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 — 2008

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volumeOpen priceExchange Volume
2008-12-31$41.92$41.92811,700
2008-12-30$40.42$40.42778,000
2008-12-29$37.19$37.19831,300
2008-12-26$37.14$37.14477,300
2008-12-24$36.39$36.39259,800
2008-12-23$35.54$35.541,246,900
2008-12-22$35.10$35.10681,500
2008-12-19$36.80$36.801,309,900
2008-12-18$36.24$36.24828,400
2008-12-17$38.58$38.581,305,800
2008-12-16$37.27$37.271,162,900
2008-12-15$32.29$32.291,327,200
2008-12-12$33.17$33.171,144,500
2008-12-11$32.95$32.951,285,400
2008-12-10$36.70$36.701,419,100
2008-12-09$33.41$33.41973,000
2008-12-08$34.11$34.111,288,300
2008-12-05$30.33$30.331,338,200
2008-12-04$27.89$27.891,349,400
2008-12-03$27.75$27.751,394,200
2008-12-02$25.96$25.961,567,800
2008-12-01$23.04$23.041,229,800
2008-11-28$28.00$28.00848,300
2008-11-26$27.98$27.981,635,700
2008-11-25$23.34$23.342,268,200
2008-11-24$22.37$22.371,974,200
2008-11-21$18.99$18.992,509,300
2008-11-20$19.37$19.372,132,700
2008-11-19$23.64$23.641,588,800
2008-11-18$27.51$27.511,093,600
2008-11-17$28.01$28.011,305,400
2008-11-14$29.93$29.931,405,900
2008-11-13$31.52$31.523,009,200
2008-11-12$34.16$34.161,660,900
2008-11-11$36.63$36.631,621,600
2008-11-10$39.21$39.21707,300
2008-11-07$41.38$41.38740,900
2008-11-06$41.83$41.83727,400
2008-11-05$44.42$44.42833,500
2008-11-04$50.12$50.121,006,700
2008-11-03$48.38$48.38898,100
2008-10-31$46.38$46.381,005,400
2008-10-30$43.70$43.701,385,400
2008-10-29$40.41$40.411,645,300
2008-10-28$38.66$38.661,333,300
2008-10-27$35.94$35.941,070,500
2008-10-24$37.82$37.821,446,900
2008-10-23$39.26$39.261,931,800
2008-10-22$44.10$44.101,537,600
2008-10-21$50.07$50.07869,600
2008-10-20$53.00$53.00971,600
2008-10-17$54.05$54.051,105,400
2008-10-16$52.65$52.651,870,500
2008-10-15$57.42$57.42963,700
2008-10-14$64.58$64.581,530,300
2008-10-13$67.54$67.54259,000
2008-10-10$64.96$64.961,514,300
2008-10-09$58.46$58.461,415,000
2008-10-08$70.68$70.68647,900
2008-10-07$73.00$73.00352,700
2008-10-06$77.32$77.32335,500
2008-10-03$74.86$74.86418,800
2008-10-02$77.30$77.30263,600
2008-10-01$81.51$81.51738,000
2008-09-30$82.85$82.85726,100
2008-09-29$74.00$74.00611,900
2008-09-26$86.00$86.00409,000
2008-09-25$85.75$85.75406,500
2008-09-24$88.07$88.07589,600
2008-09-23$89.00$89.00296,500
2008-09-22$86.00$86.00562,600
2008-09-19$97.00$97.001,848,600
2008-09-18$96.00$96.002,622,700
2008-09-17$80.11$80.112,146,200
2008-09-16$90.84$90.841,937,300
2008-09-15$86.82$86.821,742,200
2008-09-12$93.61$93.61737,500
2008-09-11$93.19$93.191,005,200
2008-09-10$92.98$92.98885,600
2008-09-09$90.94$90.941,643,000
2008-09-08$97.15$97.151,268,900
2008-09-05$93.29$93.291,018,000
2008-09-04$92.04$92.041,008,100
2008-09-03$96.54$96.54480,900
2008-09-02$94.82$94.82609,200
2008-08-29$95.22$95.22606,100
2008-08-28$95.73$95.73890,900
2008-08-27$92.56$92.56511,900
2008-08-26$90.85$90.85480,900
2008-08-25$89.44$89.44597,800
2008-08-22$92.65$92.65579,000
2008-08-21$89.97$89.97480,200
2008-08-20$90.66$90.66703,900
2008-08-19$88.56$88.56596,200
2008-08-18$90.25$90.25803,600
2008-08-15$94.25$94.25776,400
2008-08-14$93.62$93.62842,400
2008-08-13$89.02$89.02871,700
2008-08-12$90.97$90.97568,300
2008-08-11$95.50$95.50750,000
2008-08-08$92.27$92.27663,400
2008-08-07$87.45$87.45737,400
2008-08-06$91.51$91.51598,500
2008-08-05$91.29$91.29854,900
2008-08-04$87.41$87.411,080,800
2008-08-01$86.56$86.56601,600
2008-07-31$86.40$86.401,116,300
2008-07-30$87.70$87.703,739,500
2008-07-29$89.75$89.75767,400
2008-07-28$83.36$83.36652,800
2008-07-25$87.77$87.77819,600
2008-07-24$85.41$85.41843,600
2008-07-23$90.50$90.502,269,000
2008-07-22$86.13$86.13897,400
2008-07-21$80.42$80.42751,300
2008-07-18$81.77$81.77821,100
2008-07-17$83.00$83.001,538,800
2008-07-16$81.15$81.15976,700
2008-07-15$74.75$74.751,278,200
2008-07-14$76.24$76.241,102,800
2008-07-11$78.92$78.921,508,500
2008-07-10$82.17$82.17673,100
2008-07-09$82.96$82.96904,400
2008-07-08$87.77$87.771,305,800
2008-07-07$82.71$82.71945,500
2008-07-03$85.17$85.17656,900
2008-07-02$85.33$85.33715,800
2008-07-01$89.62$89.62895,700
2008-06-30$90.06$90.06717,100
2008-06-27$91.34$91.34861,300
2008-06-26$90.45$90.45952,800
2008-06-25$96.36$96.36856,900
2008-06-24$95.83$95.831,411,300
2008-06-23$98.19$98.19873,800
2008-06-20$100.26$100.261,303,100
2008-06-19$101.60$101.60504,400
2008-06-18$100.25$100.25485,200
2008-06-17$100.85$100.85432,900
2008-06-16$102.89$102.89746,300
2008-06-13$100.61$100.61794,700
2008-06-12$95.96$95.96998,100
2008-06-11$95.91$95.91588,600
2008-06-10$99.56$99.56584,500
2008-06-09$97.86$97.86560,500
2008-06-06$98.54$98.54554,700
2008-06-05$103.50$103.50478,900
2008-06-04$99.62$99.62289,500
2008-06-03$100.46$100.46655,600
2008-06-02$100.30$100.30389,100
2008-05-30$102.50$102.50742,400
2008-05-29$100.23$100.23447,400
2008-05-28$97.90$97.90432,800
2008-05-27$97.86$97.86336,000
2008-05-23$96.86$96.86413,900
2008-05-22$97.87$97.87382,500
2008-05-21$96.19$96.19619,200
2008-05-20$99.75$99.75540,600
2008-05-19$103.20$103.20549,700
2008-05-16$103.52$103.52551,200
2008-05-15$103.71$103.71364,600
2008-05-14$102.23$102.23596,900
2008-05-13$102.82$102.82514,900
2008-05-12$103.74$103.74363,000
2008-05-09$102.37$102.37315,700
2008-05-08$103.15$103.15487,900
2008-05-07$101.54$101.54462,800
2008-05-06$105.01$105.01521,400
2008-05-05$105.70$105.70697,500
2008-05-02$106.72$106.72985,200
2008-05-01$103.75$103.75724,900
2008-04-30$99.34$99.34502,000
2008-04-29$99.23$99.23392,000
2008-04-28$98.45$98.451,031,500
2008-04-25$97.06$97.061,066,500
2008-04-24$97.37$97.371,057,200
2008-04-23$92.60$92.602,110,800
2008-04-22$94.70$94.701,055,800
2008-04-21$98.60$98.604,814,100
2008-04-18$98.77$98.771,210,900
2008-04-17$96.18$96.18946,800
2008-04-16$96.40$96.401,345,300
2008-04-15$90.14$90.14737,100
2008-04-14$89.84$89.84573,000
2008-04-11$90.91$90.91568,200
2008-04-10$95.17$95.17599,600
2008-04-09$92.85$92.85478,300
2008-04-08$97.31$97.31545,000
2008-04-07$98.40$98.40761,400
2008-04-04$95.55$95.55456,700
2008-04-03$96.97$96.97487,100
2008-04-02$96.46$96.46609,900
2008-04-01$95.79$95.79953,700
2008-03-31$90.74$90.74878,200
2008-03-28$87.44$87.44703,200
2008-03-27$88.55$88.55883,300
2008-03-26$92.80$92.80752,200
2008-03-25$96.73$96.731,010,800
2008-03-24$94.27$94.27712,900
2008-03-20$89.36$89.36759,700
2008-03-19$86.35$86.35623,900
2008-03-18$87.53$87.53598,500
2008-03-17$80.97$80.971,131,000
2008-03-14$86.00$86.001,002,700
2008-03-13$88.65$88.65853,700
2008-03-12$88.06$88.06775,300
2008-03-11$89.20$89.201,055,100
2008-03-10$84.81$84.81797,500
2008-03-07$89.73$89.73824,900
2008-03-06$89.75$89.75713,400
2008-03-05$93.21$93.21603,900
2008-03-04$92.49$92.49858,200
2008-03-03$93.75$93.75595,000
2008-02-29$96.35$96.35873,400
2008-02-28$99.35$99.35752,600
2008-02-27$100.31$100.31678,500
2008-02-26$98.88$98.881,258,800
2008-02-25$97.21$97.21704,900
2008-02-22$92.80$92.801,879,800
2008-02-21$98.51$98.51364,800
2008-02-20$99.92$99.92586,300
2008-02-19$98.22$98.22277,000
2008-02-15$99.82$99.82482,300
2008-02-14$100.88$100.88307,600
2008-02-13$103.76$103.76645,600
2008-02-12$101.78$101.78778,400
2008-02-11$99.14$99.14464,400
2008-02-08$98.76$98.76475,900
2008-02-07$99.81$99.81895,300
2008-02-06$96.60$96.60995,500
2008-02-05$98.41$98.41717,800
2008-02-04$102.90$102.90628,800
2008-02-01$103.45$103.45698,000
2008-01-31$98.39$98.391,124,700
2008-01-30$97.49$97.491,510,400
2008-01-29$100.16$100.16693,800
2008-01-28$98.15$98.15548,500
2008-01-25$95.78$95.781,195,300
2008-01-24$105.74$105.741,344,700
2008-01-23$96.09$96.091,556,000
2008-01-22$94.00$94.001,305,300
2008-01-18$90.61$90.611,655,100
2008-01-17$87.48$87.481,798,900
2008-01-16$92.80$92.801,964,100
2008-01-15$96.92$96.921,347,600
2008-01-14$102.03$102.03536,100
2008-01-11$101.76$101.761,130,400
2008-01-10$107.00$107.00647,100
2008-01-09$103.78$103.78947,400
2008-01-08$101.37$101.371,358,500
2008-01-07$105.81$105.81760,300
2008-01-04$106.43$106.43671,600
2008-01-03$110.50$110.50530,700
2008-01-02$112.32$112.32643,900