Biogen Stock Price History

Historical Data

Date	Open	High	Low	Close	Adj. Close	Change	Volume
Oct 29, 2026	250.15	255.55	246.48	251.17	251.17	2.92%	480,177
Oct 28, 2026	244.93	258.78	243.03	244.05	244.05	-3.43%	2,493,008
Oct 27, 2026	250.35	253.98	248.46	252.73	252.73	0.19%	1,393,391
Oct 26, 2026	251.02	254.11	249.61	252.26	252.26	0.63%	958,847
Oct 23, 2026	251.68	252.44	246.15	250.69	250.69	-1.24%	1,157,376
Oct 22, 2026	240.61	254.41	240.02	253.84	253.84	5.34%	2,237,991
Oct 21, 2026	242.02	243.32	240.13	240.98	240.98	-0.87%	812,898
Oct 20, 2026	236.79	244.65	235.96	243.10	243.10	4.12%	1,492,300
Oct 19, 2026	231.81	236.00	231.04	233.48	233.48	0.36%	949,716
Oct 16, 2026	235.75	236.87	232.36	232.65	232.65	-1.15%	1,462,538
Oct 15, 2026	236.46	240.99	235.22	235.35	235.35	1.08%	1,571,885
Oct 14, 2026	228.99	234.20	228.00	232.83	232.83	1.72%	1,860,589
Oct 13, 2026	230.34	231.04	226.71	228.90	228.90	-0.22%	1,048,512
Oct 12, 2026	233.98	238.24	229.00	229.41	229.41	1.64%	1,461,143
Oct 9, 2026	220.62	227.20	219.23	225.71	225.71	3.33%	814,919
Oct 8, 2026	220.15	223.09	215.73	218.43	218.43	-1.67%	1,339,031
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