Arthur J. Gallagher & Co. (AJG) Stock Chart & Stock Price History $341.78 +5.05 (+1.50%) Closing price 03/27/2025 03:59 PM EasternExtended Trading$341.05 -0.72 (-0.21%) As of 03/27/2025 07:59 PM Eastern Extended trading is trading that happens on electronic markets outside of regular trading hours. This is a fair market value extended hours price provided by Polygon.io. Learn more. Add Compare Share Share Chart Stock AnalysisAnalyst ForecastsChartCompetitorsDividendEarningsFinancialsHeadlinesInsider TradesOptions ChainOwnershipSEC FilingsShort InterestSustainabilityTrendsBuy This Stock Arthur J. Gallagher & Co. Stock Price Performance 5 Day Performance+2.94%1 Month Performance+1.23%3 Month Performance+19.28%6 Month Performance+22.30%Year-To-Date Performance+20.41%1 Year Performance+36.68% Receive AJG Stock News and Ratings via EmailSign-up to receive the latest news and ratings for Arthur J. Gallagher & Co. and its competitors with MarketBeat's FREE daily newsletter. Email Address AJG Stock Chart for Friday, March, 28, 2025 AJG Chart by TradingViewRemove Ads Arthur J. Gallagher & Co. Stock Price History Daily Weekly Monthly Time Frame Custom Range 1 Month 3 Months 6 Months Year-to-Date 1 Year Time Frame * Start Date * End Date Export to Excel DateOpening PriceClosing PriceHighLowVolumeMarket Capitalization03/27/2025$336.56$341.78+1.55%$341.89$335.251.33 million shs$87.40 billion03/26/2025$337.55$336.56-0.29%$340.11$336.101.35 million shs$85.72 billion03/25/2025$338.10$337.55-0.16%$338.81$333.201.43 million shs$85.97 billion03/24/2025$332.02$338.10+1.83%$339.52$332.081.23 million shs$86.11 billion03/21/2025$334.85$332.02-0.84%$335.07$330.062.68 million shs$84.57 billion03/20/2025$326.50$334.85+2.56%$335.66$326.341.50 million shs$85.29 billion03/19/2025$329.76$326.50-0.99%$330.40$323.82974,047 shs$83.16 billion03/18/2025$329.32$329.76+0.13%$333.00$328.461.42 million shs$83.99 billion03/17/2025$325.35$329.32+1.22%$329.64$322.001.17 million shs$83.88 billion03/14/2025$322.89$325.35+0.76%$325.77$321.761.27 million shs$82.87 billion Get the Latest News and Ratings for AJG and Related StocksEnter your email address below to receive the latest news and analysts' ratings for Arthur J. Gallagher & Co. and its competitors with MarketBeat's FREE daily newsletter. 03/13/2025$325.50$322.89-0.80%$327.11$322.411.15 million shs$82.24 billion03/12/2025$326.26$325.50-0.23%$327.63$320.671.19 million shs$82.90 billion03/11/2025$321.71$326.26+1.41%$327.88$321.881.64 million shs$83.10 billion03/10/2025$323.81$321.71-0.65%$324.40$318.243.18 million shs$81.94 billion03/07/2025$340.18$323.81-4.81%$339.48$321.194.13 million shs$82.47 billion03/06/2025$341.00$340.18-0.24%$342.01$334.701.49 million shs$86.64 billion03/05/2025$337.27$341.00+1.11%$342.04$335.611.22 million shs$86.85 billion03/04/2025$341.70$337.27-1.30%$345.43$336.481.91 million shs$85.90 billion03/03/2025$337.61$341.70+1.21%$343.21$336.381.36 million shs$87.03 billion02/28/2025$333.19$337.61+1.33%$338.43$332.781.74 million shs$85.99 billion02/27/2025$327.70$333.19+1.68%$334.69$326.931.46 million shs$84.86 billion Related Companies MMC Stock Chart AON Stock Chart BRO Stock Chart EHTH Stock Chart WTW Stock Chart ERIE Stock Chart RYAN Stock Chart EQH Stock Chart CRVL Stock Chart BWIN Stock Chart Receive AJG Stock News and Ratings via EmailSign-up to receive the latest news and ratings for Arthur J. Gallagher & Co. and its competitors with MarketBeat's FREE daily newsletter. This page (NYSE:AJG) was last updated on 3/28/2025 by MarketBeat.com Staff From Our PartnersElon Warns: Exec Order 14024 Targets DollarExecutive Order 14024 is paving the way for irreversible damage to the dollar's value—threatening your wealth,...Priority Gold | SponsoredNew “Trump” currency proposed in DCAccording to one of the most connected men in Washington… A surprising new bill was just introduced in Wash...Paradigm Press | SponsoredWarning: “DOGE Collapse” imminentElon Strikes Back You may already sense that the tide is turning against Elon Musk and DOGE. Just this week...Altimetry | SponsoredElon Musk is helping print “new gold”MIT scientists just developed a brand-new metal… A metal that’s shaping up to be, not only the biggest brea...True Market Insiders | SponsoredURGENT: Someone's Moving Gold Out of London...People who don’t understand the gold market are about to lose a lot of money. 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