NYSE:AJG | Historical Stock Price | 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.

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Historical Stock Price — 2025

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volumeOpen priceExchange Volume
2025-12-31$258.79$759.581,018,400
2025-12-30$261.83$768.511,017,100
2025-12-29$263.14$772.351,367,500
2025-12-26$261.48$767.48844,600
2025-12-24$260.77$765.39545,100
2025-12-23$258.70$759.321,153,600
2025-12-22$258.25$758.001,590,300
2025-12-19$253.39$743.733,971,200
2025-12-18$252.64$741.531,262,900
2025-12-17$250.90$736.421,666,200
2025-12-16$251.98$739.592,062,400
2025-12-15$256.19$751.952,328,000
2025-12-12$255.38$749.572,238,600
2025-12-11$247.62$726.802,426,100
2025-12-10$240.45$705.751,745,100
2025-12-09$239.91$704.171,067,000
2025-12-08$237.85$698.121,358,000
2025-12-05$239.71$703.581,771,900
2025-12-04$245.41$718.401,281,700
2025-12-03$245.36$718.261,519,200
2025-12-02$244.22$714.921,691,900
2025-12-01$246.10$720.421,418,400
2025-11-28$247.62$724.87756,600
2025-11-26$248.52$727.511,011,000
2025-11-25$250.24$732.54966,400
2025-11-24$248.21$726.602,094,700
2025-11-21$251.41$735.971,710,200
2025-11-20$247.30$723.941,571,200
2025-11-19$248.72$728.092,191,200
2025-11-18$258.64$757.131,814,900
2025-11-17$259.31$759.092,174,900
2025-11-14$258.51$756.751,828,600
2025-11-13$256.71$751.482,174,300
2025-11-12$255.86$748.991,256,800
2025-11-11$255.00$746.481,338,500
2025-11-10$251.06$734.941,463,100
2025-11-07$250.01$731.871,746,600
2025-11-06$245.24$717.901,456,700
2025-11-05$248.05$726.131,673,100
2025-11-04$251.70$736.822,473,800
2025-11-03$242.98$711.292,586,700
2025-10-31$249.49$730.355,066,700
2025-10-30$262.03$767.062,712,700
2025-10-29$262.02$767.033,165,300
2025-10-28$267.50$783.072,838,800
2025-10-27$279.00$816.73930,300
2025-10-24$280.73$821.801,437,200
2025-10-23$282.49$826.951,086,900
2025-10-22$283.04$828.561,405,900
2025-10-21$279.01$816.761,424,100
2025-10-20$279.26$817.491,171,200
2025-10-17$280.47$821.041,415,300
2025-10-16$280.17$820.162,379,700
2025-10-15$296.16$866.972,451,600
2025-10-14$303.73$889.131,234,600
2025-10-13$298.00$872.351,176,100
2025-10-10$301.74$883.301,184,600
2025-10-09$302.25$884.79761,600
2025-10-08$306.94$898.52636,900
2025-10-07$309.81$906.92863,800
2025-10-06$309.15$904.991,053,600
2025-10-03$310.48$908.89767,200
2025-10-02$308.67$903.591,004,300
2025-10-01$305.84$895.301,864,200
2025-09-30$309.74$906.721,671,300
2025-09-29$305.71$894.921,355,600
2025-09-26$304.15$890.36877,100
2025-09-25$303.08$887.221,366,900
2025-09-24$304.55$891.531,125,500
2025-09-23$304.36$890.971,601,900
2025-09-22$300.06$878.381,446,900
2025-09-19$299.65$877.182,605,300
2025-09-18$296.74$868.661,405,700
2025-09-17$292.66$856.721,248,100
2025-09-16$291.46$853.211,175,600
2025-09-15$289.40$847.181,170,000
2025-09-12$297.28$870.241,302,100
2025-09-11$300.61$879.991,335,100
2025-09-10$293.18$858.241,854,700
2025-09-09$298.50$873.821,119,300
2025-09-08$299.12$875.631,153,100
2025-09-05$299.18$875.811,217,200
2025-09-04$300.22$876.951,282,400
2025-09-03$303.70$887.111,842,600
2025-09-02$302.57$883.811,673,400
2025-08-29$302.75$884.341,472,400
2025-08-28$299.62$875.20769,100
2025-08-27$298.72$872.571,513,500
2025-08-26$300.20$876.892,312,400
2025-08-25$298.62$872.271,020,600
2025-08-22$303.17$885.571,165,400
2025-08-21$305.38$892.021,154,600
2025-08-20$302.64$884.021,568,500
2025-08-19$300.98$879.171,132,000
2025-08-18$294.51$860.271,376,300
2025-08-15$292.72$855.041,238,000
2025-08-14$293.41$857.061,280,200
2025-08-13$295.10$861.991,337,800
2025-08-12$290.65$848.991,275,900
2025-08-11$288.92$843.941,536,900
2025-08-08$289.44$845.461,726,200
2025-08-07$289.99$847.073,116,000
2025-08-06$286.26$836.171,136,200
2025-08-05$285.78$834.771,681,700
2025-08-04$284.61$831.351,776,100
2025-08-01$284.17$830.072,787,800
2025-07-31$287.25$839.062,554,700
2025-07-30$285.84$834.942,920,400
2025-07-29$288.35$842.284,081,200
2025-07-28$309.12$902.951,237,200
2025-07-25$315.14$920.53897,400
2025-07-24$309.06$902.77738,200
2025-07-23$310.79$907.82659,400
2025-07-22$312.41$912.561,107,900
2025-07-21$308.24$900.37772,700
2025-07-18$313.14$914.69691,300
2025-07-17$313.91$916.941,288,100
2025-07-16$309.92$905.281,567,900
2025-07-15$308.06$899.851,010,800
2025-07-14$315.40$921.291,425,500
2025-07-11$311.54$910.01715,200
2025-07-10$313.58$915.97948,800
2025-07-09$315.25$920.851,401,400
2025-07-08$313.76$916.501,110,100
2025-07-07$316.07$923.251,232,200
2025-07-03$318.10$929.18639,900
2025-07-02$315.74$922.281,450,800
2025-07-01$319.49$933.241,567,400
2025-06-30$320.12$935.081,620,100
2025-06-27$317.73$928.105,447,000
2025-06-26$318.39$930.021,397,300
2025-06-25$317.43$927.221,507,300
2025-06-24$325.98$952.191,037,400
2025-06-23$324.12$946.761,311,700
2025-06-20$320.16$935.192,537,100
2025-06-18$317.13$926.341,048,800
2025-06-17$316.13$923.42958,400
2025-06-16$316.33$924.011,294,100
2025-06-13$316.64$924.911,039,000
2025-06-12$320.15$935.161,416,700
2025-06-11$312.94$914.101,428,700
2025-06-10$314.40$918.371,473,100
2025-06-09$317.83$928.391,616,300
2025-06-06$328.76$960.31735,200
2025-06-05$328.10$956.491,851,400
2025-06-04$336.34$980.511,300,200
2025-06-03$345.25$1,006.481,035,800
2025-06-02$348.77$1,016.75986,100
2025-05-30$347.44$1,012.872,545,200
2025-05-29$341.90$996.72628,800
2025-05-28$339.80$990.601,136,700
2025-05-27$342.75$999.20976,400
2025-05-23$338.04$985.46859,400
2025-05-22$335.48$978.00771,700
2025-05-21$337.53$983.98867,100
2025-05-20$340.33$992.14908,800
2025-05-19$343.82$1,002.31610,900
2025-05-16$342.24$997.71973,200
2025-05-15$338.28$986.161,013,200
2025-05-14$329.64$960.98898,500
2025-05-13$332.70$969.901,004,000
2025-05-12$331.28$965.761,672,300
2025-05-09$338.18$985.87576,300
2025-05-08$338.47$986.721,037,200
2025-05-07$339.55$989.871,279,600
2025-05-06$338.27$986.141,402,700
2025-05-05$334.86$976.191,402,800
2025-05-02$331.08$965.171,818,500
2025-05-01$317.64$925.991,995,900
2025-04-30$320.69$934.893,032,400
2025-04-29$317.14$924.542,753,700
2025-04-28$323.81$943.981,536,700
2025-04-25$322.30$939.582,164,300
2025-04-24$331.52$966.46961,100
2025-04-23$331.79$967.24953,600
2025-04-22$330.75$964.211,041,500
2025-04-21$319.40$931.12837,100
2025-04-17$329.22$959.751,195,100
2025-04-16$332.66$969.78879,300
2025-04-15$335.56$978.241,313,800
2025-04-14$342.92$999.691,236,600
2025-04-11$334.02$973.751,179,700
2025-04-10$325.72$949.551,570,200
2025-04-09$323.82$944.012,285,000
2025-04-08$311.53$908.181,812,200
2025-04-07$310.86$906.233,404,100
2025-04-04$319.25$930.692,901,900
2025-04-03$344.40$1,004.011,322,200
2025-04-02$344.07$1,003.041,271,600
2025-04-01$343.86$1,002.43903,800
2025-03-31$345.24$1,006.451,770,700
2025-03-28$340.76$993.391,362,700
2025-03-27$341.00$994.091,330,600
2025-03-26$336.73$981.651,351,200
2025-03-25$337.36$983.481,427,000
2025-03-24$337.67$984.391,226,400
2025-03-21$331.79$967.242,675,700
2025-03-20$334.44$974.971,497,400
2025-03-19$326.64$952.23974,000
2025-03-18$329.66$961.041,422,500
2025-03-17$329.14$959.521,172,000
2025-03-14$325.24$948.151,265,300
2025-03-13$322.85$941.181,151,000
2025-03-12$325.08$947.681,185,100
2025-03-11$325.75$949.641,635,500
2025-03-10$321.85$938.273,180,700
2025-03-07$324.00$944.534,131,400
2025-03-06$339.85$988.851,491,900
2025-03-05$340.79$991.581,216,800
2025-03-04$337.27$981.341,914,700
2025-03-03$341.80$994.521,360,400
2025-02-28$337.74$982.711,745,000
2025-02-27$333.17$969.411,462,500
2025-02-26$328.33$955.33991,800
2025-02-25$331.83$965.511,712,700
2025-02-24$328.49$955.791,465,500
2025-02-21$325.56$947.27952,400
2025-02-20$325.13$946.02876,400
2025-02-19$327.33$952.42709,600
2025-02-18$326.30$949.421,318,500
2025-02-14$321.50$935.452,079,500
2025-02-13$328.56$956.001,210,900
2025-02-12$324.61$944.501,099,500
2025-02-11$322.00$936.911,537,900
2025-02-10$324.29$943.571,573,100
2025-02-07$322.33$937.871,722,100
2025-02-06$319.99$931.061,852,500
2025-02-05$316.30$920.321,481,100
2025-02-04$312.21$908.421,680,500
2025-02-03$309.00$899.082,216,500
2025-01-31$301.82$878.192,411,700
2025-01-30$299.03$870.071,641,600
2025-01-29$294.10$855.731,593,800
2025-01-28$293.41$853.721,781,700
2025-01-27$296.00$861.261,630,400
2025-01-24$289.51$842.372,030,400
2025-01-23$288.00$837.981,565,300
2025-01-22$293.50$853.981,504,700
2025-01-21$296.77$863.501,626,500
2025-01-17$294.82$857.821,261,500
2025-01-16$295.79$860.651,230,500
2025-01-15$290.19$844.351,869,200
2025-01-14$289.11$841.211,284,600
2025-01-13$285.81$831.611,918,400
2025-01-10$287.01$835.103,074,500
2025-01-08$285.50$830.711,853,500
2025-01-07$279.77$814.032,776,800
2025-01-06$276.42$804.291,678,100
2025-01-03$280.40$815.873,729,000
2025-01-02$275.89$802.742,560,700