CUSIP: 98872B104 Class: COM
Note: Option positions (PUT/CALL) are excluded.
| Period | Shares | Value ($000) | Average Close | Price Range |
|---|---|---|---|---|
| Q4 2017 | 56,400 | $270 | — | — |
| Q3 2017 | 60,800 | $282 | — | — |
| Q2 2017 | 31,000 | $146 | — | — |
| Q1 2017 | 33,700 | $138 | — | — |
| Q4 2016 | 44,600 | $160 | — | — |
| Q3 2016 | 53,000 | $210 | — | — |
| Q2 2016 | 40,800 | $150 | — | — |
| Q4 2015 | 10,900 | $38 | — | — |
| Q2 2015 | 15,201 | $82 | — | — |