Arthur J. Gallagher & Co. (AJG) Stock Chart & Stock Price History $313.85 -2.22 (-0.70%) Closing price 03:59 PM EasternExtended Trading$314.18 +0.32 (+0.10%) As of 05:56 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 The Arthur J. Gallagher & Co. (AJG) stock chart highlights key performance trends across multiple timeframes. Over the last 12 months, the stock's price has increased 18.61%, with a year-to-date return of 10.57%. In the past month, the stock has decreased 4.58%, reflecting recent market activity. As of the latest close, Arthur J. Gallagher & Co. traded at $315.76 with a market cap of $80.87 billion and volume of 1.23 million shares. Five years ago, the stock traded at $98.37, representing a 219.05% increase over that period. At the time, it had a market cap of $18.52 billion and a volume of 727,869 shares. 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 5 Day Performance-0.84%1 Month Performance-4.58%3 Month Performance+1.02%Year-To-Date Performance+10.57%1 Year Performance+18.61%5 Year Performance+219.05% AJG Stock Chart for Tuesday, July, 8, 2025 AJG Chart by TradingView Arthur J. Gallagher & Co. Stock Price History Daily Weekly Monthly Yearly Time Frame Custom Range 1 Month 3 Months 6 Months Year-to-Date 1 Year 3 Year 5 Year Time Frame Start Date End Date Export to Excel DateOpening PriceClosing PriceHighLowVolumeMarket Capitalization07/07/2025$316.50$315.76-0.23%$318.34$313.901.23 million shs$80.87 billion07/04/2025$316.50$316.50$319.25$315.23639,946 shs$81.06 billion07/03/2025$315.55$316.50+0.30%$319.25$315.23639,946 shs$81.06 billion07/02/2025$319.67$315.55-1.29%$320.00$309.391.45 million shs$80.81 billion07/01/2025$320.23$319.67-0.17%$323.25$316.221.57 million shs$81.87 billion06/30/2025$317.70$320.23+0.80%$321.07$314.501.62 million shs$82.01 billion06/27/2025$318.76$317.70-0.33%$320.57$315.005.45 million shs$81.36 billion06/26/2025$317.49$318.76+0.40%$319.79$315.391.40 million shs$81.63 billion06/25/2025$326.18$317.49-2.66%$325.50$316.831.51 million shs$81.31 billion06/24/2025$324.31$326.18+0.58%$327.34$318.651.03 million shs$83.53 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. 06/23/2025$320.84$324.31+1.08%$324.53$319.841.31 million shs$83.06 billion06/20/2025$317.20$320.84+1.15%$322.92$318.182.54 million shs$82.17 billion06/19/2025$317.20$317.20$319.41$314.711.05 million shs$81.24 billion06/18/2025$316.07$317.20+0.36%$319.41$314.711.05 million shs$81.24 billion06/17/2025$316.29$316.07-0.07%$318.16$313.23958,419 shs$80.95 billion06/16/2025$316.38$316.29-0.03%$319.30$315.601.29 million shs$81.00 billion06/13/2025$320.17$316.38-1.18%$320.74$316.171.04 million shs$81.02 billion06/12/2025$312.96$320.17+2.30%$320.71$312.381.42 million shs$82.00 billion06/11/2025$314.29$312.96-0.42%$315.40$308.981.43 million shs$80.15 billion06/10/2025$317.88$314.29-1.13%$321.24$312.301.47 million shs$80.49 billion06/09/2025$328.90$317.88-3.35%$327.83$312.181.62 million shs$81.41 billion Related Companies ERIE Stock Chart WTW Stock Chart AON Stock Chart BRO Stock Chart CB Stock Chart L Stock Chart MMC Stock Chart RYAN Stock Chart CRD.B Stock Chart EHTH 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 7/8/2025 by MarketBeat.com Staff From Our PartnersMarket Panic: Trump Just Dropped a Bomb on Your Stockstock Market Panic: Trump Just Dropped a Bomb on Your Stocks The market is in freefall—and Trump's new tarif...American Alternative | SponsoredThis Signal Only Flashes Once Every 4 Years – And It Just TriggeredThis same signal has appeared twice before in the past 8 years — both times, it kicked off major moves in cryp...Crypto Swap Profits | SponsoredINVESTOR ALERT: Tiny “$3 AI Wonder Stock” on the Verge of Blasting OffRight now, we’re witnessing a monumental shift in the world.Traders Agency | SponsoredTrump’s biggest move, misreportedThe media and financial pundits are all misreading Trump’s actions. They think Trump wants to make Canada t...Porter & Company | SponsoredEveryone’s watching Nvidia right now. 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