| Date | Open | Close | Volume |
| 2010-03-03 | 14.26 | 14.17 | 1361300 |
| 2010-03-02 | 14.51 | 14.23 | 2484200 |
| 2010-03-01 | 14.65 | 14.44 | 768600 |
| 2010-02-26 | 14.45 | 14.56 | 748900 |
| 2010-02-25 | 14.24 | 14.43 | 815300 |
| 2010-02-24 | 14.63 | 14.40 | 2073800 |
| 2010-02-23 | 15.30 | 14.65 | 1422700 |
| 2010-02-22 | 15.17 | 15.28 | 892000 |
| 2010-02-19 | 14.81 | 15.13 | 770500 |
| 2010-02-18 | 15.22 | 14.81 | 861200 |
| 2010-02-17 | 15.98 | 15.27 | 1051900 |
| 2010-02-16 | 15.95 | 15.97 | 575400 |
| 2010-02-12 | 15.43 | 15.79 | 1206600 |
| 2010-02-11 | 14.67 | 15.62 | 1164900 |
| 2010-02-10 | 14.60 | 14.67 | 639500 |
| 2010-02-09 | 14.43 | 14.59 | 734400 |
| 2010-02-08 | 14.43 | 14.22 | 661200 |
| 2010-02-05 | 14.05 | 14.53 | 1141700 |
| 2010-02-04 | 14.58 | 14.01 | 856000 |
| 2010-02-03 | 14.67 | 14.68 | 615800 |
| 2010-02-02 | 14.95 | 14.77 | 683500 |
| 2010-02-01 | 14.77 | 14.97 | 678500 |
| 2010-01-29 | 14.92 | 14.67 | 1095300 |
| 2010-01-28 | 15.11 | 14.82 | 1005200 |
| 2010-01-27 | 15.33 | 15.11 | 657600 |
| 2010-01-26 | 15.01 | 15.34 | 1646000 |
| 2010-01-25 | 15.27 | 15.14 | 864400 |
| 2010-01-22 | 16.00 | 15.14 | 1129000 |
| 2010-01-21 | 16.66 | 16.10 | 856900 |
| 2010-01-20 | 16.38 | 16.56 | 426700 |
| 2010-01-19 | 16.43 | 16.47 | 558400 |
| 2010-01-15 | 16.65 | 16.43 | 646600 |
Other Companies: 01-21-2009-1 | Micromet, Inc. | 08-10-2008-1
Companhia de Saneamento Basico do Estado de Sao Paulo | 04-02-2008-1 | JPMorgan Chase & Co.