BIIB
Biogen (BIIB)
NASDAQ
$217.38+$0.59 (+0.27%)
Price as of Aug 21, 2026 7:30 PM EDT
  • $32.0B
    Market Cap
  • 55.61%
    1-Year Change
  • Drug Manufacturers - General
    Industry
  • 1 Month
    +6.70%
    Low Price$200.14
    High Price$221.56
  • 3 Months
    +14.41%
    Low Price$188.83
    High Price$221.56
  • 1 Year
    +55.61%
    Low Price$132.22
    High Price$221.56
Date
Open
High
Low
Close
Change (%)
Volume
08/21/2026
217.76
219.12
215.00
216.78
+1.13%
722,348
08/20/2026
217.98
221.29
214.16
214.35
-3.25%
808,626
08/19/2026
215.33
222.15
215.08
221.56
+4.24%
886,896
08/18/2026
211.00
214.07
210.01
212.55
+1.63%
694,010
08/17/2026
208.36
210.49
207.62
209.15
-0.32%
617,240
08/14/2026
210.01
210.79
208.22
209.83
-0.39%
554,817
08/13/2026
212.98
215.61
208.79
210.65
+0.85%
860,095
08/12/2026
203.52
209.22
201.00
208.87
+2.44%
789,442
08/11/2026
206.63
207.57
203.53
203.89
-1.56%
936,835
08/10/2026
206.70
210.02
206.29
207.13
-0.39%
706,582
08/07/2026
207.38
208.31
204.16
207.94
+0.80%
877,469
08/06/2026
208.75
209.03
202.03
206.28
-0.17%
893,002
08/05/2026
210.60
212.18
205.80
206.63
-0.87%
873,781
08/04/2026
200.96
209.74
199.93
208.45
+3.29%
1,205,705
08/03/2026
203.34
203.85
199.58
201.82
-0.56%
940,993
07/31/2026
207.51
208.05
202.57
202.95
-2.40%
1,062,258
07/30/2026
204.38
210.19
203.09
207.93
-0.62%
892,939
07/29/2026
210.50
218.59
206.27
209.23
+1.76%
2,400,171
07/29/2026
$3.60 Earnings
07/28/2026
201.01
207.72
199.40
205.61
+2.73%
1,832,180
07/27/2026
202.75
204.47
199.83
200.14
-1.01%
762,581
07/24/2026
202.24
203.30
200.04
202.19
+0.78%
596,367
07/23/2026
197.04
203.60
196.92
200.62
+1.46%
1,032,070
07/22/2026
203.70
204.31
197.40
197.74
-2.67%
841,351
07/21/2026
199.47
203.70
198.59
203.16
+1.61%
652,841
07/20/2026
204.08
205.65
199.62
199.95
-2.93%
963,089
07/17/2026
208.60
215.79
203.40
205.99
-1.40%
1,151,284
07/16/2026
198.26
209.64
194.67
208.92
+5.92%
1,874,163
07/15/2026
191.21
198.58
186.03
197.24
+2.76%
2,067,351
07/14/2026
200.34
202.00
189.40
191.95
-8.17%
3,821,954
07/13/2026
199.33
210.87
197.74
209.03
+4.96%
2,259,822
07/10/2026
197.63
199.98
194.37
199.15
+0.12%
1,133,121
07/09/2026
198.92
201.01
196.00
198.91
-0.72%
1,657,542
07/08/2026
204.86
206.75
198.93
200.36
-2.60%
1,947,889
07/07/2026
211.86
212.00
205.65
205.70
-1.32%
1,156,881
07/06/2026
215.95
215.95
208.27
208.46
-3.54%
1,218,492
07/02/2026
212.74
219.02
210.75
216.12
+3.04%
1,155,166
07/01/2026
215.25
215.81
209.67
209.74
-2.93%
1,138,639
06/30/2026
218.00
218.00
212.58
216.06
-0.26%
1,091,325
06/29/2026
215.74
219.72
214.08
216.63
+0.28%
1,279,992
06/26/2026
202.53
218.06
202.29
216.03
+6.97%
2,374,526
06/25/2026
201.63
206.67
200.20
201.96
+1.19%
1,328,913
06/24/2026
199.34
202.06
198.66
199.59
+1.22%
1,349,121
06/23/2026
198.88
201.22
197.01
197.19
-1.26%
1,146,494
06/22/2026
199.48
200.98
194.74
199.71
+1.59%
1,675,310
06/18/2026
200.22
200.99
193.20
196.58
-1.05%
1,729,827
06/17/2026
195.14
201.75
194.04
198.67
+1.56%
1,009,010
06/16/2026
199.69
200.26
194.04
195.61
-1.53%
1,110,657
06/15/2026
198.37
199.37
195.89
198.64
-0.70%
883,965
06/12/2026
200.57
203.45
199.06
200.05
+0.05%
837,294
06/11/2026
195.49
201.18
194.24
199.96
+2.94%
914,786
06/10/2026
200.21
201.94
194.10
194.24
-2.44%
1,071,228
06/09/2026
195.51
199.63
193.45
199.10
+3.36%
937,793
06/08/2026
197.25
198.70
192.18
192.62
-1.39%
1,171,251
06/05/2026
196.45
200.66
195.14
195.34
-0.57%
880,439
06/04/2026
198.00
199.90
196.35
196.45
+0.25%
719,128
06/03/2026
187.69
196.51
187.48
195.96
+3.78%
891,563
06/02/2026
190.09
190.58
184.90
188.83
-1.77%
1,098,098
06/01/2026
194.50
195.28
191.67
192.23
-1.92%
841,500
05/29/2026
195.55
198.46
195.11
196.00
-0.20%
1,905,489
05/28/2026
196.97
198.00
194.50
196.39
-0.29%
556,332
05/27/2026
194.11
199.80
194.11
196.97
+2.01%
893,015
05/26/2026
194.30
195.50
192.27
193.08
-0.35%
930,213
05/22/2026
190.53
194.75
190.01
193.76
+2.26%
892,934
05/21/2026
187.40
190.27
185.85
189.47
+0.89%
1,475,335
05/20/2026
191.41
193.38
186.37
187.80
-1.45%
919,895
05/19/2026
191.72
193.03
188.64
190.56
-0.70%
1,054,139
05/18/2026
191.25
193.37
189.19
191.91
-0.54%
1,051,354
05/15/2026
191.83
194.91
190.66
192.95
+0.83%
1,252,271
05/14/2026
200.25
205.00
189.49
191.37
-6.43%
2,812,934
05/13/2026
199.33
205.97
198.86
204.53
+2.59%
1,272,028
05/12/2026
198.47
202.40
196.47
199.36
+0.71%
1,145,750
05/11/2026
194.76
200.31
194.75
197.95
+2.33%
1,772,230
05/08/2026
189.68
195.20
189.50
193.45
+1.08%
931,578
05/07/2026
190.34
192.10
188.86
191.38
+0.37%
735,692
05/06/2026
189.13
191.17
188.30
190.68
+0.82%
743,048
05/05/2026
187.38
189.69
186.00
189.13
+1.03%
586,074
05/04/2026
186.28
187.51
185.44
187.21
+0.08%
626,559
05/01/2026
189.28
190.57
186.14
187.06
-1.17%
696,812
04/30/2026
194.02
195.98
187.16
189.28
-2.62%
1,550,524
04/29/2026
183.12
195.89
180.18
194.38
+6.00%
2,439,795
04/29/2026
$3.57 Earnings
04/28/2026
182.45
184.41
181.89
183.38
+1.50%
1,235,814
04/27/2026
183.16
186.15
179.15
180.67
-2.01%
1,101,349
04/24/2026
186.65
186.65
183.17
184.38
-1.86%
723,368
04/23/2026
189.46
190.32
187.01
187.88
-1.15%
816,281
04/22/2026
189.31
192.75
188.67
190.07
+2.22%
1,328,297
04/21/2026
184.52
187.74
181.75
185.95
+1.42%
1,063,189
04/20/2026
179.54
184.26
178.72
183.34
+3.38%
1,484,372
04/17/2026
176.29
178.41
175.69
177.35
+0.76%
1,239,458
04/16/2026
178.82
179.99
174.85
176.02
-2.50%
953,722
04/15/2026
179.36
180.87
177.70
180.54
+0.88%
1,168,801
04/14/2026
177.71
181.77
177.45
178.96
+1.47%
1,550,580
04/13/2026
172.62
176.79
171.22
176.37
+1.96%
1,414,958
04/10/2026
177.97
177.97
172.32
172.97
-2.34%
1,501,831
04/09/2026
177.81
180.06
174.97
177.11
-1.55%
1,266,353
04/08/2026
178.24
180.24
176.35
179.90
+2.44%
1,289,686
04/07/2026
172.20
175.64
170.43
175.61
+1.90%
1,515,806
04/06/2026
177.00
177.39
168.64
172.34
-2.82%
2,149,104
04/02/2026
181.46
182.23
176.39
177.34
-3.50%
1,339,297