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 — 1999

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volumeOpen priceExchange Volume
1999-12-31$16.19$22.3943,600
1999-12-30$16.17$22.3770,400
1999-12-29$15.95$22.06339,600
1999-12-28$16.09$22.12109,600
1999-12-27$16.06$22.08245,200
1999-12-23$16.05$22.06438,400
1999-12-22$15.64$21.50336,400
1999-12-21$15.09$20.75208,400
1999-12-20$14.75$20.27115,200
1999-12-17$14.91$20.49272,000
1999-12-16$14.38$19.76120,000
1999-12-15$13.98$19.22354,000
1999-12-14$13.52$18.58192,000
1999-12-13$13.38$18.3871,200
1999-12-10$13.59$18.6882,800
1999-12-09$13.58$18.66116,400
1999-12-08$13.97$19.2086,400
1999-12-07$13.92$19.1435,200
1999-12-06$13.86$19.0578,000
1999-12-03$13.86$19.0572,800
1999-12-02$13.66$18.7799,200
1999-12-01$13.73$18.88355,600
1999-11-30$13.63$18.73172,400
1999-11-29$13.42$18.45149,600
1999-11-26$13.41$18.4323,600
1999-11-24$13.41$18.43111,600
1999-11-23$13.94$19.16244,400
1999-11-22$13.64$18.75115,600
1999-11-19$13.47$18.51121,200
1999-11-18$13.66$18.7746,800
1999-11-17$13.63$18.7356,800
1999-11-16$13.88$19.0785,600
1999-11-15$13.50$18.5639,200
1999-11-12$13.80$18.9660,400
1999-11-11$13.72$18.8680,400
1999-11-10$13.66$18.77122,800
1999-11-09$13.72$18.8686,000
1999-11-08$14.00$19.24159,200
1999-11-05$13.88$19.07235,200
1999-11-04$13.27$18.23140,400
1999-11-03$13.13$18.0478,800
1999-11-02$12.88$17.70279,600
1999-11-01$12.83$17.63180,800
1999-10-29$12.94$17.78448,800
1999-10-28$12.75$17.53177,600
1999-10-27$12.61$17.33100,000
1999-10-26$12.39$17.03101,200
1999-10-25$12.63$17.35242,000
1999-10-22$12.88$17.70175,200
1999-10-21$12.77$17.55119,600
1999-10-20$12.91$17.74133,200
1999-10-19$12.75$17.53261,200
1999-10-18$12.59$17.31373,600
1999-10-15$12.72$17.4881,200
1999-10-14$12.59$17.31368,000
1999-10-13$12.64$17.37296,800
1999-10-12$12.73$17.50154,000
1999-10-11$12.83$17.63102,000
1999-10-08$12.97$17.8392,800
1999-10-07$13.06$17.9535,200
1999-10-06$13.09$18.00220,000
1999-10-05$13.16$18.08122,400
1999-10-04$13.19$18.1333,200
1999-10-01$13.23$18.19160,000
1999-09-30$13.31$18.30334,800
1999-09-29$13.20$18.15131,200
1999-09-28$13.23$18.19129,600
1999-09-27$13.20$18.01303,200
1999-09-24$13.19$17.99102,800
1999-09-23$13.17$17.97102,000
1999-09-22$13.47$18.3762,800
1999-09-21$13.22$18.03220,400
1999-09-20$13.39$18.27194,000
1999-09-17$13.39$18.27207,200
1999-09-16$13.36$18.22169,600
1999-09-15$13.39$18.27149,200
1999-09-14$13.28$18.12174,400
1999-09-13$13.38$18.2447,600
1999-09-10$13.33$18.1860,000
1999-09-09$13.28$18.1222,000
1999-09-08$13.28$18.12152,000
1999-09-07$13.47$18.37196,000
1999-09-03$13.59$18.54188,000
1999-09-02$13.55$18.48113,200
1999-09-01$13.56$18.50137,200
1999-08-31$13.66$18.63138,000
1999-08-30$13.52$18.44200,000
1999-08-27$13.91$18.97249,200
1999-08-26$13.75$18.76216,800
1999-08-25$13.52$18.4475,600
1999-08-24$13.58$18.52169,600
1999-08-23$13.48$18.39102,000
1999-08-20$13.47$18.37128,400
1999-08-19$13.36$18.2249,600
1999-08-18$13.41$18.29181,600
1999-08-17$13.39$18.2756,400
1999-08-16$13.31$18.1686,400
1999-08-13$13.28$18.12255,600
1999-08-12$12.69$17.31284,800
1999-08-11$12.69$17.31185,600
1999-08-10$12.73$17.37176,400
1999-08-09$13.17$17.97143,600
1999-08-06$13.25$18.0779,200
1999-08-05$13.14$17.93134,400
1999-08-04$13.13$17.9087,200
1999-08-03$13.13$17.90155,200
1999-08-02$12.94$17.65119,200
1999-07-30$13.03$17.78110,800
1999-07-29$13.06$17.82180,800
1999-07-28$13.06$17.82217,200
1999-07-27$13.11$17.88121,600
1999-07-26$12.88$17.5663,200
1999-07-23$13.14$17.9324,800
1999-07-22$13.19$17.9986,400
1999-07-21$13.23$18.05182,000
1999-07-20$13.14$17.93246,000
1999-07-19$13.31$18.16100,400
1999-07-16$13.59$18.54558,000
1999-07-15$13.63$18.59250,000
1999-07-14$12.91$17.6184,400
1999-07-13$12.84$17.5257,200
1999-07-12$13.03$17.78127,600
1999-07-09$12.75$17.39104,400
1999-07-08$12.48$17.03101,200
1999-07-07$12.36$16.8668,000
1999-07-06$12.47$17.0194,000
1999-07-02$12.48$17.0337,600
1999-07-01$12.48$17.0357,200
1999-06-30$12.38$16.88530,000
1999-06-29$12.50$17.05223,600
1999-06-28$12.38$16.88136,800
1999-06-25$12.20$16.5142,000
1999-06-24$12.36$16.7235,200
1999-06-23$12.39$16.7690,000
1999-06-22$12.42$16.8176,800
1999-06-21$12.23$16.5594,800
1999-06-18$12.25$16.57119,200
1999-06-17$12.17$16.4790,400
1999-06-16$12.17$16.47200,000
1999-06-15$12.11$16.3862,800
1999-06-14$12.08$16.3448,400
1999-06-11$12.02$16.2624,800
1999-06-10$11.98$16.2162,400
1999-06-09$12.00$16.2445,200
1999-06-08$12.00$16.24775,600
1999-06-07$12.03$16.2882,400
1999-06-04$12.02$16.2675,200
1999-06-03$12.00$16.24201,200
1999-06-02$12.11$16.38178,400
1999-06-01$12.03$16.28101,200
1999-05-28$12.17$16.4737,200
1999-05-27$12.05$16.30158,000
1999-05-26$11.94$16.15129,200
1999-05-25$12.02$16.2666,000
1999-05-24$11.92$16.13166,000
1999-05-21$11.95$16.17194,000
1999-05-20$12.00$16.24126,400
1999-05-19$11.86$16.04463,600
1999-05-18$11.69$15.8185,600
1999-05-17$11.73$15.8877,200
1999-05-14$11.73$15.8864,800
1999-05-13$11.75$15.9053,600
1999-05-12$11.75$15.9061,200
1999-05-11$11.70$15.8370,800
1999-05-10$11.88$16.07240,000
1999-05-07$11.89$16.09151,600
1999-05-06$11.98$16.2176,400
1999-05-05$12.02$16.26426,400
1999-05-04$11.83$16.00104,400
1999-05-03$11.81$15.98188,800
1999-04-30$11.88$16.0798,400
1999-04-29$11.91$16.11145,200
1999-04-28$11.95$16.17108,400
1999-04-27$11.95$16.1788,400
1999-04-26$11.98$16.2159,600
1999-04-23$12.03$16.2816,000
1999-04-22$12.08$16.34192,000
1999-04-21$12.08$16.34164,400
1999-04-20$12.09$16.36347,600
1999-04-19$12.31$16.66211,200
1999-04-16$12.09$16.3674,400
1999-04-15$12.11$16.3861,600
1999-04-14$12.17$16.4798,800
1999-04-13$12.09$16.36181,600
1999-04-12$12.23$16.5594,400
1999-04-09$12.13$16.4066,800
1999-04-08$11.89$16.0958,400
1999-04-07$11.91$16.1118,000
1999-04-06$12.00$16.24186,000
1999-04-05$11.75$15.9087,200
1999-04-01$11.58$15.6658,400
1999-03-31$11.50$15.56544,800
1999-03-30$11.58$15.66177,200
1999-03-29$11.63$15.73105,200
1999-03-26$11.84$15.8920,800
1999-03-25$11.77$15.78120,000
1999-03-24$11.38$15.26194,800
1999-03-23$11.31$15.1879,600
1999-03-22$11.42$15.3277,600
1999-03-19$11.63$15.59149,600
1999-03-18$11.70$15.7057,200
1999-03-17$11.58$15.53210,400
1999-03-16$11.64$15.62232,400
1999-03-15$11.95$16.04298,800
1999-03-12$11.81$15.85138,000
1999-03-11$11.83$15.87248,000
1999-03-10$12.14$16.29124,400
1999-03-09$12.13$16.2799,200
1999-03-08$12.41$16.64229,200
1999-03-05$12.30$16.50163,600
1999-03-04$12.19$16.35205,600
1999-03-03$12.05$16.16116,800
1999-03-02$12.00$16.10227,600
1999-03-01$12.06$16.18118,800
1999-02-26$11.94$16.0179,200
1999-02-25$11.89$15.95100,000
1999-02-24$11.70$15.70130,000
1999-02-23$11.80$15.83212,800
1999-02-22$11.89$15.95140,800
1999-02-19$11.50$15.4389,200
1999-02-18$11.28$15.13117,600
1999-02-17$11.27$15.1145,600
1999-02-16$11.34$15.2240,800
1999-02-12$11.22$15.0540,400
1999-02-11$11.30$15.15276,000
1999-02-10$11.19$15.01184,400
1999-02-09$11.28$15.13170,000
1999-02-08$11.25$15.0975,200
1999-02-05$11.34$15.2277,200
1999-02-04$11.38$15.26104,000
1999-02-03$11.66$15.64165,200
1999-02-02$11.48$15.41346,000
1999-02-01$11.84$15.89368,400
1999-01-29$12.50$16.77533,600
1999-01-28$11.78$15.80302,000
1999-01-27$11.38$15.26454,800
1999-01-26$11.27$15.11217,600
1999-01-25$11.25$15.09327,600
1999-01-22$10.97$14.71259,600
1999-01-21$11.13$14.92428,000
1999-01-20$11.23$15.07152,000
1999-01-19$11.13$14.92204,800
1999-01-15$10.59$14.21117,200
1999-01-14$10.91$14.6382,800
1999-01-13$11.13$14.92101,200
1999-01-12$11.22$15.05114,400
1999-01-11$11.25$15.0978,800
1999-01-08$11.14$14.9574,400
1999-01-07$11.28$15.1313,600
1999-01-06$11.44$15.34232,400
1999-01-05$11.38$15.2690,000
1999-01-04$11.11$14.90291,200