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 — 2005

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volumeOpen priceExchange Volume
2005-12-30$30.88$49.82192,700
2005-12-29$30.95$49.94202,500
2005-12-28$30.95$49.94276,900
2005-12-27$31.42$50.24181,700
2005-12-23$31.77$50.80222,800
2005-12-22$31.22$49.92257,100
2005-12-21$31.22$49.92273,900
2005-12-20$31.29$50.04334,000
2005-12-19$31.13$49.78392,800
2005-12-16$31.20$49.89612,600
2005-12-15$31.10$49.73487,800
2005-12-14$31.21$49.91373,800
2005-12-13$30.83$49.30292,300
2005-12-12$30.55$48.85216,400
2005-12-09$30.61$48.95210,100
2005-12-08$30.33$48.50283,800
2005-12-07$30.38$48.58601,900
2005-12-06$30.46$48.71246,000
2005-12-05$30.44$48.68344,600
2005-12-02$30.68$49.06216,700
2005-12-01$30.70$49.09202,900
2005-11-30$30.45$48.69185,600
2005-11-29$30.70$49.09226,000
2005-11-28$30.52$48.80263,700
2005-11-25$30.83$49.3083,800
2005-11-23$30.94$49.48257,900
2005-11-22$30.43$48.66264,200
2005-11-21$30.42$48.64244,100
2005-11-18$30.42$48.64200,200
2005-11-17$30.17$48.25206,600
2005-11-16$30.03$48.02160,400
2005-11-15$30.17$48.25375,800
2005-11-14$30.25$48.37493,200
2005-11-11$29.87$47.77229,800
2005-11-10$29.49$47.16409,700
2005-11-09$29.50$47.17348,000
2005-11-08$29.40$47.01256,800
2005-11-07$29.48$47.14236,900
2005-11-04$29.38$46.98347,400
2005-11-03$29.33$46.90378,800
2005-11-02$29.69$47.48298,000
2005-11-01$29.38$46.98244,400
2005-10-31$29.42$47.05611,700
2005-10-28$29.42$47.05321,200
2005-10-27$29.00$46.37342,500
2005-10-26$29.09$46.52676,300
2005-10-25$29.79$47.64551,900
2005-10-24$29.65$47.41349,500
2005-10-21$29.48$47.14433,300
2005-10-20$29.46$47.11404,600
2005-10-19$29.39$47.00263,300
2005-10-18$28.96$46.31479,900
2005-10-17$29.01$46.39624,700
2005-10-14$28.89$46.20472,400
2005-10-13$28.50$45.57420,900
2005-10-12$28.38$45.38642,900
2005-10-11$28.94$46.28526,100
2005-10-10$29.02$46.41481,300
2005-10-07$29.05$46.45394,900
2005-10-06$29.12$46.57909,600
2005-10-05$29.10$46.53676,900
2005-10-04$29.07$46.49454,100
2005-10-03$28.96$46.31401,300
2005-09-30$28.81$46.07590,600
2005-09-29$29.49$47.16489,400
2005-09-28$28.75$45.97654,300
2005-09-27$29.55$46.81366,600
2005-09-26$29.72$47.08878,000
2005-09-23$29.62$46.92564,500
2005-09-22$29.61$46.90645,100
2005-09-21$29.36$46.50529,800
2005-09-20$29.30$46.41851,400
2005-09-19$28.90$45.78489,100
2005-09-16$28.79$45.60668,600
2005-09-15$28.55$45.22597,200
2005-09-14$28.41$45.00282,700
2005-09-13$28.69$45.44478,500
2005-09-12$28.96$45.87581,500
2005-09-09$29.00$45.931,042,300
2005-09-08$28.65$45.38816,900
2005-09-07$29.14$46.16966,300
2005-09-06$29.30$46.41571,600
2005-09-02$28.91$45.79348,700
2005-09-01$29.01$45.95898,200
2005-08-31$28.56$45.24982,500
2005-08-30$27.83$44.08386,700
2005-08-29$28.01$44.37586,200
2005-08-26$27.40$43.40301,300
2005-08-25$27.53$43.61305,500
2005-08-24$27.53$43.61550,300
2005-08-23$27.33$43.29238,500
2005-08-22$27.36$43.34405,000
2005-08-19$27.49$43.54515,700
2005-08-18$27.08$42.89346,900
2005-08-17$27.33$43.29473,000
2005-08-16$27.12$42.96691,900
2005-08-15$26.93$42.66285,300
2005-08-12$27.00$42.77318,300
2005-08-11$26.95$42.69278,100
2005-08-10$26.80$42.45356,600
2005-08-09$26.83$42.50340,000
2005-08-08$26.84$42.51327,400
2005-08-05$27.04$42.83290,600
2005-08-04$27.09$42.91362,900
2005-08-03$27.52$43.59481,000
2005-08-02$27.46$43.50360,700
2005-08-01$27.70$43.88941,200
2005-07-29$27.89$44.18788,200
2005-07-28$27.67$43.83886,900
2005-07-27$27.33$43.291,021,600
2005-07-26$26.60$42.13866,800
2005-07-25$26.89$42.59517,600
2005-07-22$27.27$43.19339,200
2005-07-21$27.25$43.16368,000
2005-07-20$27.20$43.08290,400
2005-07-19$27.26$43.18368,300
2005-07-18$27.15$43.00534,500
2005-07-15$27.02$42.80270,100
2005-07-14$27.15$43.00426,200
2005-07-13$27.20$43.08293,500
2005-07-12$27.50$43.56611,800
2005-07-11$27.66$43.81419,100
2005-07-08$27.51$43.57368,400
2005-07-07$27.52$43.59477,300
2005-07-06$27.42$43.43455,100
2005-07-05$27.43$43.45418,100
2005-07-01$27.21$43.10508,500
2005-06-30$27.13$42.97609,500
2005-06-29$26.73$42.34367,900
2005-06-28$26.67$42.24734,700
2005-06-27$26.84$42.07351,900
2005-06-24$26.50$41.54452,200
2005-06-23$26.81$42.02735,200
2005-06-22$27.37$42.90405,600
2005-06-21$27.30$42.79469,000
2005-06-20$27.44$43.01409,600
2005-06-17$27.93$43.78576,700
2005-06-16$27.80$43.57365,800
2005-06-15$27.30$42.79417,800
2005-06-14$27.50$43.10431,000
2005-06-13$27.10$42.48244,300
2005-06-10$27.16$42.57383,500
2005-06-09$26.99$42.30869,900
2005-06-08$26.93$42.21722,900
2005-06-07$27.18$42.60577,800
2005-06-06$27.49$43.09389,900
2005-06-03$27.49$43.09357,500
2005-06-02$27.45$43.03371,500
2005-06-01$27.90$43.73361,900
2005-05-31$27.62$43.29476,700
2005-05-27$27.74$43.48445,000
2005-05-26$27.59$43.25423,900
2005-05-25$27.43$42.99496,100
2005-05-24$27.48$43.07649,300
2005-05-23$27.57$43.21473,900
2005-05-20$27.86$43.67326,300
2005-05-19$27.93$43.78305,500
2005-05-18$27.73$43.46637,400
2005-05-17$27.10$42.48361,500
2005-05-16$27.16$42.57397,700
2005-05-13$27.06$42.41262,900
2005-05-12$27.12$42.51492,500
2005-05-11$27.62$43.29316,100
2005-05-10$27.50$43.10607,500
2005-05-09$27.85$43.65295,700
2005-05-06$27.99$43.87279,800
2005-05-05$28.07$44.00594,500
2005-05-04$28.32$44.39564,100
2005-05-03$28.02$43.92307,800
2005-05-02$27.90$43.73390,800
2005-04-29$27.84$43.64669,900
2005-04-28$27.74$43.48852,600
2005-04-27$27.34$42.851,062,900
2005-04-26$28.06$43.98473,700
2005-04-25$28.20$44.20450,500
2005-04-22$28.00$43.89534,400
2005-04-21$27.90$43.73396,900
2005-04-20$27.52$43.14260,300
2005-04-19$27.76$43.51237,300
2005-04-18$27.70$43.42334,300
2005-04-15$27.61$43.28252,200
2005-04-14$27.86$43.67266,900
2005-04-13$27.84$43.64401,500
2005-04-12$28.29$44.34463,400
2005-04-11$28.25$44.28313,800
2005-04-08$28.40$44.52463,300
2005-04-07$28.58$44.80527,200
2005-04-06$28.62$44.86276,600
2005-04-05$28.45$44.59388,100
2005-04-04$28.69$44.97208,400
2005-04-01$28.74$45.05382,700
2005-03-31$28.80$45.14346,800
2005-03-30$29.22$45.80316,300
2005-03-29$28.86$45.24465,100
2005-03-28$28.79$44.69352,300
2005-03-24$28.75$44.63238,300
2005-03-23$28.65$44.47310,200
2005-03-22$28.70$44.55317,900
2005-03-21$29.00$45.01572,600
2005-03-18$29.30$45.48366,700
2005-03-17$29.64$46.01291,600
2005-03-16$29.77$46.21306,200
2005-03-15$29.85$46.33325,800
2005-03-14$30.14$46.78301,800
2005-03-11$29.91$46.43252,800
2005-03-10$30.00$46.57321,100
2005-03-09$29.97$46.52472,400
2005-03-08$30.31$47.05440,400
2005-03-07$30.30$47.03429,300
2005-03-04$30.48$47.31403,800
2005-03-03$30.16$46.81279,100
2005-03-02$30.11$46.74335,300
2005-03-01$29.98$46.53588,800
2005-02-28$29.86$46.35496,500
2005-02-25$29.95$46.49346,500
2005-02-24$29.73$46.15507,300
2005-02-23$29.32$45.51399,800
2005-02-22$28.82$44.73655,500
2005-02-18$29.37$45.59354,600
2005-02-17$29.47$45.74566,900
2005-02-16$29.54$45.85582,900
2005-02-15$29.97$46.52371,900
2005-02-14$30.05$46.64744,600
2005-02-11$30.64$47.56297,200
2005-02-10$30.00$46.57385,600
2005-02-09$29.64$46.01358,300
2005-02-08$29.84$46.32279,800
2005-02-07$29.86$46.35405,900
2005-02-04$29.95$46.49360,700
2005-02-03$29.95$46.49374,000
2005-02-02$30.20$46.88358,800
2005-02-01$30.00$46.57476,500
2005-01-31$29.65$46.02445,800
2005-01-28$29.40$45.63728,100
2005-01-27$29.51$45.81601,500
2005-01-26$29.68$46.07731,800
2005-01-25$30.56$47.43455,900
2005-01-24$31.00$48.12417,400
2005-01-21$31.00$48.12204,300
2005-01-20$31.28$48.55481,300
2005-01-19$31.42$48.77208,200
2005-01-18$31.76$49.30245,900
2005-01-14$31.32$48.61343,600
2005-01-13$31.39$48.72245,900
2005-01-12$31.49$48.88233,200
2005-01-11$31.53$48.94215,700
2005-01-10$31.78$49.33392,900
2005-01-07$31.65$49.13284,500
2005-01-06$31.94$49.58275,600
2005-01-05$31.81$49.38351,500
2005-01-04$31.98$49.64413,700
2005-01-03$32.68$50.73515,900