CUSIP: 984121103 Class: COM
Note: Option positions (PUT/CALL) are excluded.
| Period | Shares | Value ($000) | Average Close | Price Range |
|---|---|---|---|---|
| Q1 2015 | 497,579 | $6,393,890 | — | — |
| Q4 2014 | 50,545 | $700,554 | — | — |
| Q3 2014 | 529,041 | $6,999,212 | — | — |
| Q2 2014 | 540,954 | $6,729,468 | — | — |
| Q1 2014 | 546,123 | $6,171,190 | — | — |
| Q4 2013 | 555,041 | $6,754,849 | — | — |
| Q3 2013 | 559,724 | $5,759,560 | — | — |