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American Dental Partners, Inc.
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Athersys, Inc.
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Alaska Communications Systems Group Inc.
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| 2011-01-19 | 4.45 | 4.39 | 513500 |
| 2011-01-18 | 4.47 | 4.47 | 184900 |
| 2011-01-14 | 4.45 | 4.49 | 382600 |
| 2011-01-13 | 4.39 | 4.44 | 1175600 |
| 2011-01-12 | 4.30 | 4.34 | 429400 |
| 2011-01-11 | 4.24 | 4.25 | 403400 |
| 2011-01-10 | 4.13 | 4.22 | 409500 |
| 2011-01-07 | 4.08 | 4.15 | 284100 |
| 2011-01-06 | 4.10 | 4.06 | 617100 |
| 2011-01-05 | 4.03 | 4.10 | 333100 |
| 2011-01-04 | 4.05 | 4.03 | 230900 |
| 2011-01-03 | 4.01 | 4.05 | 456800 |
| 2010-12-31 | 3.97 | 3.89 | 200800 |
| 2010-12-30 | 3.95 | 3.97 | 153100 |
| 2010-12-29 | 3.97 | 3.95 | 120000 |
| 2010-12-28 | 3.97 | 3.95 | 116000 |
| 2010-12-27 | 3.95 | 3.98 | 189500 |
| 2010-12-23 | 3.96 | 3.97 | 100600 |
| 2010-12-22 | 3.94 | 3.97 | 103600 |
| 2010-12-21 | 3.92 | 3.93 | 199200 |
| 2010-12-20 | 3.87 | 3.88 | 246900 |
| 2010-12-17 | 3.98 | 3.86 | 583100 |
| 2010-12-16 | 3.98 | 3.97 | 195500 |
| 2010-12-15 | 4.02 | 3.98 | 198400 |
| 2010-12-14 | 4.02 | 4.02 | 202200 |
| 2010-12-13 | 4.04 | 3.99 | 270500 |
| 2010-12-10 | 4.00 | 4.03 | 304500 |
| 2010-12-09 | 4.02 | 4.00 | 430800 |
| 2010-12-08 | 4.02 | 3.98 | 259400 |
| 2010-12-07 | 4.01 | 4.02 | 310900 |
| 2010-12-06 | 3.99 | 4.00 | 292400 |
| 2010-12-03 | 3.83 | 3.99 | 379800 |
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