Arthur J. Gallagher & Co. (AJG) closed at $268.04 on October 23, 2026, down 1.1% from the previous close, on volume of 1,767,304 shares (30-day average 1,365,194).
Data as of October 23, 2026.
Arthur J. Gallagher acquires Mund Group to expand Texas operations
Seeking Alpha News (Wed, 21-Oct 9:10 AM ET)
Arthur J. Gallagher & Co. Acquires The Mund Group, Ltd.
PRNewswire (Wed, 21-Oct 9:00 AM ET)
Arthur J. Gallagher buys Intelligent Communications Experiences
Seeking Alpha News (Mon, 19-Oct 9:16 AM ET)
Arthur J. Gallagher & Co. Acquires Intelligent Communications Experiences
PRNewswire (Mon, 19-Oct 9:01 AM ET)
Employers Shift Focus from Retirement Access to Financial Outcomes
PRNewswire (Wed, 14-Oct 9:02 AM ET)
Arthur J. Gallagher & Co. Announces Third Quarter 2026 Earnings Release And Conference Call Date
PRNewswire (Thu, 8-Oct 4:16 PM ET)
Arthur J. Gallagher & Co. Acquires Ornella Underwriting Limited
PRNewswire (Wed, 7-Oct 10:01 AM ET)
Arthur J. Gallagher & Co. Acquires Winter & Co Solicitors LLP
PRNewswire (Tue, 6-Oct 3:00 AM ET)
Arthur J. Gallagher & Co. Acquires Albany Insurance Services Limited
PRNewswire (Thu, 1-Oct 9:02 AM ET)
Arthur J. Gallagher & Co. Acquires Innovise Business Consultants
PRNewswire (Tue, 15-Sep 9:01 AM ET)
Founded in 1927 as a one-person agency, Gallagher's primary business is insurance brokerage, with a focus on serving middle-market companies. The company's risk management segment provides third-party claims adjustment to companies that choose to self-insure. Gallagher has about 72,000 employees and generates about a third of its revenue internationally, primarily in Australia, Canada, New Zealand, and the UK.
Arthur J. Gallagher & Co. trades on the NYSE stock market under the symbol AJG.
As of October 23, 2026, AJG stock price declined to $268.04 with 1,767,304 million shares trading.
AJG has a beta of -0.01, meaning it tends to be less sensitive to market movements. AJG has a correlation of 0.00 to the broad based SPY ETF.
AJG has a market cap of $68.91 billion. This is considered a Large Cap stock.
Last quarter Arthur J. Gallagher & Co. reported $4 billion in Revenue and $2.84 earnings per share. This fell short of revenue expectation by $-22 million and exceeded earnings estimates by $.01.
In the last 3 years, AJG traded as high as $351.23 and as low as $190.75.
The top ETF exchange traded funds that AJG belongs to (by Net Assets): VTI, VOO, VO, IVV, SPY.
AJG has underperformed the market in the last year with a return of -4.3%, while SPY returned +14.9%. This shows that you would have done better investing in the overall market (through SPY) over the last year than in AJG shares. However, AJG has outperformed the market in the last 3 month and 2 week periods, returning +10.8% and +14.5%, while SPY returned +1.9% and -1.8%, respectively. This indicates AJG has been having a stronger performance recently.
AJG support price is $265.84 and resistance is $276.12 (based on 1 day standard deviation move). This means that using the most recent 20 day stock volatility and applying a one standard deviation move around the stock's closing price, stastically there is a 67% probability that AJG shares will trade within this expected range on the day.
