NYSE:AMG | Stock Price History | AFFILIATED MANAGERS GROUP, INC.

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
1997-11-21 to 2026-09-04
Data captured

Stock Price Chart

Blue: Split-adjusted close · Orange: Cumulative dividend-reinvested close

$9.50$20.20$42.96$91.36$194.27$413.131997-11-212026-08-27

Logarithmic scale. Both lines share the same starting value for the selected range.

Historical Stock Price

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volumeOpen priceExchange Volume
2026-09-04$363.0915,974
2026-09-03$365.0226,059
2026-09-02$367.9725,652
2026-09-01$363.1517,609
2026-08-31$369.3211,728
2026-08-28$371.0810,810
2026-08-27$370.48$382.71284,600$374.3420,153
2026-08-26$370.59$382.83195,600$369.8117,103
2026-08-25$365.28$377.34164,500$360.8410,395
2026-08-24$358.94$370.79257,100$359.9115,602
2026-08-21$356.21$367.97277,200$362.9719,775
2026-08-20$352.61$364.25267,400$354.2624,025
2026-08-19$355.41$367.15366,200$365.3124,814
2026-08-18$363.57$375.58377,700$367.1127,026
2026-08-17$371.40$383.67240,400$370.0015,859
2026-08-14$374.37$386.73278,000$367.1618,704
2026-08-13$367.10$379.22228,700$363.2712,477
2026-08-12$362.40$374.37209,100$363.7513,668
2026-08-11$359.07$370.93294,300$367.4618,597
2026-08-10$363.39$375.39277,000$369.0513,486
2026-08-07$369.70$381.90186,700$369.835,826
2026-08-06$372.18$384.46117,400$376.615,730
2026-08-05$375.62$388.01196,100$389.4010,036
2026-08-04$383.42$396.07290,000$384.5621,933
2026-08-03$380.89$393.46347,100$372.6316,834
2026-07-31$366.73$378.83232,400$365.5413,522
2026-07-30$365.46$377.52321,400$364.8818,054
2026-07-29$360.07$371.95257,100$365.8226,588
2026-07-28$370.12$382.33244,200$365.4216,370
2026-07-27$363.80$375.80199,300$362.9719,231
2026-07-24$358.29$370.11196,800$349.0114,541
2026-07-23$347.77$359.24239,700$342.5927,605
2026-07-22$346.70$358.14350,200$344.4134,755
2026-07-21$340.58$351.82910,100$369.4465,986
2026-07-20$366.12$378.20109,700$371.086,278
2026-07-17$369.83$382.03217,300
2026-07-16$376.79$389.22190,300
2026-07-15$379.59$392.11170,500
2026-07-14$366.00$378.08194,300
2026-07-13$359.78$371.65234,600
2026-07-10$366.41$378.50198,100
2026-07-09$364.96$377.00221,000
2026-07-08$356.27$368.03232,900
2026-07-07$359.72$371.59285,000
2026-07-06$356.61$368.38292,200
2026-07-02$344.60$355.97204,100
2026-07-01$336.91$348.03303,900
2026-06-30$338.40$349.57550,900
2026-06-29$342.46$353.76489,300
2026-06-26$341.98$353.26450,900
2026-06-25$340.08$351.30199,400
2026-06-24$339.10$350.29257,100
2026-06-23$350.22$361.78259,600
2026-06-22$357.31$369.10317,000
2026-06-18$352.90$364.54646,700
2026-06-17$355.67$367.41255,900
2026-06-16$357.50$369.30169,700
2026-06-15$352.93$364.58260,500
2026-06-12$354.62$366.32371,500
2026-06-11$344.33$355.69233,300
2026-06-10$335.34$346.40325,800
2026-06-09$342.12$353.41362,700
2026-06-08$336.62$347.73613,000
2026-06-05$336.81$347.92611,100
2026-06-04$334.82$345.87544,300
2026-06-03$311.61$321.89383,100
2026-06-02$310.52$320.77310,200
2026-06-01$302.45$312.43258,100
2026-05-29$302.85$312.84500,400
2026-05-28$302.96$312.96297,100
2026-05-27$307.92$318.08451,300
2026-05-26$308.65$318.83227,900
2026-05-22$301.96$311.92262,700
2026-05-21$302.63$312.62338,100
2026-05-20$301.34$311.28355,400
2026-05-19$294.90$304.63232,300
2026-05-18$297.03$306.83231,800
2026-05-15$293.91$303.61308,300
2026-05-14$302.10$312.07186,600
2026-05-13$303.48$313.49174,500
2026-05-12$301.53$311.48285,700
2026-05-11$301.28$311.22273,400
2026-05-08$302.80$312.78339,900
2026-05-07$297.76$307.57318,000
2026-05-06$306.02$316.11280,500
2026-05-05$303.64$313.65274,900
2026-05-04$297.53$307.34373,100
2026-05-01$291.07$300.66561,200
2026-04-30$294.67$304.38473,700
2026-04-29$289.10$298.63335,500
2026-04-28$292.47$302.11279,500
2026-04-27$291.57$301.18281,200
2026-04-24$287.44$296.91302,400
2026-04-23$284.39$293.76692,400
2026-04-22$301.30$311.23209,400
2026-04-21$300.91$310.83209,500
2026-04-20$300.97$310.89225,100
2026-04-17$294.98$304.70588,400
2026-04-16$299.41$309.28346,400
2026-04-15$301.15$311.08298,800