NYSE:AJG | Stock Price History | Arthur J. Gallagher & Co.

Complete retained daily price history on its own workbook tab. Split-adjusted close keeps every historical share price on one comparable split basis. Cumulative dividend-reinvested close is the daily close of a rebased total-return index: it starts with one share at the earliest retained close, reinvests every distribution, and normalizes every forward and reverse split exactly once. Admitted exchange opening prices remain a distinct current-session series.

Available history
1984-06-20 to 2026-09-04
Data captured

Stock Price Chart

Blue: Split-adjusted close · Orange: Cumulative dividend-reinvested close

$1.72$6.20$22.31$80.29$288.98$1,040.131984-06-202026-08-27

Logarithmic scale. Both lines share the same starting value for the selected range.

Historical Stock Price

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volumeOpen priceExchange Volume
2026-09-04$265.8547,556
2026-09-03$266.2993,272
2026-09-02$262.5095,109
2026-09-01$263.53102,371
2026-08-31$266.5377,551
2026-08-28$263.1896,342
2026-08-27$260.15$768.46977,400$261.0861,355
2026-08-26$265.03$782.871,426,200$265.4490,170
2026-08-25$268.51$793.151,752,800$269.3873,019
2026-08-24$271.99$803.431,531,400$264.6474,675
2026-08-21$263.81$779.271,154,600$259.6157,613
2026-08-20$259.61$766.861,340,700$257.9455,004
2026-08-19$257.45$760.481,553,400$250.3469,073
2026-08-18$248.36$733.631,287,000$250.2168,773
2026-08-17$247.97$732.48853,800$249.4640,493
2026-08-14$251.21$742.05895,800$255.0149,741
2026-08-13$253.49$748.791,011,600$257.2263,149
2026-08-12$255.46$754.601,475,000$250.9984,478
2026-08-11$253.51$748.841,648,700$250.4074,676
2026-08-10$252.43$745.651,280,100$247.0258,619
2026-08-07$248.12$732.921,128,700$250.2077,739
2026-08-06$251.74$743.621,287,600$251.6268,710
2026-08-05$251.03$741.52956,400$250.0039,029
2026-08-04$248.06$732.751,419,500$244.9083,999
2026-08-03$247.79$731.951,581,800$252.1884,818
2026-07-31$249.42$736.761,736,300$249.1080,690
2026-07-30$256.46$757.561,926,400$263.3990,382
2026-07-29$268.91$794.331,573,600$262.4388,018
2026-07-28$265.31$783.701,533,700$257.40109,217
2026-07-27$253.36$748.401,110,000$248.1456,351
2026-07-24$247.77$731.891,259,400$242.0056,910
2026-07-23$242.21$715.471,345,100$242.8169,361
2026-07-22$242.50$716.32974,000$247.8653,436
2026-07-21$248.22$733.221,046,900$251.0955,258
2026-07-20$253.66$749.29976,100$251.6552,192
2026-07-17$253.90$750.001,530,700
2026-07-16$255.93$755.991,443,500
2026-07-15$247.77$731.891,851,800
2026-07-14$253.83$749.791,369,100
2026-07-13$261.23$771.651,337,200
2026-07-10$253.09$747.601,033,000
2026-07-09$253.76$749.581,473,400
2026-07-08$256.61$758.001,942,500
2026-07-07$254.67$752.271,887,100
2026-07-06$249.77$737.801,868,700
2026-07-02$252.44$745.682,741,400
2026-07-01$239.67$707.963,061,500
2026-06-30$229.57$678.131,651,700
2026-06-29$227.12$670.891,542,600
2026-06-26$226.01$667.612,225,600
2026-06-25$217.86$643.541,406,100
2026-06-24$220.76$652.103,195,800
2026-06-23$215.78$637.392,312,700
2026-06-22$209.08$617.602,128,800
2026-06-18$214.06$632.312,848,400
2026-06-17$216.09$638.311,614,600
2026-06-16$215.90$637.751,372,700
2026-06-15$215.74$637.281,544,700
2026-06-12$218.69$645.991,790,800
2026-06-11$220.90$652.522,479,300
2026-06-10$220.14$650.272,026,700
2026-06-09$217.05$641.141,950,600
2026-06-08$212.52$627.761,902,100
2026-06-05$216.14$638.461,462,900
2026-06-04$211.00$621.211,694,100
2026-06-03$202.50$596.181,999,500
2026-06-02$205.77$605.811,504,400
2026-06-01$206.10$606.781,416,000
2026-05-29$201.11$592.091,788,100
2026-05-28$202.65$596.621,139,900
2026-05-27$202.85$597.211,596,900
2026-05-26$203.96$600.482,265,800
2026-05-22$204.75$602.811,240,300
2026-05-21$207.41$610.641,351,700
2026-05-20$203.61$599.451,470,500
2026-05-19$203.45$598.981,961,800
2026-05-18$207.15$609.871,614,000
2026-05-15$199.95$588.672,388,400
2026-05-14$197.68$581.993,020,100
2026-05-13$192.00$565.272,543,300
2026-05-12$197.40$581.172,051,200
2026-05-11$198.57$584.611,809,600
2026-05-08$198.87$585.491,596,700
2026-05-07$201.94$594.533,218,100
2026-05-06$196.91$579.722,243,900
2026-05-05$205.80$605.901,290,900
2026-05-04$207.03$609.521,213,500
2026-05-01$208.11$612.702,392,400
2026-04-30$206.40$607.663,093,700
2026-04-29$211.81$623.591,288,200
2026-04-28$213.42$628.331,367,600
2026-04-27$215.06$633.161,343,500
2026-04-24$215.38$634.101,228,500
2026-04-23$219.37$645.85995,300
2026-04-22$221.11$650.971,309,400
2026-04-21$224.46$660.831,550,500
2026-04-20$223.07$656.741,307,900
2026-04-17$221.61$652.441,851,000
2026-04-16$224.08$659.711,574,500
2026-04-15$223.17$657.041,221,300