Biogen Stock Price History

Historical Data

Date	Open	High	Low	Close	Adj. Close	Change	Volume
Oct 8, 2026	220.15	223.09	215.73	218.43	218.43	-1.67%	1,339,136
Oct 7, 2026	222.93	228.00	221.40	222.15	222.15	-0.33%	1,298,095
Oct 6, 2026	224.53	225.97	218.00	222.89	222.89	-0.31%	1,007,807
Oct 5, 2026	219.90	223.85	218.22	223.59	223.59	1.69%	936,987
Oct 2, 2026	222.98	224.08	219.81	219.88	219.88	-1.32%	780,427
Oct 1, 2026	225.50	228.31	222.50	222.82	222.82	-1.35%	1,755,492
Sep 30, 2026	227.23	229.36	225.51	225.88	225.88	-0.52%	1,553,331
Sep 29, 2026	227.02	229.41	224.45	227.07	227.07	-0.71%	1,161,173
Sep 28, 2026	225.87	230.49	225.51	228.69	228.69	0.48%	1,332,340
Sep 25, 2026	228.27	228.92	223.76	227.60	227.60	0.55%	958,030
Sep 24, 2026	226.80	228.72	224.31	226.36	226.36	-0.51%	1,034,741
Sep 23, 2026	226.94	229.19	222.36	227.53	227.53	0.96%	1,494,492
Sep 22, 2026	219.22	226.43	219.00	225.36	225.36	2.87%	1,112,343
Sep 21, 2026	216.14	221.92	214.59	219.07	219.07	1.66%	928,562
Sep 18, 2026	219.05	220.17	215.26	215.50	215.50	-1.62%	2,636,086
Sep 17, 2026	217.68	219.41	215.33	219.05	219.05	1.41%	836,707
Sep 16, 2026	216.41	218.29	214.81	216.01	216.01	-0.07%	606,493
Sep 15, 2026	216.71	216.71	213.54	216.17	216.17	-0.55%	756,047
Sep 14, 2026	221.00	222.25	215.56	217.36	217.36	0.10%	629,931
Sep 11, 2026	216.75	219.76	214.71	217.15	217.15	0.80%	1,075,556
Sep 10, 2026	209.92	216.70	208.93	215.43	215.43	2.23%	936,643
Sep 9, 2026	210.50	213.48	209.00	210.73	210.73	-0.83%	694,669
Sep 8, 2026	215.45	217.28	210.54	212.50	212.50	-3.77%	617,829
Sep 4, 2026	221.15	223.82	219.82	220.83	220.83	-1.64%	465,108
Sep 3, 2026	225.44	225.80	221.23	224.51	224.51	0.83%	550,745
Sep 2, 2026	218.20	225.59	216.97	222.67	222.67	3.07%	1,268,282
Sep 1, 2026	218.11	219.30	213.60	216.04	216.04	-0.28%	785,496
Aug 31, 2026	216.47	218.89	213.58	216.65	216.65	-0.85%	831,004
Aug 28, 2026	221.17	222.00	216.78	218.50	218.50	-1.35%	517,484
Aug 27, 2026	219.39	222.11	217.53	221.50	221.50	0.19%	497,524
Aug 26, 2026	219.34	222.00	218.69	221.07	221.07	0.14%	647,334
Aug 25, 2026	218.93	222.85	218.00	220.77	220.77	1.21%	495,435
Aug 24, 2026	216.40	218.50	213.96	218.12	218.12	0.62%	649,828
Aug 21, 2026	217.76	219.12	215.00	216.78	216.78	1.13%	722,347
Aug 20, 2026	217.98	221.29	214.16	214.35	214.35	-3.25%	808,625
Aug 19, 2026	215.33	222.15	215.08	221.56	221.56	4.24%	886,914
Aug 18, 2026	211.00	214.07	210.01	212.55	212.55	1.63%	694,009
Aug 17, 2026	208.36	210.49	207.62	209.15	209.15	-0.32%	617,238
Aug 14, 2026	210.01	210.79	208.22	209.83	209.83	-0.39%	554,816
Aug 13, 2026	212.98	215.61	208.79	210.65	210.65	0.85%	860,094
Aug 12, 2026	203.52	209.22	201.00	208.87	208.87	2.44%	789,441
Aug 11, 2026	206.63	207.57	203.53	203.89	203.89	-1.56%	936,834
Aug 10, 2026	206.70	210.02	206.29	207.13	207.13	-0.39%	706,425
Aug 7, 2026	207.38	208.31	204.16	207.94	207.94	0.80%	840,566
Aug 6, 2026	208.75	209.03	202.03	206.28	206.28	-0.17%	892,772
Aug 5, 2026	210.60	212.18	205.80	206.63	206.63	-0.87%	873,781
Aug 4, 2026	200.96	209.74	199.93	208.45	208.45	3.29%	1,205,704
Aug 3, 2026	203.34	203.85	199.58	201.82	201.82	-0.56%	940,993
Jul 31, 2026	207.51	208.05	202.57	202.95	202.95	-2.40%	1,062,258
Jul 30, 2026	204.38	210.19	203.09	207.93	207.93	-0.62%	892,938