| Date | Open | Close | Volume |
| 2010-03-03 | 1.23 | 1.14 | 2016800 |
| 2010-03-02 | 1.07 | 1.20 | 5598200 |
| 2010-03-01 | 1.02 | 1.07 | 1636500 |
| 2010-02-26 | 1.07 | 1.04 | 1446500 |
| 2010-02-25 | 1.08 | 1.06 | 1564800 |
| 2010-02-24 | 1.05 | 1.09 | 3439800 |
| 2010-02-23 | 1.02 | 1.04 | 1370100 |
| 2010-02-22 | 1.06 | 1.02 | 1296500 |
| 2010-02-19 | 1.14 | 1.04 | 2316800 |
| 2010-02-18 | 1.01 | 1.14 | 5895100 |
| 2010-02-17 | 0.99 | 1.01 | 4362000 |
| 2010-02-16 | 0.85 | 0.98 | 4535700 |
| 2010-02-12 | 0.84 | 0.84 | 362700 |
| 2010-02-11 | 0.81 | 0.84 | 338400 |
| 2010-02-10 | 0.81 | 0.81 | 396600 |
| 2010-02-09 | 0.81 | 0.81 | 459100 |
| 2010-02-08 | 0.81 | 0.81 | 535500 |
| 2010-02-05 | 0.84 | 0.83 | 298300 |
| 2010-02-04 | 0.82 | 0.83 | 947600 |
| 2010-02-03 | 0.85 | 0.83 | 551900 |
| 2010-02-02 | 0.88 | 0.85 | 453900 |
| 2010-02-01 | 0.84 | 0.87 | 1274600 |
| 2010-01-29 | 0.82 | 0.83 | 789800 |
| 2010-01-28 | 0.84 | 0.82 | 478000 |
| 2010-01-27 | 0.82 | 0.83 | 417400 |
| 2010-01-26 | 0.84 | 0.82 | 665400 |
| 2010-01-25 | 0.83 | 0.85 | 591500 |
| 2010-01-22 | 0.85 | 0.84 | 452200 |
| 2010-01-21 | 0.85 | 0.86 | 707300 |
| 2010-01-20 | 0.86 | 0.86 | 680500 |
| 2010-01-19 | 0.85 | 0.87 | 953300 |
| 2010-01-15 | 0.90 | 0.85 | 1553900 |
Other Companies: 03-24-2007 | Ultra Yen ProShares | 04-04-2009
deCODE genetics Inc. | 02-25-2009 | Amedisys Inc.