Biogen Inc. (BIIB)
NASDAQ: BIIB · Real-Time Price · USD
146.57
-3.04 (-2.03%)
At close: Oct 10, 2025, 4:00 PM EDT
146.57
0.00 (0.00%)
After-hours: Oct 10, 2025, 5:44 PM EDT

Biogen Stock Price History

Historical Data

DateOpenHighLowCloseAdj. CloseChangeVolume
Oct 10, 2025150.00150.20144.74146.42--2.13%1,067,335
Oct 9, 2025151.37152.15148.17149.61149.61-0.90%1,600,465
Oct 8, 2025152.36152.36149.64150.97150.97-0.81%1,333,277
Oct 7, 2025154.52154.58151.97152.21152.21-1.19%1,372,833
Oct 6, 2025159.61159.70153.10154.05154.05-3.65%1,817,888
Oct 3, 2025156.46160.20155.97159.88159.882.98%2,878,796
Oct 2, 2025154.00157.85152.22155.25155.250.67%2,882,551
Oct 1, 2025140.82154.44140.70154.22154.2210.09%4,059,913
Sep 30, 2025138.46141.04136.94140.08140.081.13%1,369,066
Sep 29, 2025137.49138.80135.39138.52138.520.84%1,285,534
Sep 26, 2025136.79138.00135.81137.37137.371.25%1,677,223
Sep 25, 2025138.40140.68135.41135.67135.67-1.45%1,260,311
Sep 24, 2025138.52139.28136.20137.67137.67-1.18%1,309,389
Sep 23, 2025140.27141.38138.73139.31139.31-0.96%1,103,063
Sep 22, 2025142.12142.64140.02140.66140.66-1.29%1,446,078
Sep 19, 2025143.96144.43141.49142.50142.50-0.91%3,748,754
Sep 18, 2025146.30146.45143.37143.81143.81-0.73%1,514,476
Sep 17, 2025143.48146.68143.39144.87144.870.83%1,502,045
Sep 16, 2025143.51147.23143.02143.68143.680.25%1,936,056
Sep 15, 2025144.82145.99141.12143.32143.32-1.06%1,432,587
Sep 12, 2025148.08150.28144.84144.86144.86-2.67%1,810,892
Sep 11, 2025143.47149.07142.86148.84148.844.37%1,714,600
Sep 10, 2025143.00143.45139.54142.61142.61-0.69%1,278,801
Sep 9, 2025141.16143.74140.51143.60143.601.59%1,490,789
Sep 8, 2025140.00143.23137.20141.35141.350.48%1,624,388
Sep 5, 2025140.13144.20139.96140.67140.670.52%1,561,897
Sep 4, 2025141.78142.28137.14139.94139.94-1.19%1,529,091
Sep 3, 2025139.56145.27139.56141.62141.621.43%2,244,285
Sep 2, 2025133.55140.06133.53139.63139.635.60%2,466,935
Aug 29, 2025132.50133.48131.52132.22132.22-0.32%1,083,013
Aug 28, 2025136.36136.36132.04132.65132.65-2.72%1,558,097
Aug 27, 2025136.00138.50135.79136.36136.36-0.26%1,403,137
Aug 26, 2025135.85136.91135.22136.72136.720.26%1,580,037
Aug 25, 2025139.01139.75136.14136.36136.36-2.12%861,976
Aug 22, 2025140.41142.32138.65139.31139.310.14%1,199,214
Aug 21, 2025138.26140.20137.59139.12139.120.09%1,074,281
Aug 20, 2025139.10140.50137.77138.99138.990.09%1,286,658
Aug 19, 2025136.37139.58136.02138.86138.862.17%1,447,803
Aug 18, 2025140.00141.18135.74135.91135.91-1.94%1,813,871
Aug 15, 2025136.16138.83135.88138.60138.602.71%1,644,116
Aug 14, 2025134.51135.23132.16134.94134.94-0.18%1,169,840
Aug 13, 2025129.62135.38129.40135.19135.194.86%1,549,212
Aug 12, 2025128.47131.10128.25128.93128.930.73%1,127,617
Aug 11, 2025131.16133.73127.71128.00128.00-2.04%1,070,293
Aug 8, 2025127.50131.26127.00130.67130.672.29%1,327,710
Aug 7, 2025130.02130.68127.65127.75127.75-1.23%1,718,239
Aug 6, 2025132.42132.67128.90129.34129.34-2.67%1,538,660
Aug 5, 2025131.91134.16131.57132.89132.890.52%1,395,619
Aug 4, 2025132.33133.98130.39132.20132.200.19%1,897,855
Aug 1, 2025128.96132.90124.56131.95131.953.09%2,798,550