| Date | Open | Close | Volume |
| 2010-03-02 | 0.58 | 0.61 | 127200 |
| 2010-03-01 | 0.59 | 0.59 | 123200 |
| 2010-02-26 | 0.60 | 0.59 | 99600 |
| 2010-02-25 | 0.59 | 0.61 | 91600 |
| 2010-02-24 | 0.61 | 0.60 | 43500 |
| 2010-02-23 | 0.63 | 0.61 | 69700 |
| 2010-02-22 | 0.64 | 0.63 | 58200 |
| 2010-02-19 | 0.62 | 0.63 | 91100 |
| 2010-02-18 | 0.63 | 0.63 | 39000 |
| 2010-02-17 | 0.63 | 0.63 | 42500 |
| 2010-02-16 | 0.67 | 0.63 | 85300 |
| 2010-02-12 | 0.66 | 0.61 | 137600 |
| 2010-02-11 | 0.64 | 0.66 | 191500 |
| 2010-02-10 | 0.62 | 0.62 | 119700 |
| 2010-02-09 | 0.62 | 0.63 | 202700 |
| 2010-02-08 | 0.61 | 0.60 | 77300 |
| 2010-02-05 | 0.61 | 0.61 | 162800 |
| 2010-02-04 | 0.62 | 0.61 | 73900 |
| 2010-02-03 | 0.65 | 0.64 | 93200 |
| 2010-02-02 | 0.62 | 0.63 | 48700 |
| 2010-02-01 | 0.65 | 0.62 | 298800 |
| 2010-01-29 | 0.67 | 0.65 | 127300 |
| 2010-01-28 | 0.67 | 0.68 | 54100 |
| 2010-01-27 | 0.64 | 0.67 | 105700 |
| 2010-01-26 | 0.67 | 0.65 | 140200 |
| 2010-01-25 | 0.70 | 0.67 | 203400 |
| 2010-01-22 | 0.72 | 0.68 | 301400 |
| 2010-01-21 | 0.73 | 0.72 | 162800 |
| 2010-01-20 | 0.79 | 0.73 | 321300 |
| 2010-01-19 | 0.78 | 0.79 | 113500 |
| 2010-01-15 | 0.79 | 0.78 | 156300 |
| 2010-01-14 | 0.90 | 0.79 | 419300 |
Other Companies: 03-17-2009 | Nuveen Massachusetts Premium Income Municipal Fund | 02-20-2007
Comstock Homebuilding Companies Inc. | 02-03-2009 | School Specialty Inc.