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VANGUARD GROUP INC
> COGT
| Date | Name | Ticker | Shares | Change | Value | Change | Price |
| 09/30/2010 | Cogent, Inc. | COGT | 2,338,535 | 119,786 | 24,882,000 | 4,891,000 | $10.64 |
| 06/30/2010 | Cogent, Inc. | COGT | 2,218,749 | 347,444 | 19,991,000 | 903,000 | $9.01 |
| 03/31/2010 | Cogent, Inc. | COGT | 1,871,305 | 51,486 | 19,088,000 | 180,000 | $10.20 |
| 12/31/2009 | Cogent, Inc. | COGT | 1,819,819 | -420,679 | 18,908,000 | -3,721,000 | $10.39 |
| 09/30/2009 | Cogent, Inc. | COGT | 2,240,498 | 75,130 | 22,629,000 | 165,000 | $10.10 |
| 06/30/2009 | Cogent, Inc. | COGT | 2,165,368 | 100,495 | 22,464,000 | -2,108,000 | $10.37 |
| 03/31/2009 | Cogent, Inc. | COGT | 2,064,873 | 381,256 | 24,572,000 | 1,726,000 | $11.90 |
| 12/31/2008 | Cogent, Inc. | COGT | 1,683,617 | -159,929 | 22,846,000 | 4,005,000 | $13.57 |
| 09/30/2008 | Cogent, Inc. | COGT | 1,843,546 | 1,823,897 | 18,841,000 | 17,112,850 | $10.22 |
| 06/30/2008 | Cogent, Inc. | COGT | 19,649 | 7,559 | 1,728,150 | 446,123 | $87.95 |
| 03/31/2008 | Cogent, Inc. | COGT | 12,090 | 12,090 | 1,282,027 | 1,282,027 | $106.04 |
| 12/31/2007 | Cogent, Inc. | COGT | 13,662 | 13,662 | 1,225,275 | 1,225,275 | $89.68 |
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