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Rolling Meadows Today
By the People, for the People
Arthur J. Gallagher & Co. Shares Sold by William Blair Investment Management
Investment firm reduces stake in financial services provider
Published on Mar. 4, 2026
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William Blair Investment Management LLC trimmed its position in shares of Arthur J. Gallagher & Co. (NYSE:AJG) by 59.5% during the third quarter, according to the company's recent Form 13F filing with the Securities & Exchange Commission. The firm owned 13,511 shares of the financial services provider's stock after selling 19,874 shares during the quarter.
Why it matters
This filing provides insight into the investment activity of William Blair Investment Management, a major institutional investor, and their view on the prospects of Arthur J. Gallagher & Co., a leading insurance brokerage and risk management firm.
The details
According to the 13F filing, William Blair Investment Management reduced its stake in Arthur J. Gallagher & Co. by nearly 60% in the third quarter, selling 19,874 shares. The firm now holds 13,511 shares of the financial services provider, valued at $4,185,000 at the end of the quarter.
- William Blair Investment Management filed the 13F report for the third quarter of the year.
The players
William Blair Investment Management LLC
An investment management firm that has reduced its stake in Arthur J. Gallagher & Co.
Arthur J. Gallagher & Co.
A global insurance brokerage and risk management firm headquartered in Rolling Meadows, Illinois.
The takeaway
The reduced stake by a major investor like William Blair Investment Management could signal a shift in sentiment around Arthur J. Gallagher & Co., though more context would be needed to fully understand the rationale behind the portfolio adjustment.
