CUSIP: 984121103 Class: COM
Note: Option positions (PUT/CALL) are excluded.
| Period | Shares | Value ($000) | Average Close | Price Range |
|---|---|---|---|---|
| Q1 2017 | 36,166 | $265 | — | — |
| Q4 2016 | 92,354 | $806 | — | — |
| Q3 2016 | 64,842,053 | $656,850 | — | — |
| Q2 2016 | 67,253,384 | $638,235 | — | — |
| Q1 2016 | 62,607,505 | $698,700 | — | — |
| Q4 2015 | 57,715,056 | $613,539 | — | — |
| Q3 2015 | 56,502,339 | $549,767 | — | — |
| Q2 2015 | 53,855,541 | $573,023 | — | — |
| Q1 2015 | 43,422,073 | $557,974 | — | — |
| Q4 2014 | 39,165,712 | $542,837 | — | — |
| Q3 2014 | 36,873,697 | $487,839 | — | — |
| Q2 2014 | 35,814,354 | $445,531 | — | — |
| Q1 2014 | 36,974,492 | $417,812 | — | — |
| Q4 2013 | 35,178,334 | $428,120 | — | — |
| Q3 2013 | 34,203,888 | $351,958 | — | — |
| Q2 2013 | 33,940,389 | $307,840 | — | — |