| Date | Open | High | Low | Close | Volume |
|---|---|---|---|---|---|
| Mar 16, 2011 | 164.50 | 199.50 | 164.50 | 199.50 | 21.6K |
| Mar 15, 2011 | 205.00 | 205.00 | 165.50 | 199.50 | 6.8K |
| Mar 14, 2011 | 210.50 | 210.50 | 210.50 | 210.50 | 0 |
| Mar 11, 2011 | 213.00 | 214.00 | 207.00 | 210.50 |
| 1.6K |
| Mar 10, 2011 | 214.00 | 214.00 | 214.00 | 214.00 | 400 |
| Mar 9, 2011 | 210.00 | 210.00 | 210.00 | 210.00 | 400 |
| Mar 8, 2011 | 214.25 | 214.25 | 214.25 | 214.25 | 0 |
| Mar 7, 2011 | 214.25 | 214.25 | 214.25 | 214.25 | 200 |
| Mar 4, 2011 | 207.50 | 211.00 | 207.50 | 211.00 | 800 |
| Mar 3, 2011 | 206.50 | 213.50 | 205.50 | 211.00 | 2.8K |
| Mar 2, 2011 | 216.25 | 216.25 | 208.00 | 213.50 | 1.4K |
| Mar 1, 2011 | 217.00 | 217.00 | 217.00 | 217.00 | 400 |
| Feb 28, 2011 | 217.00 | 217.00 | 217.00 | 217.00 | 600 |
| Feb 25, 2011 | 222.50 | 222.50 | 212.25 | 219.50 | 1.8K |
| Feb 24, 2011 | 222.50 | 222.50 | 219.00 | 222.50 | 1K |
| Feb 23, 2011 | 222.50 | 222.50 | 222.50 | 222.50 | 600 |
| Feb 22, 2011 | 223.50 | 223.50 | 222.50 | 222.50 | 18.6K |
| Feb 21, 2011 | 222.50 | 224.00 | 222.50 | 224.00 | 600 |
| Feb 18, 2011 | 222.50 | 222.50 | 222.50 | 222.50 | 400 |
| Feb 17, 2011 | 222.50 | 222.50 | 222.50 | 222.50 | 400 |
| Feb 16, 2011 | 220.25 | 222.50 | 220.25 | 222.50 | 600 |
| Feb 15, 2011 | 223.50 | 223.50 | 223.50 | 223.50 | 800 |
| Feb 14, 2011 | 215.00 | 225.00 | 215.00 | 225.00 | 1.6K |
| Feb 10, 2011 | 212.00 | 215.00 | 212.00 | 215.00 | 2.6K |
| Feb 9, 2011 | 213.50 | 220.50 | 210.00 | 220.50 | 7K |
| Feb 8, 2011 | 210.00 | 213.50 | 210.00 | 213.50 | 800 |
| Feb 7, 2011 | 206.00 | 213.50 | 206.00 | 210.00 | 3K |
| Feb 4, 2011 | 206.25 | 206.25 | 206.25 | 206.25 | 400 |
| Feb 3, 2011 | 206.50 | 206.50 | 206.50 | 206.50 | 200 |
| Feb 2, 2011 | 201.50 | 206.50 | 201.50 | 206.50 | 1.4K |