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 — 2005

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volumeOpen priceExchange Volume
2005-12-30$80.25$80.25286,300
2005-12-29$80.90$80.90337,600
2005-12-28$80.35$80.35167,700
2005-12-27$80.01$80.01155,300
2005-12-23$80.63$80.63131,100
2005-12-22$79.86$79.86206,500
2005-12-21$80.17$80.17256,600
2005-12-20$79.70$79.70684,900
2005-12-19$79.82$79.82310,800
2005-12-16$80.70$80.70531,500
2005-12-15$81.43$81.43363,800
2005-12-14$81.83$81.83226,200
2005-12-13$81.85$81.85188,800
2005-12-12$81.70$81.70387,600
2005-12-09$81.28$81.28202,400
2005-12-08$80.71$80.71451,200
2005-12-07$80.31$80.31379,900
2005-12-06$79.88$79.88316,200
2005-12-05$79.96$79.96167,900
2005-12-02$80.19$80.19290,500
2005-12-01$79.34$79.34485,600
2005-11-30$78.84$78.84837,100
2005-11-29$80.67$80.67234,800
2005-11-28$80.91$80.91408,100
2005-11-25$82.76$82.7671,800
2005-11-23$82.49$82.49281,900
2005-11-22$82.03$82.03266,400
2005-11-21$81.30$81.30196,500
2005-11-18$81.03$81.03355,000
2005-11-17$80.47$80.47365,500
2005-11-16$78.95$78.95119,800
2005-11-15$79.09$79.09372,400
2005-11-14$80.25$80.25344,800
2005-11-11$80.15$80.15140,800
2005-11-10$79.58$79.58312,900
2005-11-09$79.13$79.13285,800
2005-11-08$78.43$78.43311,500
2005-11-07$77.92$77.92269,300
2005-11-04$77.38$77.38732,600
2005-11-03$76.67$76.67526,900
2005-11-02$78.11$78.11292,200
2005-11-01$77.51$77.51350,800
2005-10-31$76.75$76.75754,000
2005-10-28$75.00$75.00323,500
2005-10-27$73.99$73.99368,200
2005-10-26$73.95$73.95257,400
2005-10-25$73.71$73.711,078,500
2005-10-24$74.39$74.393,668,400
2005-10-21$73.41$73.41226,300
2005-10-20$72.60$72.60346,000
2005-10-19$73.00$73.00330,200
2005-10-18$71.53$71.53297,300
2005-10-17$71.75$71.75252,900
2005-10-14$71.50$71.50383,600
2005-10-13$70.04$70.04415,200
2005-10-12$69.11$69.11463,700
2005-10-11$70.58$70.58926,000
2005-10-10$71.45$71.45253,700
2005-10-07$71.90$71.90162,500
2005-10-06$71.27$71.27379,000
2005-10-05$72.19$72.19390,800
2005-10-04$71.70$71.70417,100
2005-10-03$72.90$72.90304,000
2005-09-30$72.42$72.42360,500
2005-09-29$71.25$71.25299,000
2005-09-28$71.04$71.04211,800
2005-09-27$71.17$71.17324,200
2005-09-26$71.43$71.43405,800
2005-09-23$72.00$72.00109,900
2005-09-22$71.91$71.91313,400
2005-09-21$71.84$71.84200,100
2005-09-20$73.47$73.47194,300
2005-09-19$73.57$73.57177,900
2005-09-16$73.77$73.77197,600
2005-09-15$72.60$72.60190,600
2005-09-14$72.56$72.56145,800
2005-09-13$72.93$72.93421,000
2005-09-12$73.31$73.31205,800
2005-09-09$73.15$73.15198,200
2005-09-08$73.10$73.101,051,900
2005-09-07$73.97$73.973,303,000
2005-09-06$74.58$74.58243,900
2005-09-02$73.50$73.50194,700
2005-09-01$73.55$73.55299,200
2005-08-31$72.61$72.61269,800
2005-08-30$72.01$72.01234,300
2005-08-29$72.00$72.00219,300
2005-08-26$71.82$71.82214,900
2005-08-25$72.07$72.07269,700
2005-08-24$71.62$71.62257,700
2005-08-23$71.81$71.81147,800
2005-08-22$71.25$71.25135,400
2005-08-19$70.87$70.8786,400
2005-08-18$70.63$70.63216,200
2005-08-17$71.53$71.53279,700
2005-08-16$70.95$70.95413,000
2005-08-15$72.29$72.29186,600
2005-08-12$71.97$71.9779,200
2005-08-11$72.19$72.19183,200
2005-08-10$71.55$71.55335,900
2005-08-09$71.21$71.21604,600
2005-08-08$70.19$70.19563,200
2005-08-05$71.00$71.00287,600
2005-08-04$71.76$71.76300,600
2005-08-03$72.37$72.37303,000
2005-08-02$72.71$72.71772,300
2005-08-01$72.12$72.12275,200
2005-07-29$71.30$71.30206,900
2005-07-28$71.55$71.55455,200
2005-07-27$71.15$71.151,209,100
2005-07-26$71.75$71.75229,400
2005-07-25$71.89$71.89519,400
2005-07-22$72.32$72.32717,800
2005-07-21$72.89$72.89741,700
2005-07-20$73.56$73.56453,100
2005-07-19$72.60$72.60592,100
2005-07-18$71.89$71.89502,800
2005-07-15$71.95$71.95494,000
2005-07-14$72.63$72.63432,600
2005-07-13$71.99$71.99301,100
2005-07-12$72.21$72.21300,900
2005-07-11$71.75$71.75389,600
2005-07-08$70.40$70.40652,900
2005-07-07$70.09$70.09411,600
2005-07-06$69.61$69.61434,900
2005-07-05$69.95$69.95395,100
2005-07-01$69.42$69.42345,100
2005-06-30$68.33$68.33324,800
2005-06-29$69.01$69.01341,900
2005-06-28$69.08$69.08624,400
2005-06-27$67.30$67.30522,300
2005-06-24$67.45$67.451,326,000
2005-06-23$64.90$64.90601,500
2005-06-22$65.87$65.87264,900
2005-06-21$65.72$65.72381,400
2005-06-20$66.45$66.45268,100
2005-06-17$67.20$67.20247,800
2005-06-16$66.90$66.90201,600
2005-06-15$66.62$66.62264,300
2005-06-14$67.03$67.03158,200
2005-06-13$66.98$66.98213,100
2005-06-10$67.18$67.18149,200
2005-06-09$67.25$67.25305,800
2005-06-08$66.40$66.40203,300
2005-06-07$67.21$67.21216,500
2005-06-06$67.60$67.60259,300
2005-06-03$67.16$67.16274,200
2005-06-02$67.29$67.29253,700
2005-06-01$67.08$67.08329,200
2005-05-31$66.70$66.70138,500
2005-05-27$66.25$66.25175,700
2005-05-26$66.16$66.16775,800
2005-05-25$65.45$65.45326,500
2005-05-24$65.99$65.99398,100
2005-05-23$65.25$65.25417,800
2005-05-20$64.95$64.95124,700
2005-05-19$64.96$64.96987,900
2005-05-18$64.90$64.90597,100
2005-05-17$63.19$63.19496,400
2005-05-16$63.30$63.30337,300
2005-05-13$61.56$61.56381,800
2005-05-12$61.84$61.84703,800
2005-05-11$62.81$62.81804,900
2005-05-10$62.81$62.81407,900
2005-05-09$63.40$63.40393,100
2005-05-06$62.96$62.96424,800
2005-05-05$63.60$63.60423,800
2005-05-04$64.19$64.19934,000
2005-05-03$62.00$62.00450,600
2005-05-02$62.54$62.54388,700
2005-04-29$62.53$62.53498,900
2005-04-28$61.70$61.70367,800
2005-04-27$62.45$62.45471,900
2005-04-26$62.25$62.25575,200
2005-04-25$62.55$62.55659,700
2005-04-22$61.08$61.08854,200
2005-04-21$60.03$60.03551,900
2005-04-20$58.69$58.69638,900
2005-04-19$59.47$59.471,100,500
2005-04-18$58.17$58.17521,200
2005-04-15$57.08$57.08458,000
2005-04-14$58.44$58.44872,000
2005-04-13$58.31$58.311,068,900
2005-04-12$60.10$60.10872,600
2005-04-11$60.41$60.41496,800
2005-04-08$61.36$61.36363,200
2005-04-07$61.75$61.75462,800
2005-04-06$61.70$61.70747,600
2005-04-05$62.63$62.63592,600
2005-04-04$62.77$62.77380,800
2005-04-01$61.59$61.59442,800
2005-03-31$62.03$62.03443,200
2005-03-30$60.94$60.94729,700
2005-03-29$59.82$59.82621,100
2005-03-28$61.15$61.15608,700
2005-03-24$61.85$61.85205,700
2005-03-23$61.62$61.62312,600
2005-03-22$62.26$62.26410,600
2005-03-21$63.25$63.25277,500
2005-03-18$64.31$64.31226,800
2005-03-17$64.57$64.57191,900
2005-03-16$64.65$64.65241,200
2005-03-15$65.00$65.00437,900
2005-03-14$64.65$64.65341,000
2005-03-11$64.55$64.55357,400
2005-03-10$65.50$65.50129,500
2005-03-09$65.44$65.44263,000
2005-03-08$65.86$65.86182,100
2005-03-07$65.94$65.94186,200
2005-03-04$66.18$66.18294,300
2005-03-03$65.35$65.35239,400
2005-03-02$65.68$65.68301,600
2005-03-01$66.02$66.02402,000
2005-02-28$64.76$64.76596,100
2005-02-25$64.17$64.17376,000
2005-02-24$63.60$63.60439,800
2005-02-23$63.86$63.86844,000
2005-02-22$63.69$63.691,282,100
2005-02-18$64.85$64.85319,300
2005-02-17$65.33$65.33365,400
2005-02-16$65.21$65.21176,100
2005-02-15$65.46$65.46181,200
2005-02-14$65.42$65.42450,500
2005-02-11$65.77$65.77197,000
2005-02-10$64.65$64.65190,500
2005-02-09$64.25$64.25272,800
2005-02-08$64.50$64.50232,000
2005-02-07$64.00$64.00404,000
2005-02-04$64.60$64.60310,800
2005-02-03$63.76$63.76385,500
2005-02-02$64.16$64.16330,300
2005-02-01$64.24$64.24430,400
2005-01-31$63.41$63.41362,300
2005-01-28$62.56$62.56579,000
2005-01-27$63.31$63.31545,000
2005-01-26$62.31$62.311,010,600
2005-01-25$60.70$60.70436,100
2005-01-24$60.34$60.34302,200
2005-01-21$60.84$60.84358,000
2005-01-20$61.55$61.551,263,900
2005-01-19$62.17$62.17712,400
2005-01-18$62.56$62.56511,200
2005-01-14$62.91$62.91278,200
2005-01-13$62.64$62.64282,800
2005-01-12$63.10$63.10505,800
2005-01-11$63.75$63.75310,600
2005-01-10$64.27$64.27341,000
2005-01-07$64.37$64.37369,400
2005-01-06$64.45$64.45370,600
2005-01-05$64.25$64.25482,500
2005-01-04$65.79$65.79631,900
2005-01-03$66.86$66.86508,200