Arthur J. Gallagher & Co. - AJG - Stock Historical Data & Price

Date Range:

Date	Open	Close	Adj Close	High	Low	Volume
October 23, 2025	283.03	282.49	282.49	284.33	280.41	1.09M
October 22, 2025	279.52	283.04	283.04	284.06	277.92	1.41M
October 21, 2025	278.8	279.01	279.01	280.6	277.22	1.42M
October 20, 2025	280.22	279.26	279.26	280.82	275.73	1.17M
October 17, 2025	280.62	280.47	280.47	284.3	277.95	1.42M
October 16, 2025	287.27	280.17	280.17	288.33	276.5	2.38M
October 15, 2025	301.73	296.16	296.16	304.57	295.36	2.45M
October 14, 2025	298.45	303.73	303.73	303.98	296.87	1.23M
October 13, 2025	299.05	298	298	301.71	295.78	1.18M
October 10, 2025	304.3	301.74	301.74	305.74	300.66	1.18M
October 09, 2025	307.11	302.25	302.25	307.11	301.29	761,610
October 08, 2025	310.35	306.94	306.94	310.35	306.84	636,882
October 07, 2025	310.39	309.81	309.81	313.09	308.18	863,800
October 06, 2025	310.5	309.15	309.15	311.67	307.68	1.05M
October 03, 2025	307.78	310.48	310.48	313.55	307.58	767,240
October 02, 2025	303.07	308.67	308.67	308.72	302	1M
October 01, 2025	307.87	305.84	305.84	309.5	303.35	1.86M
September 30, 2025	305	309.74	309.74	310.49	304.46	1.67M
September 29, 2025	303.15	305.71	305.71	305.86	301.1	1.35M
September 26, 2025	304.92	304.15	304.15	308.8	303.18	877,100
September 25, 2025	305.06	303.08	303.08	306.89	300.82	1.37M
September 24, 2025	302.48	304.55	304.55	305.69	300.84	1.13M
September 23, 2025	299.85	304.36	304.36	304.52	299.01	1.6M
September 22, 2025	299.11	300.06	300.06	300.52	296.49	1.45M
September 19, 2025	300.4	299.65	299.65	301.2	296.44	2.61M
September 18, 2025	293	296.74	296.74	297.02	291.31	1.41M
September 17, 2025	293.05	292.66	292.66	295.21	291.99	1.25M
September 16, 2025	287.81	291.46	291.46	292.75	285.8	1.18M
September 15, 2025	297.16	289.4	289.4	298.16	288.2	1.17M
September 12, 2025	299.01	297.28	297.28	300.81	297.22	1.3M
September 11, 2025	293.6	300.61	300.61	301.02	292.58	1.34M
September 10, 2025	297.34	293.18	293.18	298.32	292.83	1.85M
September 09, 2025	298.24	298.5	298.5	300.44	297.23	1.12M
September 08, 2025	298.31	299.12	299.12	300	295.14	1.15M
September 05, 2025	299.08	299.18	299.18	300.86	296.43	1.22M
September 04, 2025	304.96	300.22	299.57	305.48	300.08	1.28M
September 03, 2025	304	303.7	303.7	305.95	301.67	1.84M
September 02, 2025	303.17	302.57	302.57	303.25	299.14	1.67M
August 29, 2025	299.68	302.75	302.75	303.17	298.64	1.47M
August 28, 2025	297.88	299.62	299.62	299.93	296.62	769,117
August 27, 2025	299.65	298.72	298.72	302.4	298.69	1.51M
August 26, 2025	298.06	300.2	300.2	300.27	295.74	2.31M
August 25, 2025	302	298.62	298.62	303.09	298.62	1.02M
August 22, 2025	306.68	303.17	303.17	307.38	302.46	1.17M
August 21, 2025	302.78	305.38	305.38	306.39	301.26	1.15M
August 20, 2025	302.09	302.64	302.64	305.13	300.64	1.57M
August 19, 2025	295.44	300.98	300.98	301.05	294.73	1.13M
August 18, 2025	292.02	294.51	294.51	296.53	291.08	1.38M
August 15, 2025	293.7	292.72	292.72	294.72	292.43	1.24M
August 14, 2025	295.5	293.41	293.41	295.5	289.93	1.28M
August 13, 2025	291.34	295.1	295.1	295.44	290.92	1.34M
August 12, 2025	289.1	290.65	290.65	291.21	286.82	1.28M
August 11, 2025	290	288.92	288.92	291.69	286.17	1.54M
August 08, 2025	290.95	289.44	289.44	293.97	288.42	1.73M
August 07, 2025	286.54	289.99	289.99	290.07	285.08	3.12M
August 06, 2025	286.42	286.26	286.26	288	284.14	1.14M
August 05, 2025	284.31	285.78	285.78	288.02	282.53	1.68M
August 04, 2025	284.49	284.61	284.61	286.87	282.23	1.78M
August 01, 2025	285	284.17	284.17	286	277.53	2.79M
July 31, 2025	282.02	287.25	287.25	290.93	281.83	2.55M

Arthur J. Gallagher & Co. (AJG) NYSE