — |