| View data for the month of: | December 2011 |
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| Date | Trades | Shares |
| 12/30/2011 | 54,650 | 19,315,227 |
| 12/29/2011 | 58,399 | 16,607,264 |
| 12/28/2011 | 58,032 | 16,406,351 |
| 12/27/2011 | 59,130 | 17,264,310 |
| 12/23/2011 | 55,555 | 17,619,179 |
| 12/22/2011 | 81,136 | 25,499,548 |
| 12/21/2011 | 89,136 | 27,399,180 |
| 12/20/2011 | 90,544 | 28,396,548 |
| 12/19/2011 | 94,519 | 27,453,357 |
| 12/16/2011 | 103,465 | 29,875,882 |
| 12/15/2011 | 93,177 | 29,874,462 |
| 12/14/2011 | 112,543 | 31,630,151 |
| 12/13/2011 | 97,265 | 32,391,605 |
| 12/12/2011 | 89,786 | 28,370,853 |
| 12/09/2011 | 86,860 | 31,712,964 |
| 12/08/2011 | 109,832 | 44,224,415 |
| 12/07/2011 | 99,474 | 38,123,501 |
| 12/06/2011 | 97,149 | 39,017,498 |
| 12/05/2011 | 98,220 | 37,602,552 |
| 12/02/2011 | 94,244 | 35,053,009 |
| 12/01/2011 | 98,940 | 33,216,096 |
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