Biogen Stock Price History

Historical Data

Date	Open	High	Low	Close	Adj. Close	Change	Volume
Jan 28, 2026	173.63	175.06	170.85	174.83	174.83	0.41%	1,292,471
Jan 27, 2026	173.02	176.14	172.23	174.12	174.12	0.58%	747,828
Jan 26, 2026	171.67	174.31	170.59	173.12	173.12	0.89%	1,049,182
Jan 23, 2026	173.17	173.90	170.04	171.59	171.59	-1.27%	1,250,463
Jan 22, 2026	171.78	175.29	171.65	173.80	173.80	0.68%	996,425
Jan 21, 2026	165.31	172.87	165.31	172.62	172.62	4.38%	1,447,089
Jan 20, 2026	161.51	165.61	160.37	165.38	165.38	0.58%	1,879,947
Jan 16, 2026	168.87	169.34	163.74	164.42	164.42	-2.46%	1,816,538
Jan 15, 2026	169.03	169.79	166.79	168.57	168.57	-0.44%	1,562,727
Jan 14, 2026	177.73	178.41	165.58	169.31	169.31	-5.04%	3,635,883
Jan 13, 2026	185.42	186.32	177.05	178.30	178.30	-3.95%	1,597,380
Jan 12, 2026	188.00	188.00	182.73	185.63	185.63	-1.06%	1,280,360
Jan 9, 2026	186.74	190.20	186.49	187.62	187.62	0.87%	1,416,702
Jan 8, 2026	187.02	187.77	183.50	186.00	186.00	-0.49%	1,622,749
Jan 7, 2026	181.70	187.06	181.70	186.91	186.91	2.35%	2,122,447
Jan 6, 2026	174.94	182.97	174.30	182.61	182.61	4.57%	2,115,650
Jan 5, 2026	175.73	180.56	171.61	174.63	174.63	-1.79%	1,663,631
Jan 2, 2026	175.37	178.24	174.28	177.82	177.82	1.04%	1,095,744
Dec 31, 2025	175.76	177.19	175.02	175.99	175.99	-0.23%	890,441
Dec 30, 2025	176.30	176.99	175.72	176.40	176.40	-0.24%	609,867
Dec 29, 2025	177.00	178.46	176.31	176.83	176.83	-0.14%	928,193
Dec 26, 2025	175.30	177.19	175.00	177.08	177.08	0.43%	687,403
Dec 24, 2025	175.73	177.18	175.37	176.33	176.33	0.86%	434,748
Dec 23, 2025	174.26	175.58	173.08	174.82	174.82	0.07%	1,281,705
Dec 22, 2025	174.78	177.29	172.90	174.70	174.70	-0.06%	1,909,529
Dec 19, 2025	171.32	176.42	170.00	174.80	174.80	2.88%	14,994,759
Dec 18, 2025	171.59	173.00	168.56	169.91	169.91	-1.27%	2,761,018
Dec 17, 2025	171.43	173.83	169.55	172.10	172.10	0.35%	2,783,560
Dec 16, 2025	174.51	174.51	169.52	171.50	171.50	-2.41%	2,408,490
Dec 15, 2025	173.67	175.94	170.45	175.74	175.74	0.94%	2,291,589
Dec 12, 2025	173.49	175.08	171.27	174.10	174.10	0.93%	1,781,471
Dec 11, 2025	177.47	180.79	172.00	172.50	172.50	-2.84%	2,721,790
Dec 10, 2025	173.30	178.17	169.24	177.55	177.55	0.97%	2,147,901
Dec 9, 2025	179.91	181.99	175.39	175.84	175.84	-2.55%	1,506,685
Dec 8, 2025	181.30	182.12	179.21	180.44	180.44	-0.47%	1,474,568
Dec 5, 2025	181.96	183.15	181.10	181.30	181.30	-0.37%	1,209,961
Dec 4, 2025	181.86	182.69	179.27	181.98	181.98	0.68%	1,246,342
Dec 3, 2025	180.17	182.94	178.05	180.75	180.75	0.32%	1,845,129
Dec 2, 2025	177.32	180.55	174.53	180.18	180.18	1.35%	1,866,647
Dec 1, 2025	180.15	181.78	175.88	177.78	177.78	-2.37%	1,947,020
Nov 28, 2025	182.07	182.74	180.69	182.09	182.09	0.08%	566,362
Nov 26, 2025	181.96	183.93	180.76	181.94	181.94	-0.01%	1,483,073
Nov 25, 2025	177.07	182.97	176.09	181.96	181.96	2.91%	2,344,782
Nov 24, 2025	177.65	185.17	175.57	176.82	176.82	0.87%	4,164,240
Nov 21, 2025	168.54	176.02	167.42	175.30	175.30	4.23%	2,268,169
Nov 20, 2025	168.15	170.91	165.75	168.18	168.18	0.15%	1,914,503
Nov 19, 2025	168.83	168.90	165.79	167.93	167.93	-0.53%	1,765,993
Nov 18, 2025	164.40	170.78	163.00	168.83	168.83	2.52%	2,257,470
Nov 17, 2025	167.00	167.97	163.50	164.68	164.68	-1.71%	2,245,006
Nov 14, 2025	164.72	169.00	163.00	167.55	167.55	1.71%	2,620,813