CUSIP: 989837109 Class: COM
Note: Option positions (PUT/CALL) are excluded.
| Period | Shares | Value ($000) | Average Close | Price Range |
|---|---|---|---|---|
| Q2 2012 | 2,169,419 | $19,940 | — | — |
| Q1 2012 | 4,899,108 | $15,677 | — | — |
| Q4 2011 | 4,278,426 | $12,964 | — | — |
| Q3 2011 | 3,309,717 | $10,023 | — | — |
| Q2 2011 | 1,000,845 | $3,393 | — | — |
| Q1 2011 | 2,252,427 | $7,816 | — | — |
| Q3 2010 | 185,000 | $705 | — | — |
| Q4 2009 | 14,900 | $49 | — | — |