CUSIP: 984121103 Class: COM
Note: Option positions (PUT/CALL) are excluded.
| Period | Shares | Value ($000) | Average Close | Price Range |
|---|---|---|---|---|
| Q1 2017 | 52,500 | $385 | — | — |
| Q4 2016 | 53,500 | $467 | — | — |
| Q3 2016 | 54,200 | $549 | — | — |
| Q2 2016 | 62,500 | $593 | — | — |
| Q1 2016 | 63,700 | $711 | — | — |
| Q4 2015 | 66,700 | $709 | — | — |
| Q3 2015 | 73,400 | $714 | — | — |
| Q2 2015 | 75,600 | $804 | — | — |
| Q1 2015 | 75,300 | $968 | — | — |
| Q4 2014 | 80,700 | $1,119 | — | — |
| Q3 2014 | 83,200 | $1,101 | — | — |
| Q2 2014 | 85,700 | $1,066 | — | — |
| Q1 2014 | 88,300 | $998 | — | — |
| Q4 2013 | 93,200 | $1,134 | — | — |