Biogen Stock Price History

Historical Data

Date	Open	High	Low	Close	Adj. Close	Change	Volume
Jan 21, 2026	141.85	141.85	141.85	145.80	145.80	3.81%	2
Jan 20, 2026	138.85	138.95	138.85	140.45	140.45	1.15%	103
Jan 19, 2026	137.30	139.90	137.30	138.85	138.85	-2.70%	14
Jan 16, 2026	148.20	148.20	142.85	142.70	142.70	-1.21%	76
Jan 15, 2026	151.55	151.55	144.70	144.45	144.45	-0.28%	60
Jan 14, 2026	153.15	153.15	152.05	144.85	144.85	-7.89%	5
Jan 13, 2026	158.50	158.50	158.50	157.25	157.25	0.22%	30
Jan 12, 2026	161.45	162.00	156.90	156.90	156.90	-2.43%	88
Jan 9, 2026	159.00	162.45	159.00	160.80	160.80	1.07%	69
Jan 8, 2026	157.85	159.00	157.85	159.10	159.10	-0.06%	27
Jan 7, 2026	155.00	158.40	155.00	159.20	159.20	2.71%	27
Jan 6, 2026	154.95	154.95	154.95	155.00	155.00	5.12%	2
Jan 5, 2026	150.55	153.00	148.95	147.45	147.45	-1.96%	64
Jan 2, 2026	150.40	150.40	150.40	150.40	150.40	0.30%	-
Dec 30, 2025	150.55	150.55	150.55	149.95	149.95	-0.63%	20
Dec 29, 2025	133.50	151.65	133.50	150.90	150.90	1.89%	28
Dec 23, 2025	148.10	148.10	148.10	148.10	148.10	-0.74%	22
Dec 22, 2025	148.50	148.50	148.50	149.20	149.20	0.71%	20
Dec 19, 2025	143.75	148.65	143.75	148.15	148.15	2.14%	2
Dec 18, 2025	145.90	146.65	145.90	145.05	145.05	-0.58%	139
Dec 17, 2025	144.65	144.65	144.65	145.90	145.90	0.55%	100
Dec 16, 2025	148.20	148.20	145.20	145.10	145.10	-1.96%	39
Dec 15, 2025	148.00	148.00	148.00	148.00	148.00	-0.24%	-
Dec 12, 2025	148.35	148.70	148.35	148.35	148.35	-3.07%	38
Dec 11, 2025	149.70	149.70	149.70	153.05	153.05	1.90%	9
Dec 10, 2025	147.15	150.20	143.65	150.20	150.20	-2.97%	946
Dec 9, 2025	153.30	153.30	153.30	154.80	154.80	-0.90%	24
Dec 8, 2025	154.00	154.00	154.00	156.20	156.20	-0.57%	5
Dec 5, 2025	156.55	156.55	156.45	157.10	157.10	0.71%	570
Dec 4, 2025	154.30	154.30	154.30	156.00	156.00	0.10%	20
Dec 3, 2025	154.80	155.00	154.80	155.85	155.85	1.63%	120
Dec 2, 2025	151.55	153.40	151.50	153.35	153.35	0.69%	155
Dec 1, 2025	156.55	156.55	155.50	152.30	152.30	-2.96%	191
Nov 28, 2025	158.50	158.50	157.20	156.95	156.95	-0.29%	114
Nov 27, 2025	156.00	157.15	155.85	157.40	157.40	-0.16%	11
Nov 26, 2025	156.20	157.95	155.90	157.65	157.65	0.10%	154
Nov 25, 2025	152.55	155.15	152.05	157.50	157.50	0.45%	74
Nov 24, 2025	155.80	159.90	153.80	156.80	156.80	4.36%	342
Nov 21, 2025	147.00	150.00	144.45	150.25	150.25	1.69%	545
Nov 20, 2025	144.10	148.00	144.10	147.75	147.75	1.58%	421
Nov 19, 2025	145.25	146.60	145.25	145.45	145.45	0.62%	254
Nov 18, 2025	139.90	144.55	139.85	144.55	144.55	0.35%	48
Nov 17, 2025	144.90	145.90	143.35	144.05	144.05	-0.38%	115
Nov 14, 2025	140.95	143.85	140.95	144.60	144.60	1.01%	492
Nov 13, 2025	142.20	144.40	137.65	143.15	143.15	2.73%	410
Nov 12, 2025	138.95	139.60	136.50	139.35	139.35	3.34%	232
Nov 11, 2025	135.85	135.85	135.85	134.85	134.85	0.33%	30
Nov 10, 2025	135.85	138.40	134.40	134.40	134.40	1.17%	11
Nov 7, 2025	141.55	141.55	132.65	132.85	132.85	-0.93%	165
Nov 6, 2025	131.45	134.80	131.45	134.10	134.10	1.28%	177