AJG Stock Summary and Trading Ideas (Arthur J. Gallagher & Co. | NYSE:AJG)

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 August 18, 2026, AJG stock price climbed to $248.36 with 1,191,419 million shares trading.

AJG has a beta of 0.29, meaning it tends to be less sensitive to market movements. AJG has a correlation of 0.01 to the broad based SPY ETF.

AJG has a market cap of $63.85 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 price return of -14.2% while the SPY ETF gained +20.4%. However, in the short term, AJG had mixed performance relative to the market. It has outperformed in the last 3 months, returning +24.6% vs +4.1% return in SPY. But in the last 2 weeks, AJG shares have been beat by the market, returning +0.2% compared to an SPY return of +1.3%.

AJG support price is $243.00 and resistance is $252.94 (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.