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.

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Historical Stock Price — 2003

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volumeOpen priceExchange Volume
2003-12-31$46.39$46.39350,700
2003-12-30$46.78$46.78300,600
2003-12-29$46.55$46.55337,200
2003-12-26$45.68$45.6835,850
2003-12-24$45.46$45.46161,700
2003-12-23$45.47$45.47215,250
2003-12-22$45.47$45.47290,400
2003-12-19$44.83$44.83447,600
2003-12-18$44.73$44.73365,100
2003-12-17$44.33$44.33253,200
2003-12-16$44.41$44.41330,600
2003-12-15$44.20$44.20520,200
2003-12-12$44.27$44.27340,800
2003-12-11$44.53$44.53546,600
2003-12-10$44.35$44.35354,150
2003-12-09$44.50$44.50303,750
2003-12-08$45.77$45.77439,350
2003-12-05$45.21$45.21327,150
2003-12-04$45.54$45.54436,650
2003-12-03$45.70$45.70604,200
2003-12-02$45.13$45.13517,200
2003-12-01$44.65$44.65277,200
2003-11-28$44.33$44.3354,150
2003-11-26$43.99$43.99336,000
2003-11-25$44.11$44.11999,600
2003-11-24$43.74$43.74486,600
2003-11-21$42.85$42.85657,300
2003-11-20$42.27$42.27816,750
2003-11-19$42.83$42.831,537,350
2003-11-18$44.13$44.13548,850
2003-11-17$44.26$44.26928,200
2003-11-14$45.63$45.63487,950
2003-11-13$47.11$47.11744,600
2003-11-12$47.37$47.37195,450
2003-11-11$46.91$46.91195,600
2003-11-10$47.30$47.30295,650
2003-11-07$48.21$48.21256,650
2003-11-06$48.23$48.23261,600
2003-11-05$48.05$48.05310,350
2003-11-04$48.33$48.33518,250
2003-11-03$48.65$48.65364,950
2003-10-31$48.33$48.33394,050
2003-10-30$48.35$48.35487,050
2003-10-29$48.41$48.41539,550
2003-10-28$47.60$47.60564,150
2003-10-27$46.53$46.53347,100
2003-10-24$45.93$45.93473,100
2003-10-23$46.43$46.431,023,000
2003-10-22$45.73$45.73741,450
2003-10-21$47.34$47.34921,750
2003-10-20$46.45$46.45282,150
2003-10-17$46.42$46.42326,250
2003-10-16$47.18$47.18312,750
2003-10-15$47.20$47.20641,850
2003-10-14$47.13$47.13711,750
2003-10-13$45.81$45.81469,350
2003-10-10$44.06$44.06318,600
2003-10-09$44.31$44.31327,450
2003-10-08$43.95$43.95385,800
2003-10-07$44.13$44.13396,300
2003-10-06$43.91$43.91245,850
2003-10-03$43.90$43.90485,700
2003-10-02$43.28$43.28398,550
2003-10-01$42.83$42.83774,000
2003-09-30$41.87$41.87968,700
2003-09-29$42.77$42.77550,650
2003-09-26$42.95$42.95504,900
2003-09-25$44.31$44.31448,500
2003-09-24$44.64$44.64294,300
2003-09-23$45.07$45.07292,950
2003-09-22$45.02$45.02349,500
2003-09-19$45.77$45.77138,300
2003-09-18$45.71$45.71480,750
2003-09-17$45.03$45.03364,200
2003-09-16$45.01$45.01353,100
2003-09-15$44.63$44.63340,950
2003-09-12$44.50$44.50775,500
2003-09-11$44.37$44.37327,600
2003-09-10$44.00$44.00449,850
2003-09-09$44.71$44.71186,300
2003-09-08$44.69$44.69337,500
2003-09-05$44.03$44.03593,400
2003-09-04$44.86$44.86601,350
2003-09-03$45.90$45.90346,950
2003-09-02$45.74$45.74387,750
2003-08-29$45.20$45.20132,600
2003-08-28$44.95$44.95379,200
2003-08-27$44.60$44.60329,100
2003-08-26$44.40$44.40382,200
2003-08-25$44.41$44.41390,300
2003-08-22$45.01$45.01417,300
2003-08-21$45.53$45.53659,400
2003-08-20$44.84$44.84231,150
2003-08-19$44.73$44.73567,600
2003-08-18$43.50$43.50478,650
2003-08-15$43.25$43.25237,300
2003-08-14$43.33$43.33316,650
2003-08-13$43.37$43.37328,500
2003-08-12$43.90$43.90204,150
2003-08-11$43.28$43.28210,450
2003-08-08$43.13$43.13245,250
2003-08-07$42.74$42.74398,100
2003-08-06$41.90$41.90546,900
2003-08-05$42.15$42.15443,700
2003-08-04$42.91$42.91337,200
2003-08-01$42.84$42.84347,100
2003-07-31$43.61$43.61621,750
2003-07-30$43.27$43.27369,000
2003-07-29$43.83$43.83386,700
2003-07-28$44.59$44.59479,400
2003-07-25$43.79$43.79556,950
2003-07-24$43.50$43.50550,050
2003-07-23$43.13$43.131,026,600
2003-07-22$43.87$43.87685,500
2003-07-21$44.07$44.07348,150
2003-07-18$45.08$45.08463,050
2003-07-17$43.50$43.50513,300
2003-07-16$44.75$44.75303,450
2003-07-15$44.93$44.93496,350
2003-07-14$45.21$45.21659,850
2003-07-11$43.43$43.43259,800
2003-07-10$43.28$43.28392,100
2003-07-09$44.51$44.51568,350
2003-07-08$44.20$44.20756,300
2003-07-07$42.35$42.35687,600
2003-07-03$40.88$40.88307,950
2003-07-02$41.20$41.20462,150
2003-07-01$40.33$40.331,363,950
2003-06-30$40.63$40.63967,050
2003-06-27$41.34$41.34506,550
2003-06-26$41.93$41.93830,100
2003-06-25$41.32$41.32432,900
2003-06-24$41.39$41.39402,750
2003-06-23$40.59$40.59587,550
2003-06-20$41.77$41.77449,250
2003-06-19$41.60$41.601,354,950
2003-06-18$42.93$42.93661,350
2003-06-17$43.21$43.21388,200
2003-06-16$42.93$42.93982,650
2003-06-13$41.73$41.73828,300
2003-06-12$41.89$41.89738,600
2003-06-11$41.39$41.39689,250
2003-06-10$40.26$40.26768,300
2003-06-09$39.57$39.57949,650
2003-06-06$40.11$40.11927,600
2003-06-05$39.63$39.63693,750
2003-06-04$39.53$39.531,058,700
2003-06-03$38.35$38.35830,550
2003-06-02$38.29$38.291,796,850
2003-05-30$36.67$36.671,099,200
2003-05-29$35.33$35.33683,100
2003-05-28$34.86$34.86671,550
2003-05-27$33.24$33.24455,250
2003-05-23$32.92$32.92282,750
2003-05-22$32.51$32.51247,050
2003-05-21$32.22$32.22264,600
2003-05-20$31.90$31.90277,950
2003-05-19$32.03$32.03671,100
2003-05-16$32.67$32.67353,850
2003-05-15$32.43$32.43619,800
2003-05-14$31.45$31.45129,750
2003-05-13$31.57$31.57138,600
2003-05-12$32.00$32.00224,400
2003-05-09$31.37$31.37325,950
2003-05-08$31.37$31.37258,750
2003-05-07$31.77$31.77582,750
2003-05-06$31.45$31.45336,300
2003-05-05$31.21$31.21280,500
2003-05-02$31.12$31.12267,900
2003-05-01$30.55$30.55292,200
2003-04-30$30.87$30.87368,550
2003-04-29$30.57$30.57464,700
2003-04-28$30.29$30.29362,100
2003-04-25$29.77$29.77291,000
2003-04-24$30.35$30.35506,250
2003-04-23$31.10$31.10913,950
2003-04-22$31.49$31.49604,500
2003-04-21$30.43$30.43193,950
2003-04-17$30.67$30.67467,250
2003-04-16$30.80$30.80339,300
2003-04-15$30.73$30.73508,200
2003-04-14$30.13$30.13361,200
2003-04-11$29.58$29.58254,550
2003-04-10$29.88$29.88423,600
2003-04-09$30.00$30.00422,550
2003-04-08$30.04$30.04198,600
2003-04-07$30.41$30.41595,350
2003-04-04$30.12$30.12362,700
2003-04-03$30.34$30.34833,250
2003-04-02$30.23$30.23999,900
2003-04-01$28.30$28.30434,250
2003-03-31$27.71$27.71481,800
2003-03-28$28.33$28.33220,500
2003-03-27$28.68$28.68367,050
2003-03-26$29.03$29.03528,300
2003-03-25$28.69$28.69351,150
2003-03-24$28.27$28.27478,050
2003-03-21$29.59$29.59919,200
2003-03-20$28.93$28.93613,950
2003-03-19$28.29$28.29733,800
2003-03-18$28.43$28.431,250,550
2003-03-17$27.63$27.63624,750
2003-03-14$26.50$26.50815,250
2003-03-13$26.65$26.65914,700
2003-03-12$24.67$24.67731,700
2003-03-11$24.94$24.94990,300
2003-03-10$25.78$25.78664,350
2003-03-07$26.93$26.93645,450
2003-03-06$26.86$26.86500,400
2003-03-05$27.25$27.25776,400
2003-03-04$27.50$27.50402,600
2003-03-03$27.97$27.97535,950
2003-02-28$28.27$28.27752,700
2003-02-27$28.35$28.35917,100
2003-02-26$28.52$28.52404,100
2003-02-25$29.03$29.03713,250
2003-02-24$29.07$29.07526,350
2003-02-21$29.17$29.171,523,400
2003-02-20$29.17$29.171,542,300
2003-02-19$29.39$29.393,563,250
2003-02-18$30.47$30.47240,750
2003-02-14$29.75$29.75477,150
2003-02-13$29.60$29.60258,000
2003-02-12$29.63$29.63359,250
2003-02-11$29.97$29.97504,900
2003-02-10$29.93$29.93354,000
2003-02-07$29.23$29.23305,700
2003-02-06$29.95$29.95214,650
2003-02-05$30.55$30.55231,300
2003-02-04$30.40$30.40413,250
2003-02-03$31.53$31.53322,050
2003-01-31$30.96$30.96637,500
2003-01-30$30.55$30.55447,300
2003-01-29$31.00$31.00957,300
2003-01-28$31.87$31.87405,000
2003-01-27$31.66$31.66670,500
2003-01-24$32.19$32.19482,850
2003-01-23$33.47$33.47493,800
2003-01-22$33.81$33.81342,000
2003-01-21$34.77$34.77230,250
2003-01-17$35.57$35.57356,400
2003-01-16$36.29$36.29226,950
2003-01-15$36.00$36.00211,650
2003-01-14$36.33$36.33328,200
2003-01-13$36.85$36.85205,500
2003-01-10$36.63$36.63436,350
2003-01-09$36.42$36.42273,900
2003-01-08$35.67$35.67193,950
2003-01-07$36.11$36.11574,500
2003-01-06$35.57$35.57728,100
2003-01-03$34.23$34.23321,450
2003-01-02$35.00$35.00252,150