| Date | Open | High | Low | Close | Volume |
|---|---|---|---|---|---|
| Jul 29, 2011 | 162.75 | 162.75 | 162.75 | 162.75 | 400 |
| Jul 28, 2011 | 161.50 | 162.75 | 161.50 | 162.75 | 400 |
| Jul 27, 2011 | 154.75 | 161.50 | 154.00 | 161.50 | 2.2K |
| Jul 26, 2011 | 161.50 | 161.50 | 161.50 | 161.50 |
| 200 |
| Jul 25, 2011 | 159.00 | 161.50 | 151.00 | 161.25 | 2K |
| Jul 22, 2011 | 155.50 | 159.00 | 155.50 | 159.00 | 400 |
| Jul 21, 2011 | 156.00 | 162.50 | 155.50 | 162.50 | 1.4K |
| Jul 20, 2011 | 158.00 | 161.75 | 156.00 | 161.75 | 3.6K |
| Jul 19, 2011 | 156.00 | 164.50 | 156.00 | 164.50 | 3K |
| Jul 15, 2011 | 170.00 | 170.00 | 170.00 | 170.00 | 200 |
| Jul 14, 2011 | 170.00 | 170.00 | 170.00 | 170.00 | 0 |
| Jul 13, 2011 | 170.00 | 170.00 | 170.00 | 170.00 | 200 |
| Jul 12, 2011 | 171.00 | 171.00 | 171.00 | 171.00 | 200 |
| Jul 11, 2011 | 171.00 | 171.00 | 171.00 | 171.00 | 200 |
| Jul 8, 2011 | 173.50 | 173.50 | 166.25 | 167.50 | 1.2K |
| Jul 7, 2011 | 174.50 | 174.50 | 174.50 | 174.50 | 4K |
| Jul 6, 2011 | 174.50 | 174.50 | 174.50 | 174.50 | 4K |
| Jul 5, 2011 | 174.50 | 174.50 | 174.50 | 174.50 | 4K |
| Jul 4, 2011 | 169.50 | 174.50 | 169.50 | 174.50 | 4K |
| Jul 1, 2011 | 180.00 | 180.00 | 180.00 | 180.00 | 3.2K |
| Jun 30, 2011 | 197.00 | 197.00 | 172.50 | 184.50 | 3.2K |
| Jun 29, 2011 | 171.00 | 188.50 | 171.00 | 188.50 | 4K |
| Jun 28, 2011 | 199.00 | 199.00 | 199.00 | 199.00 | 200 |
| Jun 27, 2011 | 199.00 | 199.00 | 199.00 | 199.00 | 200 |
| Jun 24, 2011 | 199.00 | 199.00 | 199.00 | 199.00 | 200 |
| Jun 23, 2011 | 190.00 | 199.00 | 190.00 | 192.00 | 600 |
| Jun 22, 2011 | 168.00 | 181.50 | 168.00 | 181.50 | 600 |
| Jun 21, 2011 | 182.00 | 182.00 | 182.00 | 182.00 | 2.4K |
| Jun 20, 2011 | 182.00 | 182.00 | 182.00 | 182.00 | 2.4K |
| Jun 17, 2011 | 172.50 | 182.00 | 172.50 | 182.00 | 2.4K |