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 — 1998

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volumeOpen priceExchange Volume
1998-12-31$19.92$19.92116,850
1998-12-30$19.83$19.83153,000
1998-12-29$19.63$19.6331,200
1998-12-28$20.08$20.0830,750
1998-12-24$19.92$19.925,550
1998-12-23$19.83$19.8331,650
1998-12-22$19.63$19.6315,900
1998-12-21$19.83$19.83298,050
1998-12-18$19.83$19.83256,800
1998-12-17$20.50$20.5080,700
1998-12-16$19.83$19.8389,250
1998-12-15$18.54$18.5458,500
1998-12-14$18.29$18.2914,700
1998-12-11$19.17$19.1731,200
1998-12-10$19.63$19.639,000
1998-12-09$19.79$19.7929,100
1998-12-08$20.42$20.4272,450
1998-12-07$19.58$19.5820,700
1998-12-04$19.42$19.4285,800
1998-12-03$18.46$18.46142,800
1998-12-02$18.17$18.1764,650
1998-12-01$18.21$18.2188,350
1998-11-30$17.88$17.8792,100
1998-11-27$18.00$18.00450
1998-11-25$18.00$18.0039,900
1998-11-24$17.92$17.92172,200
1998-11-23$17.46$17.4674,850
1998-11-20$16.92$16.92296,400
1998-11-19$17.33$17.33119,850
1998-11-18$17.29$17.2929,400
1998-11-17$17.33$17.33156,600
1998-11-16$16.75$16.75116,400
1998-11-13$17.50$17.5016,950
1998-11-12$18.21$18.2192,700
1998-11-11$18.04$18.0422,200
1998-11-10$18.17$18.17257,550
1998-11-09$18.21$18.2162,700
1998-11-06$18.50$18.5056,850
1998-11-05$19.13$19.13175,500
1998-11-04$17.67$17.67305,250
1998-11-03$16.33$16.3333,750
1998-11-02$15.54$15.5475,150
1998-10-30$14.83$14.8338,250
1998-10-29$13.92$13.9214,700
1998-10-28$13.88$13.8864,950
1998-10-27$14.08$14.08129,900
1998-10-26$13.92$13.9237,200
1998-10-23$14.42$14.4246,950
1998-10-22$13.17$13.17121,050
1998-10-21$11.88$11.8866,300
1998-10-20$11.50$11.50102,000
1998-10-19$12.25$12.2521,450
1998-10-16$12.33$12.3384,600
1998-10-15$12.17$12.1798,850
1998-10-14$10.67$10.6734,950
1998-10-13$10.58$10.5818,450
1998-10-12$10.54$10.5410,500
1998-10-09$10.00$10.0023,700
1998-10-08$9.50$9.50143,250
1998-10-07$9.58$9.58188,850
1998-10-06$9.25$9.25115,200
1998-10-05$9.13$9.1333,900
1998-10-02$9.50$9.5096,450
1998-10-01$10.67$10.6728,350
1998-09-30$12.00$12.0063,150
1998-09-29$12.00$12.0057,450
1998-09-28$12.17$12.1773,950
1998-09-25$12.08$12.0893,900
1998-09-24$12.46$12.4652,800
1998-09-23$12.63$12.63202,650
1998-09-22$13.04$13.0436,150
1998-09-21$12.88$12.8812,900
1998-09-18$12.79$12.7950,400
1998-09-17$12.29$12.2922,500
1998-09-16$12.75$12.7551,750
1998-09-15$12.29$12.2937,050
1998-09-14$12.21$12.21228,900
1998-09-11$10.13$10.1388,200
1998-09-10$9.13$9.1347,700
1998-09-09$10.63$10.62859,050
1998-09-08$11.42$11.4267,500
1998-09-04$10.71$10.7141,850
1998-09-03$11.29$11.2939,900
1998-09-02$11.92$11.9222,650
1998-09-01$12.00$12.00252,300
1998-08-31$11.83$11.83194,400
1998-08-28$14.63$14.63319,200
1998-08-27$15.71$15.7131,200
1998-08-26$16.00$16.00377,100
1998-08-25$16.33$16.3369,600
1998-08-24$16.00$16.0029,550
1998-08-21$16.17$16.17114,450
1998-08-20$16.04$16.0433,600
1998-08-19$16.33$16.3378,000
1998-08-18$17.08$17.0896,450
1998-08-17$16.67$16.67243,900
1998-08-14$15.83$15.8396,000
1998-08-13$17.96$17.9676,800
1998-08-12$18.79$18.7954,600
1998-08-11$19.33$19.3388,200
1998-08-10$20.79$20.799,150
1998-08-07$20.50$20.50103,050
1998-08-06$20.63$20.6332,400
1998-08-05$20.42$20.4275,000
1998-08-04$21.88$21.8829,250
1998-08-03$21.88$21.8819,950
1998-07-31$21.79$21.7919,650
1998-07-30$22.54$22.5446,200
1998-07-29$22.04$22.0418,750
1998-07-28$22.21$22.2141,250
1998-07-27$22.63$22.6382,350
1998-07-24$23.96$23.9675,000
1998-07-23$24.08$24.0838,700
1998-07-22$24.00$24.0063,150
1998-07-21$23.96$23.9695,400
1998-07-20$24.13$24.1222,500
1998-07-17$23.71$23.717,650
1998-07-16$23.67$23.6767,500
1998-07-15$23.29$23.2946,800
1998-07-14$22.75$22.7577,700
1998-07-13$21.83$21.8399,300
1998-07-10$21.67$21.6739,150
1998-07-09$22.29$22.2973,200
1998-07-08$22.54$22.5451,300
1998-07-07$23.33$23.3341,100
1998-07-06$23.04$23.0474,100
1998-07-02$23.54$23.5452,950
1998-07-01$24.96$24.9618,300
1998-06-30$24.75$24.75124,500
1998-06-29$25.17$25.1740,050
1998-06-26$24.75$24.7523,550
1998-06-25$24.50$24.5046,500
1998-06-24$24.54$24.5475,600
1998-06-23$24.21$24.2122,350
1998-06-22$24.00$24.0041,700
1998-06-19$24.29$24.2984,450
1998-06-18$23.58$23.5832,550
1998-06-17$23.54$23.54107,550
1998-06-16$23.67$23.67157,950
1998-06-15$23.67$23.6735,400
1998-06-12$23.63$23.6362,100
1998-06-11$23.29$23.29143,250
1998-06-10$22.71$22.7121,600
1998-06-09$22.88$22.8844,700
1998-06-08$23.00$23.0018,000
1998-06-05$23.13$23.1354,900
1998-06-04$23.21$23.2117,700
1998-06-03$23.25$23.2568,550
1998-06-02$23.50$23.5020,850
1998-06-01$23.67$23.6751,600
1998-05-29$23.88$23.8774,100
1998-05-28$24.00$24.0087,900
1998-05-27$25.25$25.2546,650
1998-05-26$25.21$25.2137,650
1998-05-22$24.04$24.0422,200
1998-05-21$24.29$24.2933,450
1998-05-20$24.33$24.3321,900
1998-05-19$24.63$24.6359,850
1998-05-18$24.58$24.5816,500
1998-05-15$24.71$24.7190,600
1998-05-14$25.29$25.294,050
1998-05-13$25.25$25.259,450
1998-05-12$25.38$25.3825,050
1998-05-11$25.29$25.2958,200
1998-05-08$25.88$25.8813,800
1998-05-07$26.00$26.0071,250
1998-05-06$26.00$26.007,500
1998-05-05$26.13$26.1323,700
1998-05-04$26.00$26.0053,550
1998-05-01$25.83$25.8341,400
1998-04-30$24.75$24.75323,400
1998-04-29$24.08$24.0887,150
1998-04-28$24.67$24.6779,800
1998-04-27$24.58$24.5825,200
1998-04-24$25.67$25.6722,050
1998-04-23$25.33$25.3336,150
1998-04-22$25.17$25.1737,950
1998-04-21$24.29$24.2938,250
1998-04-20$23.88$23.8718,750
1998-04-17$23.46$23.46135,300
1998-04-16$23.08$23.0870,800
1998-04-15$23.33$23.3351,150
1998-04-14$23.42$23.42143,400
1998-04-13$23.42$23.4224,150
1998-04-09$23.04$23.04166,650
1998-04-08$23.17$23.1729,100
1998-04-07$23.58$23.5819,650
1998-04-06$24.13$24.1227,450
1998-04-03$24.33$24.3349,650
1998-04-02$23.50$23.50106,500
1998-04-01$23.25$23.2539,900
1998-03-31$23.25$23.2596,000
1998-03-30$23.25$23.25106,650
1998-03-27$23.63$23.6314,400
1998-03-26$23.83$23.833,000
1998-03-25$23.67$23.6713,800
1998-03-24$23.21$23.2123,550
1998-03-23$23.00$23.0013,650
1998-03-20$23.71$23.7112,900
1998-03-19$24.38$24.386,150
1998-03-18$24.50$24.503,750
1998-03-17$24.50$24.505,700
1998-03-16$24.63$24.636,150
1998-03-13$24.75$24.7521,900
1998-03-12$24.46$24.468,100
1998-03-11$24.42$24.426,300
1998-03-10$24.58$24.587,050
1998-03-09$24.38$24.3825,650
1998-03-06$24.79$24.797,500
1998-03-05$24.17$24.1725,950
1998-03-04$24.67$24.6715,150
1998-03-03$24.42$24.4220,400
1998-03-02$24.63$24.6311,250
1998-02-27$24.67$24.6769,150
1998-02-26$24.58$24.5820,550
1998-02-25$24.29$24.2913,800
1998-02-24$24.29$24.2947,550
1998-02-23$23.58$23.58253,800
1998-02-20$23.33$23.3371,700
1998-02-19$22.00$22.0032,700
1998-02-18$21.58$21.5867,800
1998-02-17$21.58$21.5842,450
1998-02-13$21.21$21.2143,350
1998-02-12$21.04$21.0441,550
1998-02-11$21.33$21.33103,800
1998-02-10$21.54$21.5424,600
1998-02-09$21.50$21.503,750
1998-02-06$21.63$21.6348,750
1998-02-05$21.67$21.6721,000
1998-02-04$21.25$21.2517,250
1998-02-03$21.00$21.007,500
1998-02-02$20.50$20.5041,550
1998-01-30$20.13$20.1312,150
1998-01-29$20.04$20.0437,050
1998-01-28$19.83$19.8396,300
1998-01-27$19.83$19.83173,850
1998-01-26$20.08$20.0894,050
1998-01-23$20.04$20.04210,600
1998-01-22$20.04$20.0425,950
1998-01-21$20.17$20.1760,450
1998-01-20$20.17$20.179,300
1998-01-16$19.67$19.6729,400
1998-01-15$19.67$19.6782,950
1998-01-14$19.25$19.2592,850
1998-01-13$18.88$18.8878,900
1998-01-12$18.42$18.4219,350
1998-01-09$18.29$18.2935,100
1998-01-08$18.38$18.3841,250
1998-01-07$18.17$18.1735,700
1998-01-06$19.29$19.2935,100
1998-01-05$19.29$19.2999,750
1998-01-02$19.21$19.2134,050