Affiliated Managers Group, Inc. (MGRB) NYSE

Currency In USD

MGRB Historical Return

If you invested $1000 in Affiliated Managers Group, Inc. (MGRB) since IPO date, it would be worth $878.34 as of September 12, 2026, based on a reinvested dividends scenario. Over the same period, a $1000 investment made 5 years ago would be worth $823.11, while $1000 invested 1 year ago would be worth $900.95. This corresponds to total returns of -12.17%, -17.69%, -9.9%, respectively, with annualized returns of -2.15%, -3.82%, -9.9%.

Custom investment amounts or purchase dates can also be explored using the Stoculator calculator. Past performance does not guarantee future results.

MGRB Historical Data

Date Range:

Date	Open	Close	Adj Close	High	Low	Volume
September 11, 2026	16.04	16.15	16.15	16.24	15.97	9,563
September 10, 2026	16.15	16.04	16.04	16.18	16.04	52,017
September 09, 2026	16.23	16.16	16.16	16.24	16.16	14,647
September 08, 2026	16.25	16.25	16.25	16.28	16.16	36,955
September 04, 2026	16.25	16.25	16.25	16.25	16.06	30,610
September 03, 2026	15.92	16.15	16.15	16.21	15.92	37,204
September 02, 2026	15.92	15.87	15.87	16.08	15.86	18,859
September 01, 2026	15.95	15.91	15.91	16.08	15.91	17,676
August 31, 2026	16.1	16	16	16.18	15.99	20,393
August 28, 2026	16.18	16.09	16.09	16.25	16.08	16,966
August 27, 2026	16.11	16.11	16.11	16.25	16.11	12,201
August 26, 2026	16.17	16.13	16.13	16.2	16.1	18,333
August 25, 2026	16.25	16.17	16.17	16.25	16.17	43,380
August 24, 2026	16.19	16.17	16.17	16.25	16.17	9,921
August 21, 2026	16.15	16.17	16.17	16.24	16.15	11,652
August 20, 2026	16.23	16.2	16.2	16.23	16.11	11,051
August 19, 2026	16.18	16.19	16.19	16.25	16.12	7,552
August 18, 2026	16.25	16.18	16.18	16.27	16.01	10,486
August 17, 2026	16.35	16.31	16.31	16.47	16.31	8,618
August 14, 2026	16.41	16.47	16.47	16.52	16.39	10,407
August 13, 2026	16.41	16.46	16.46	16.51	16.41	4,990
August 12, 2026	16.38	16.41	16.41	16.48	16.38	34,761
August 11, 2026	16.39	16.41	16.41	16.47	16.32	11,173
August 10, 2026	16.6	16.48	16.48	16.72	16.47	11,757
August 07, 2026	16.54	16.59	16.59	16.66	16.54	4,834
August 06, 2026	16.67	16.59	16.59	16.69	16.59	7,230
August 05, 2026	16.74	16.67	16.67	16.78	16.66	10,833
August 04, 2026	16.7	16.76	16.76	16.78	16.69	7,175
August 03, 2026	16.74	16.78	16.78	16.82	16.74	4,222
July 31, 2026	16.78	16.76	16.76	16.84	16.7	57,639
July 30, 2026	16.73	16.75	16.75	16.84	16.72	28,433
July 29, 2026	16.79	16.79	16.79	16.79	16.68	19,450
July 28, 2026	16.84	16.79	16.79	16.84	16.76	6,116
July 27, 2026	16.92	16.84	16.84	16.92	16.76	12,356
July 24, 2026	16.84	16.8	16.8	16.85	16.75	19,020
July 23, 2026	16.8	16.78	16.78	16.84	16.7	31,182
July 22, 2026	16.82	16.88	16.88	16.95	16.82	17,832
July 21, 2026	16.95	16.88	16.88	16.95	16.77	23,305
July 20, 2026	16.94	17	17	17.06	16.94	14,539
July 17, 2026	16.92	16.96	16.96	17.12	16.92	14,861
July 16, 2026	17.02	16.98	16.98	17.13	16.83	5,914
July 15, 2026	16.8	17.16	17.16	17.16	16.76	63,159
July 14, 2026	16.82	16.81	16.81	16.82	16.67	9,192
July 13, 2026	16.55	16.72	16.72	16.8	16.42	56,198
July 10, 2026	16.39	16.54	16.54	16.54	16.31	35,055
July 09, 2026	16.31	16.39	16.39	16.4	16.27	14,095
July 08, 2026	16.27	16.35	16.35	16.4	16.22	13,254
July 07, 2026	16.39	16.41	16.41	16.47	16.37	34,697
July 06, 2026	16.24	16.4	16.4	16.41	16.24	10,153
July 02, 2026	16.17	16.3	16.3	16.35	16.17	16,126
July 01, 2026	16.19	16.25	16.25	16.34	16.08	19,885
June 30, 2026	16.04	16.17	16.17	16.22	15.93	71,820
June 29, 2026	16.13	16.1	16.1	16.18	15.96	11,203
June 26, 2026	16.22	16.35	16.35	16.37	16.21	13,261
June 25, 2026	16.54	16.26	16.26	16.55	16.26	27,813
June 24, 2026	16.49	16.42	16.42	16.64	16.42	13,194
June 23, 2026	16.65	16.48	16.48	16.81	16.47	10,866
June 22, 2026	16.85	16.69	16.69	16.92	16.69	12,313
June 18, 2026	16.92	16.85	16.85	16.92	16.81	13,169
June 17, 2026	16.86	16.81	16.81	16.93	16.78	5,482