SABESP’s shares ended 2005 quoted at R$ 157.00 per one thousand shares. The American Depositary Receipts (ADRs) ended 2005 quoted at US$ 16.87. Along 2005, 13.5 billion SABESP shares have been traded in Bovespa (São Paulo Stock Exchange), representing a daily average volume of R$ 7.8 million. More than 78 thousand deals were made and SABESP shares were present in 100% of the floor sessions. In the New York Stock Exchange, 52.9 million ADRs were traded, equivalent to 13.2 billion SABESP shares, representing a daily average volume of US$ 3.2 million.

During 2005, SABESP took part in several domestic and international events, with emphasis to Brazil Day in the NYSE, aiming at getting the Company closer to its investors and to the financial community and increasing the visibility of its business. Conferences calls after the publication of the quarterly results have been maintained along the year.