| Brazilian Telecommunications Corp. | |||
| 2010-12-23 | 6.44 | 6.48 | 7300 |
| 2010-12-22 | 6.42 | 6.47 | 6900 |
| 2010-12-21 | 6.19 | 6.35 | 3000 |
| 2010-12-20 | 6.23 | 6.29 | 2800 |
| 2010-12-17 | 6.15 | 6.31 | 6100 |
| 2010-12-16 | 6.33 | 6.27 | 1900 |
| 2010-12-15 | 6.27 | 6.33 | 8900 |
| 2010-12-14 | 6.50 | 6.41 | 5000 |
| 2010-12-13 | 6.24 | 6.37 | 18800 |
| 2010-12-10 | 6.25 | 6.23 | 3100 |
| 2010-12-09 | 6.27 | 6.29 | 1200 |
| 2010-12-08 | 6.30 | 6.27 | 1200 |
| 2010-12-07 | 6.38 | 6.30 | 1300 |
| 2010-12-06 | 6.30 | 6.32 | 7100 |
| 2010-12-03 | 6.26 | 6.30 | 4000 |
| 2010-12-02 | 6.40 | 6.26 | 6100 |
| 2010-12-01 | 5.58 | 6.21 | 15400 |
| 2010-11-30 | 6.13 | 6.05 | 1700 |
| 2010-11-29 | 6.15 | 6.10 | 2900 |
| 2010-11-26 | 6.24 | 6.24 | 2000 |
| 2010-11-24 | 6.05 | 6.24 | 5300 |
| 2010-11-23 | 6.22 | 6.03 | 9200 |
| 2010-11-22 | 6.27 | 6.25 | 5100 |
| 2010-11-19 | 6.31 | 6.40 | 8500 |
| 2010-11-18 | 6.25 | 6.37 | 2100 |
| 2010-11-17 | 6.25 | 6.24 | 800 |
| 2010-11-16 | 6.23 | 6.20 | 7600 |
| 2010-11-15 | 6.36 | 6.37 | 8800 |
| 2010-11-12 | 6.46 | 6.31 | 8600 |
| 2010-11-11 | 6.29 | 6.43 | 1400 |
| 2010-11-10 | 6.39 | 6.41 | 4300 |
| 2010-11-09 | 6.31 | 6.29 | 3400 |
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