Blair William & Co. IL Increases Stake in Southern Company

The investment firm raised its holdings in the utilities provider by over 21% in the third quarter.

Published on Mar. 10, 2026

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According to a recent SEC filing, Blair William & Co. IL increased its stake in Southern Company (NYSE: SO) by 21.3% during the third quarter. The firm now owns 124,453 shares of the utilities provider's stock, valued at $11.8 million.

Why it matters

This investment move by a major institutional investor signals confidence in Southern Company's performance and growth potential. As one of the largest electric and gas utility companies in the U.S., Southern's stock is closely watched by analysts and investors.

The details

Blair William & Co. IL, an investment management firm, reported acquiring an additional 21,857 shares of Southern Company during the third quarter. This increased the firm's total holdings in the utility company to 124,453 shares. Southern Company operates electric and gas utilities across the southeastern United States, serving residential, commercial, and industrial customers.

  • The SEC filing detailing the increased stake was made on March 10, 2026.
  • The share acquisition occurred during the third quarter of the previous year.

The players

Blair William & Co. IL

An investment management firm that has increased its stake in Southern Company.

Southern Company

A major electric and gas utility company serving the southeastern United States.

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The takeaway

This investment move by a prominent institutional investor suggests confidence in Southern Company's ability to continue delivering value to shareholders. As a leading utility provider, Southern's performance is closely watched by the market.