Brown Brothers Harriman & Co. Increases Stake in Watsco

Investment firm raises holding in construction equipment supplier by 29.3% in Q3

Mar. 14, 2026 at 7:35am

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According to a recent SEC filing, investment management firm Brown Brothers Harriman & Co. increased its stake in Watsco, Inc. (NYSE: WSO), a leading distributor of heating, ventilation, air conditioning, and refrigeration (HVAC/R) equipment, by 29.3% during the third quarter. The firm now owns 199,736 shares, or 0.49% of the company's stock, worth $80.8 million.

Why it matters

Watsco is a major player in the HVAC/R distribution industry, serving both residential and commercial contractors. The increase in Brown Brothers Harriman's stake suggests the firm sees long-term growth potential in the company, which could signal positive market sentiment around Watsco's business outlook.

The details

Brown Brothers Harriman & Co. purchased an additional 45,216 shares of Watsco during the third quarter, bringing its total holding to 199,736 shares. The investment firm now owns 0.49% of Watsco's outstanding stock. Several other institutional investors have also increased their positions in Watsco in recent quarters, including Empowered Funds LLC, Savant Capital LLC, and ProShare Advisors LLC.

  • Brown Brothers Harriman & Co. filed the 13F report disclosing the increased stake on March 14, 2026.
  • The firm raised its Watsco holding during the third quarter of 2025.

The players

Brown Brothers Harriman & Co.

An investment management firm that provides private banking, investment management, and wealth and investment services.

Watsco, Inc.

A leading distributor of heating, ventilation, air conditioning, and refrigeration (HVAC/R) equipment, parts and supplies in the United States.

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The takeaway

The increase in Brown Brothers Harriman's stake in Watsco suggests the investment firm sees strong growth potential in the HVAC/R distribution industry and Watsco's position as a market leader. This could signal positive sentiment around Watsco's business outlook among institutional investors.