CUSIP: 984121103 Class: COM
Note: Option positions (PUT/CALL) are excluded.
| Period | Shares | Value ($000) | Average Close | Price Range |
|---|---|---|---|---|
| Q1 2017 | 15,464 | $113 | — | — |
| Q3 2016 | 11,411,408 | $115,598 | — | — |
| Q2 2016 | 37,280,734 | $353,792 | — | — |
| Q1 2016 | 43,520,927 | $485,694 | — | — |
| Q4 2015 | 48,407,513 | $514,573 | — | — |
| Q3 2015 | 50,622,662 | $492,560 | — | — |
| Q2 2015 | 51,673,547 | $549,807 | — | — |
| Q1 2015 | 51,724,316 | $664,657 | — | — |
| Q4 2014 | 52,235,659 | $723,987 | — | — |
| Q3 2014 | 52,750,014 | $697,882 | — | — |
| Q2 2014 | 62,283,627 | $774,806 | — | — |
| Q1 2014 | 62,088,106 | $701,595 | — | — |
| Q4 2013 | 62,266,507 | $757,783 | — | — |
| Q3 2013 | 63,511,371 | $653,531 | — | — |
| Q2 2013 | 64,817,718 | $587,898 | — | — |