NASDAQ:BIIB | Historical Stock Price | BIOGEN 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
1991-09-17 to 2026-09-04
Data captured

Stock Price Chart

Blue: Split-adjusted close · Orange: Cumulative dividend-reinvested close

$0.34$1.42$6.01$25.38$107.26$453.211991-09-172026-08-27

Logarithmic scale. Both lines share the same starting value for the selected range.

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Historical Stock Price — 2022

DateSplit-adjusted closeCumulative dividend-reinvested closeReported volumeOpen priceExchange Volume
2022-12-30$276.92$276.92640,700
2022-12-29$276.00$276.00594,000
2022-12-28$274.04$274.04521,000
2022-12-27$274.77$274.77638,600
2022-12-23$279.16$279.16624,800
2022-12-22$280.61$280.61946,500
2022-12-21$286.86$286.86797,000
2022-12-20$287.51$287.51873,100
2022-12-19$284.38$284.38863,400
2022-12-16$284.98$284.983,046,700
2022-12-15$283.44$283.441,090,200
2022-12-14$289.05$289.05905,300
2022-12-13$291.24$291.24937,200
2022-12-12$290.59$290.591,067,300
2022-12-09$285.37$285.37982,600
2022-12-08$289.10$289.101,695,600
2022-12-07$292.15$292.151,112,700
2022-12-06$291.47$291.471,036,100
2022-12-05$292.75$292.751,498,400
2022-12-02$298.90$298.901,682,600
2022-12-01$301.85$301.851,927,900
2022-11-30$305.17$305.174,068,300
2022-11-29$291.41$291.411,104,000
2022-11-28$291.90$291.902,074,400
2022-11-25$305.15$305.15470,800
2022-11-23$303.45$303.45998,000
2022-11-22$306.72$306.72868,800
2022-11-21$301.63$301.63969,800
2022-11-18$302.89$302.89847,500
2022-11-17$302.05$302.05959,900
2022-11-16$300.01$300.01804,100
2022-11-15$299.78$299.781,282,400
2022-11-14$299.06$299.062,686,200
2022-11-11$289.45$289.451,263,400
2022-11-10$290.70$290.701,439,000
2022-11-09$282.31$282.31800,700
2022-11-08$286.16$286.161,472,700
2022-11-07$284.62$284.621,265,900
2022-11-04$281.82$281.82894,500
2022-11-03$280.25$280.25869,100
2022-11-02$278.37$278.371,498,000
2022-11-01$280.04$280.041,068,700
2022-10-31$283.44$283.441,086,100
2022-10-28$284.29$284.291,543,600
2022-10-27$277.87$277.871,399,400
2022-10-26$280.43$280.432,059,900
2022-10-25$273.56$273.562,431,500
2022-10-24$274.62$274.621,849,400
2022-10-21$267.62$267.621,575,200
2022-10-20$262.65$262.651,030,900
2022-10-19$264.45$264.451,163,600
2022-10-18$270.28$270.281,348,800
2022-10-17$269.55$269.551,658,300
2022-10-14$264.63$264.631,478,900
2022-10-13$269.94$269.943,279,200
2022-10-12$253.67$253.671,592,300
2022-10-11$254.07$254.071,239,000
2022-10-10$254.78$254.781,191,600
2022-10-07$257.89$257.891,778,200
2022-10-06$262.26$262.261,246,500
2022-10-05$261.69$261.691,573,600
2022-10-04$267.45$267.452,162,000
2022-10-03$264.30$264.302,498,800
2022-09-30$267.00$267.003,749,700
2022-09-29$264.28$264.286,184,000
2022-09-28$276.61$276.6116,232,000
2022-09-27$197.79$197.79849,100
2022-09-26$195.75$195.751,021,400
2022-09-23$197.78$197.781,443,600
2022-09-22$200.62$200.62712,000
2022-09-21$199.34$199.341,068,500
2022-09-20$204.20$204.20947,100
2022-09-19$209.26$209.26843,700
2022-09-16$208.26$208.261,904,400
2022-09-15$206.72$206.721,021,700
2022-09-14$204.11$204.11840,800
2022-09-13$203.91$203.911,064,000
2022-09-12$212.88$212.88955,400
2022-09-09$211.84$211.841,053,000
2022-09-08$207.98$207.981,039,100
2022-09-07$200.67$200.67766,200
2022-09-06$194.69$194.69766,400
2022-09-02$196.03$196.03762,000
2022-09-01$199.79$199.79915,600
2022-08-31$195.38$195.38871,300
2022-08-30$196.08$196.08623,000
2022-08-29$197.11$197.11479,700
2022-08-26$198.59$198.59973,200
2022-08-25$204.83$204.83673,200
2022-08-24$201.78$201.78698,800
2022-08-23$202.81$202.81872,700
2022-08-22$207.70$207.70760,600
2022-08-19$214.09$214.09623,400
2022-08-18$216.34$216.34514,500
2022-08-17$217.58$217.58486,000
2022-08-16$219.64$219.64607,500
2022-08-15$222.38$222.38669,900
2022-08-12$220.99$220.99768,900
2022-08-11$218.22$218.22652,900
2022-08-10$221.04$221.04925,500
2022-08-09$217.59$217.59564,900
2022-08-08$217.56$217.56932,100
2022-08-05$218.20$218.20670,500
2022-08-04$217.30$217.30991,200
2022-08-03$213.60$213.601,005,500
2022-08-02$209.15$209.15685,300
2022-08-01$209.26$209.261,117,500
2022-07-29$215.06$215.061,152,000
2022-07-28$214.20$214.20852,600
2022-07-27$212.92$212.92848,800
2022-07-26$210.85$210.85916,200
2022-07-25$207.57$207.57776,900
2022-07-22$206.25$206.25842,300
2022-07-21$214.06$214.061,136,800
2022-07-20$207.49$207.491,991,500
2022-07-19$220.26$220.261,075,200
2022-07-18$214.34$214.341,056,100
2022-07-15$217.01$217.01732,100
2022-07-14$214.27$214.27920,100
2022-07-13$214.53$214.53635,100
2022-07-12$215.58$215.58711,100
2022-07-11$215.26$215.26609,700
2022-07-08$218.80$218.80918,900
2022-07-07$217.96$217.96900,600
2022-07-06$215.98$215.98969,400
2022-07-05$212.58$212.58897,900
2022-07-01$210.63$210.63800,700
2022-06-30$203.94$203.941,186,200
2022-06-29$205.23$205.231,260,100
2022-06-28$202.51$202.511,656,700
2022-06-27$213.57$213.57972,600
2022-06-24$211.93$211.932,947,000
2022-06-23$211.38$211.38864,000
2022-06-22$207.00$207.00988,100
2022-06-21$206.89$206.891,319,200
2022-06-17$201.74$201.741,884,700
2022-06-16$191.53$191.531,024,900
2022-06-15$197.26$197.26760,200
2022-06-14$194.18$194.18817,900
2022-06-13$192.16$192.161,052,800
2022-06-10$197.50$197.50999,700
2022-06-09$202.22$202.22894,100
2022-06-08$206.73$206.731,559,000
2022-06-07$201.08$201.08791,000
2022-06-06$197.11$197.11803,900
2022-06-03$200.62$200.62867,300
2022-06-02$198.51$198.511,094,300
2022-06-01$200.00$200.001,055,300
2022-05-31$200.00$200.001,767,400
2022-05-27$206.20$206.201,013,300
2022-05-26$204.22$204.22532,000
2022-05-25$202.36$202.36932,500
2022-05-24$202.54$202.54914,100
2022-05-23$199.40$199.40931,900
2022-05-20$199.65$199.65972,600
2022-05-19$193.09$193.091,171,100
2022-05-18$195.71$195.711,197,100
2022-05-17$202.90$202.90781,900
2022-05-16$198.38$198.38831,500
2022-05-13$199.11$199.111,230,400
2022-05-12$194.32$194.321,313,900
2022-05-11$191.07$191.071,483,500
2022-05-10$195.00$195.001,603,400
2022-05-09$187.54$187.541,589,700
2022-05-06$193.61$193.611,888,700
2022-05-05$201.18$201.181,384,800
2022-05-04$210.10$210.101,093,300
2022-05-03$205.70$205.701,545,700
2022-05-02$207.32$207.321,526,200
2022-04-29$207.44$207.441,049,400
2022-04-28$210.41$210.41876,700
2022-04-27$206.94$206.94728,800
2022-04-26$206.99$206.991,110,300
2022-04-25$214.54$214.541,040,500
2022-04-22$209.99$209.991,342,900
2022-04-21$218.40$218.40932,200
2022-04-20$220.43$220.431,028,600
2022-04-19$223.02$223.021,448,600
2022-04-18$212.54$212.541,033,400
2022-04-14$212.55$212.55917,900
2022-04-13$213.98$213.98671,600
2022-04-12$208.06$208.06976,100
2022-04-11$210.62$210.62869,000
2022-04-08$214.75$214.751,410,700
2022-04-07$211.64$211.64779,100
2022-04-06$209.71$209.711,014,200
2022-04-05$207.61$207.611,404,900
2022-04-04$211.64$211.64800,500
2022-04-01$210.65$210.65675,800
2022-03-31$210.60$210.60951,400
2022-03-30$211.03$211.03585,400
2022-03-29$214.95$214.95699,600
2022-03-28$211.68$211.68807,500
2022-03-25$210.97$210.97685,900
2022-03-24$213.01$213.01736,200
2022-03-23$209.62$209.62955,300
2022-03-22$210.92$210.92849,600
2022-03-21$206.81$206.811,284,400
2022-03-18$208.57$208.572,102,800
2022-03-17$205.32$205.321,057,100
2022-03-16$203.80$203.801,075,000
2022-03-15$197.36$197.361,306,300
2022-03-14$193.77$193.771,475,800
2022-03-11$197.67$197.67787,900
2022-03-10$198.64$198.641,166,200
2022-03-09$202.27$202.271,236,900
2022-03-08$202.01$202.011,407,100
2022-03-07$205.78$205.781,309,700
2022-03-04$209.45$209.45708,800
2022-03-03$211.23$211.23942,100
2022-03-02$207.79$207.791,108,400
2022-03-01$210.34$210.34804,400
2022-02-28$211.01$211.011,395,300
2022-02-25$207.38$207.381,035,200
2022-02-24$203.12$203.121,883,300
2022-02-23$209.08$209.08964,600
2022-02-22$209.81$209.811,254,000
2022-02-18$209.79$209.791,053,400
2022-02-17$210.60$210.601,083,600
2022-02-16$214.55$214.55763,800
2022-02-15$217.37$217.37741,500
2022-02-14$214.12$214.12872,900
2022-02-11$214.59$214.591,118,600
2022-02-10$220.04$220.041,316,000
2022-02-09$226.81$226.81989,700
2022-02-08$222.39$222.39991,300
2022-02-07$221.30$221.30832,600
2022-02-04$221.53$221.531,265,800
2022-02-03$220.17$220.172,005,000
2022-02-02$224.96$224.961,083,300
2022-02-01$229.37$229.371,049,600
2022-01-31$226.00$226.002,518,500
2022-01-28$225.21$225.211,325,600
2022-01-27$218.94$218.941,098,000
2022-01-26$219.60$219.601,684,500
2022-01-25$222.31$222.311,507,200
2022-01-24$224.69$224.691,995,700
2022-01-21$220.52$220.522,205,600
2022-01-20$225.91$225.911,471,400
2022-01-19$230.81$230.811,258,500
2022-01-18$233.81$233.811,631,500
2022-01-14$239.30$239.301,768,000
2022-01-13$236.67$236.673,781,400
2022-01-12$225.34$225.347,511,100
2022-01-11$241.52$241.521,557,700
2022-01-10$235.31$235.311,754,000
2022-01-07$232.60$232.601,394,900
2022-01-06$237.30$237.301,036,900
2022-01-05$239.27$239.271,167,400
2022-01-04$241.73$241.731,283,400
2022-01-03$244.14$244.141,642,200