NYSE:AMG | Historical Stock Price | 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.

View year

Historical Stock Price — 2025

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volumeOpen priceExchange Volume
2025-12-31$288.28$297.77414,600
2025-12-30$290.35$299.91477,900
2025-12-29$292.08$301.70470,700
2025-12-26$296.07$305.82323,300
2025-12-24$291.13$300.72175,200
2025-12-23$292.29$301.91368,800
2025-12-22$287.67$297.14484,300
2025-12-19$279.09$288.281,097,700
2025-12-18$274.83$283.88584,800
2025-12-17$271.51$280.45571,800
2025-12-16$273.15$282.14296,900
2025-12-15$275.37$284.44348,400
2025-12-12$277.41$286.54231,000
2025-12-11$280.16$289.38666,900
2025-12-10$279.60$288.81815,600
2025-12-09$271.06$279.98940,000
2025-12-08$270.21$279.11232,300
2025-12-05$273.19$282.19155,300
2025-12-04$271.69$280.64140,700
2025-12-03$271.55$280.49200,800
2025-12-02$266.16$274.92215,000
2025-12-01$267.58$276.39393,500
2025-11-28$268.83$277.68116,800
2025-11-26$267.60$276.41251,400
2025-11-25$266.11$274.87304,700
2025-11-24$263.23$271.90272,800
2025-11-21$256.87$265.33280,000
2025-11-20$252.92$261.25372,900
2025-11-19$253.85$262.21414,200
2025-11-18$250.46$258.71161,400
2025-11-17$251.23$259.50259,300
2025-11-14$258.31$266.82308,900
2025-11-13$259.10$267.63302,700
2025-11-12$264.80$273.51417,800
2025-11-11$257.65$266.12512,100
2025-11-10$259.57$268.11147,800
2025-11-07$259.26$267.79347,400
2025-11-06$258.79$267.30280,400
2025-11-05$256.74$265.18334,800
2025-11-04$251.44$259.71399,700
2025-11-03$256.56$265.00698,700
2025-10-31$237.96$245.79335,000
2025-10-30$236.68$244.46151,700
2025-10-29$237.90$245.72172,900
2025-10-28$240.55$248.46178,000
2025-10-27$242.01$249.97251,700
2025-10-24$240.27$248.17191,800
2025-10-23$238.95$246.81175,500
2025-10-22$236.91$244.70248,500
2025-10-21$238.80$246.65276,700
2025-10-20$243.10$251.09283,800
2025-10-17$235.60$243.35171,000
2025-10-16$233.85$241.54204,200
2025-10-15$238.78$246.63140,400
2025-10-14$239.13$246.99252,500
2025-10-13$236.75$244.54139,600
2025-10-10$230.78$238.37182,900
2025-10-09$241.83$249.78109,100
2025-10-08$242.13$250.09177,400
2025-10-07$239.95$247.84192,300
2025-10-06$244.90$252.95170,800
2025-10-03$243.04$251.03437,000
2025-10-02$236.55$244.33187,600
2025-10-01$231.01$238.61219,300
2025-09-30$238.43$246.27144,100
2025-09-29$238.73$246.58145,400
2025-09-26$239.04$246.90179,800
2025-09-25$237.66$245.48134,500
2025-09-24$237.24$245.04230,800
2025-09-23$241.85$249.80324,300
2025-09-22$244.01$252.03211,600
2025-09-19$242.87$250.86328,700
2025-09-18$244.34$252.38268,000
2025-09-17$238.28$246.12346,000
2025-09-16$234.78$242.50250,100
2025-09-15$234.88$242.60224,100
2025-09-12$236.11$243.87206,400
2025-09-11$235.96$243.72275,000
2025-09-10$232.44$240.08157,800
2025-09-09$231.96$239.59197,200
2025-09-08$231.19$238.79132,300
2025-09-05$230.28$237.85119,600
2025-09-04$233.05$240.71144,700
2025-09-03$230.64$238.23189,700
2025-09-02$229.97$237.53307,200
2025-08-29$224.82$232.21137,200
2025-08-28$227.42$234.90174,300
2025-08-27$227.79$235.28189,600
2025-08-26$226.31$233.75190,000
2025-08-25$224.38$231.76146,700
2025-08-22$224.94$232.34217,000
2025-08-21$218.35$225.5392,700
2025-08-20$216.85$223.98145,700
2025-08-19$217.65$224.81201,200
2025-08-18$219.09$226.30258,900
2025-08-15$218.70$225.89129,900
2025-08-14$222.99$230.32136,800
2025-08-13$223.35$230.70221,200
2025-08-12$219.70$226.93151,900
2025-08-11$214.02$221.06110,400
2025-08-08$211.30$218.24102,700
2025-08-07$209.76$216.65183,300
2025-08-06$213.88$220.90148,700
2025-08-05$212.65$219.63132,000
2025-08-04$214.52$221.56235,300
2025-08-01$207.06$213.86197,100
2025-07-31$209.87$216.76281,800
2025-07-30$210.53$217.44127,500
2025-07-29$211.21$218.15115,500
2025-07-28$212.57$219.55168,600
2025-07-25$215.77$222.86258,600
2025-07-24$211.17$218.10115,500
2025-07-23$210.22$217.12105,700
2025-07-22$208.70$215.55205,100
2025-07-21$206.66$213.45206,500
2025-07-18$209.95$216.84258,100
2025-07-17$210.72$217.64311,800
2025-07-16$203.63$210.32245,100
2025-07-15$200.22$206.79185,200
2025-07-14$206.60$213.38148,800
2025-07-11$204.95$211.68101,700
2025-07-10$206.96$213.76175,400
2025-07-09$203.83$210.52204,100
2025-07-08$201.88$208.51304,300
2025-07-07$200.72$207.31246,100
2025-07-03$201.45$208.07401,700
2025-07-02$200.50$207.08421,200
2025-07-01$198.72$205.25338,900
2025-06-30$196.77$203.23294,100
2025-06-27$197.67$204.16415,000
2025-06-26$192.16$198.47189,100
2025-06-25$189.68$195.91156,500
2025-06-24$186.63$192.76174,900
2025-06-23$183.45$189.47238,000
2025-06-20$184.48$190.54427,000
2025-06-18$184.54$190.60143,700
2025-06-17$182.33$188.32190,500
2025-06-16$184.44$190.50119,200
2025-06-13$182.01$187.99131,600
2025-06-12$184.08$190.12153,700
2025-06-11$183.15$189.16155,300
2025-06-10$183.22$189.24110,200
2025-06-09$182.85$188.85142,400
2025-06-06$182.29$188.2898,200
2025-06-05$180.35$186.27169,100
2025-06-04$179.69$185.59156,300
2025-06-03$180.34$186.26207,300
2025-06-02$179.95$185.86377,000
2025-05-30$176.00$181.78281,300
2025-05-29$177.29$183.11360,500
2025-05-28$174.00$179.71325,600
2025-05-27$177.07$182.88262,400
2025-05-23$173.97$179.68182,200
2025-05-22$175.50$181.26202,300
2025-05-21$176.07$181.85273,100
2025-05-20$181.34$187.29265,800
2025-05-19$182.32$188.31181,500
2025-05-16$183.43$189.44337,100
2025-05-15$180.96$186.89234,200
2025-05-14$182.12$188.09265,200
2025-05-13$182.46$188.44400,800
2025-05-12$183.83$189.86307,700
2025-05-09$179.17$185.04347,300
2025-05-08$181.16$187.10330,600
2025-05-07$175.22$180.96321,000
2025-05-06$172.59$178.25269,800
2025-05-05$172.60$178.26228,700
2025-05-02$174.09$179.80292,200
2025-05-01$166.92$172.39185,400
2025-04-30$165.63$171.06192,200
2025-04-29$165.23$170.65140,800
2025-04-28$163.16$168.51212,200
2025-04-25$162.53$167.86129,600
2025-04-24$163.06$168.41195,700
2025-04-23$158.64$163.84199,600
2025-04-22$158.48$163.68170,200
2025-04-21$153.43$158.46164,500
2025-04-17$156.09$161.21190,800
2025-04-16$155.60$160.70218,500
2025-04-15$158.71$163.91164,900
2025-04-14$158.52$163.72302,800
2025-04-11$157.83$163.00227,700
2025-04-10$153.53$158.56277,800
2025-04-09$159.83$165.07313,800
2025-04-08$143.35$148.05256,300
2025-04-07$145.55$150.32410,200
2025-04-04$148.80$153.68319,700
2025-04-03$158.08$163.26326,200
2025-04-02$172.56$178.22160,800
2025-04-01$169.43$174.98166,000
2025-03-31$168.03$173.54208,000
2025-03-28$167.21$172.69137,400
2025-03-27$170.73$176.33170,400
2025-03-26$172.69$178.35170,300
2025-03-25$172.80$178.46219,200
2025-03-24$171.81$177.44191,800
2025-03-21$168.11$173.62578,200
2025-03-20$169.43$174.98248,100
2025-03-19$170.58$176.17327,900
2025-03-18$166.21$171.66190,200
2025-03-17$165.14$170.55253,500
2025-03-14$163.12$168.47326,200
2025-03-13$158.83$164.04297,100
2025-03-12$161.61$166.91352,500
2025-03-11$160.22$165.47517,700
2025-03-10$154.65$159.72353,200
2025-03-07$159.57$164.80299,500
2025-03-06$161.74$167.04283,200
2025-03-05$165.72$171.15251,500
2025-03-04$161.23$166.52337,100
2025-03-03$167.35$172.84232,700
2025-02-28$170.85$176.45457,800
2025-02-27$167.28$172.76172,200
2025-02-26$167.24$172.72199,000
2025-02-25$165.72$171.15227,100
2025-02-24$165.88$171.32167,600
2025-02-21$166.16$171.61196,700
2025-02-20$168.27$173.79171,300
2025-02-19$169.42$174.97149,600
2025-02-18$171.31$176.93268,900
2025-02-14$170.08$175.65180,200
2025-02-13$168.48$173.99175,800
2025-02-12$167.03$172.50229,300
2025-02-11$172.97$178.63169,400
2025-02-10$175.89$181.65250,700
2025-02-07$178.60$184.44196,900
2025-02-06$182.74$188.72301,800
2025-02-05$182.42$188.39247,300
2025-02-04$181.88$187.83232,000
2025-02-03$183.73$189.74221,700
2025-01-31$187.94$194.09160,700
2025-01-30$189.71$195.9299,100
2025-01-29$187.61$193.75129,600
2025-01-28$189.51$195.71144,000
2025-01-27$185.73$191.81160,400
2025-01-24$186.69$192.80146,600
2025-01-23$186.20$192.29172,700
2025-01-22$186.88$192.99187,800
2025-01-21$188.73$194.91254,700
2025-01-17$187.00$193.12149,000
2025-01-16$185.67$191.75133,900
2025-01-15$186.88$192.99219,900
2025-01-14$182.01$187.97188,100
2025-01-13$178.45$184.29281,200
2025-01-10$176.87$182.66260,500
2025-01-08$180.78$186.70175,500
2025-01-07$180.49$186.40199,800
2025-01-06$184.20$190.23311,100
2025-01-03$188.55$194.72233,100
2025-01-02$186.90$193.02134,200