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Shares of Arthur J. Gallagher &amp; Co. (AJG) rallied 2.98% to $247.62 Thursday, on what proved to be an all-around positive trading session for the stock market, with the S&amp;P 500 Index  rising 0.21% to 6,901.00 and the Dow Jones Industrial Average  rising 1.34% to 48,704.01.
This was the stock's third consecutive day of gains.
Arthur J. Gallagher &amp; Co. closed 29.50% short of its 52-week high of $351.23, which the company reached on June 3rd.
The stock demonstrated a mixed performance when compared to some of its competitors Thursday, as Marsh &amp; McLennan Cos. (MMC) rose 1.40% to $183.47, MetLife Inc. (MET) rose 3.04% to $82.25, and AFLAC Inc. (AFL) rose 1.55% to $108.85.
Trading volume (2.4 M) eclipsed its 50-day average volume of 1.6 M.
Data source: Dow Jones Market Data, FactSet. Data compiled December 11, 2025.
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(END) Dow Jones Newswires
12-11-25 1646ET

<p>Arthur J. Gallagher & Co. stock rose 2.98% to $247.62, outperforming competitors in a positive trading session. The S&P 500 increased by 0.21% and the Dow Jones by 1.34%. This marks the third consecutive day of gains for AJG, which is 29.50% below its 52-week high. Trading volume was 2.4M, above the 50-day average of 1.6M.</p>

Arthur J. Gallagher & Co. Stock Outperforms Competitors On Strong Trading Day