| Date | Open | High | Low | Close | Volume |
|---|---|---|---|---|---|
| Jun 7, 2011 | 12.08 | 12.08 | 11.85 | 11.86 | 529.79M |
| Jun 6, 2011 | 12.35 | 12.39 | 12.06 | 12.07 | 461.94M |
| Jun 3, 2011 | 12.26 | 12.33 | 12.21 | 12.27 | 313.25M |
| Jun 2, 2011 | 12.38 | 12.43 |
| 12.30 |
| 12.36 |
| 338.78M |
| Jun 1, 2011 | 12.46 | 12.58 | 12.31 | 12.34 | 554.68M |
| May 31, 2011 | 12.18 | 12.42 | 12.18 | 12.42 | 417.75M |
| May 27, 2011 | 11.96 | 12.06 | 11.94 | 12.05 | 203.6M |
| May 26, 2011 | 12.00 | 12.03 | 11.94 | 11.96 | 222.56M |
| May 25, 2011 | 11.91 | 12.09 | 11.89 | 12.03 | 294.22M |
| May 24, 2011 | 11.98 | 12.00 | 11.83 | 11.86 | 321.93M |
| May 23, 2011 | 11.78 | 12.00 | 11.77 | 11.94 | 383.6M |
| May 20, 2011 | 12.13 | 12.18 | 11.97 | 11.97 | 337.97M |
| May 19, 2011 | 12.22 | 12.23 | 12.10 | 12.16 | 261.17M |
| May 18, 2011 | 12.02 | 12.18 | 12.00 | 12.14 | 334.78M |
| May 17, 2011 | 11.86 | 12.01 | 11.81 | 12.01 | 452.33M |
| May 16, 2011 | 12.11 | 12.19 | 11.88 | 11.90 | 449.78M |
| May 13, 2011 | 12.35 | 12.37 | 12.16 | 12.16 | 326.12M |
| May 12, 2011 | 12.36 | 12.40 | 12.22 | 12.38 | 322M |
| May 11, 2011 | 12.47 | 12.50 | 12.33 | 12.40 | 336M |
| May 10, 2011 | 12.46 | 12.49 | 12.38 | 12.48 | 282.09M |
| May 9, 2011 | 12.42 | 12.47 | 12.38 | 12.41 | 204.75M |
| May 6, 2011 | 12.49 | 12.50 | 12.36 | 12.38 | 280.13M |
| May 5, 2011 | 12.44 | 12.53 | 12.36 | 12.38 | 335.97M |
| May 4, 2011 | 12.44 | 12.57 | 12.39 | 12.48 | 389.25M |
| May 3, 2011 | 12.43 | 12.50 | 12.34 | 12.44 | 313.35M |
| May 2, 2011 | 12.49 | 12.52 | 12.34 | 12.37 | 442.71M |
| Apr 29, 2011 | 12.39 | 12.64 | 12.38 | 12.50 | 1.01B |
| Apr 28, 2011 | 12.36 | 12.49 | 12.34 | 12.38 | 360.96M |
| Apr 27, 2011 | 12.58 | 12.58 | 12.40 | 12.51 | 356.21M |
| Apr 26, 2011 | 12.63 | 12.68 | 12.48 | 12.52 | 338.8M |