| Date | Open | Close | Volume |
| 2010-03-03 | 5.54 | 5.53 | 1984900 |
| 2010-03-02 | 5.50 | 5.74 | 1589600 |
| 2010-03-01 | 5.35 | 5.28 | 1538800 |
| 2010-02-26 | 5.52 | 5.59 | 1653200 |
| 2010-02-25 | 5.61 | 5.86 | 1051200 |
| 2010-02-24 | 5.87 | 6.00 | 894600 |
| 2010-02-23 | 6.36 | 6.16 | 993800 |
| 2010-02-22 | 6.62 | 6.61 | 1209400 |
| 2010-02-19 | 6.98 | 7.01 | 523700 |
| 2010-02-18 | 7.04 | 7.05 | 315500 |
| 2010-02-17 | 7.31 | 7.22 | 250700 |
| 2010-02-16 | 7.07 | 7.34 | 433500 |
| 2010-02-12 | 6.97 | 7.12 | 439000 |
| 2010-02-11 | 7.27 | 7.23 | 289400 |
| 2010-02-10 | 7.12 | 7.25 | 687500 |
| 2010-02-09 | 6.85 | 7.01 | 856200 |
| 2010-02-08 | 6.60 | 6.61 | 380100 |
| 2010-02-05 | 6.81 | 6.81 | 837500 |
| 2010-02-04 | 7.05 | 6.72 | 1678500 |
| 2010-02-03 | 7.46 | 7.49 | 895400 |
| 2010-02-02 | 7.15 | 7.92 | 897700 |
| 2010-02-01 | 7.30 | 7.12 | 592900 |
| 2010-01-29 | 7.53 | 7.31 | 469400 |
| 2010-01-28 | 7.88 | 7.41 | 412400 |
| 2010-01-27 | 7.74 | 7.54 | 609200 |
| 2010-01-26 | 8.11 | 7.78 | 468500 |
| 2010-01-25 | 8.33 | 8.11 | 407200 |
| 2010-01-22 | 7.83 | 7.93 | 779300 |
| 2010-01-21 | 8.56 | 8.04 | 717300 |
| 2010-01-20 | 8.60 | 8.57 | 270100 |
| 2010-01-19 | 8.48 | 8.71 | 408600 |
| 2010-01-15 | 8.88 | 8.68 | 366100 |
Other Companies: 04-27-2009 | AEGON NV FLTG PERP | 01-07-2009-1
LECG Corporation | 02-11-2007 | The Gabelli Global Utility & Income Trust