Boston Firm Buys $5.1M Stake in Brazilian Utility Sabesp

Boston Common Asset Management LLC adds 216,467 shares of Companhia de saneamento Basico Do Estado De Sao Paulo - Sabesp to its portfolio.

Mar. 31, 2026 at 8:36am

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Boston Common Asset Management LLC purchased a new stake of 216,467 shares in Companhia de saneamento Basico Do Estado De Sao Paulo - Sabesp (NYSE:SBS), a major Brazilian water and sewage utility company, in the fourth quarter of 2025. The $5.1 million investment represents a new position for the Boston-based asset management firm.

Why it matters

Sabesp is one of the largest water and sewage companies in Latin America, serving over 28 million customers in the state of São Paulo. The investment by Boston Common Asset Management reflects growing interest from U.S. institutional investors in Brazilian infrastructure and utility plays, as the country works to modernize and expand its water and sanitation systems.

The details

According to a recent SEC filing, Boston Common Asset Management purchased the 216,467 shares of Sabesp in the fourth quarter of 2025. The firm cited the company's strong market position, growth potential, and attractive valuation as reasons for the investment. Sabesp's shares have risen over 40% in the past year as the utility has reported improved financial results and expanded its service area.

  • Boston Common Asset Management purchased the Sabesp shares in Q4 2025.
  • Sabesp's shares have risen over 40% in the past year.

The players

Boston Common Asset Management LLC

A Boston-based asset management firm that focuses on sustainable and responsible investing.

Companhia de saneamento Basico Do Estado De Sao Paulo - Sabesp

A major Brazilian water and sewage utility company that serves over 28 million customers in the state of São Paulo.

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The takeaway

This investment highlights the growing interest from U.S. institutional investors in Brazilian infrastructure and utility companies as the country works to modernize its water and sanitation systems. Sabesp's position as a market leader in a rapidly developing sector makes it an attractive target for global asset managers seeking exposure to emerging market growth.