Biogen Inc. (BIIB)
NASDAQ: BIIB · Real-Time Price · USD
188.41
+0.17 (0.09%)
At close: Mar 10, 2026, 4:00 PM EDT
184.12
-4.29 (-2.28%)
After-hours: Mar 10, 2026, 6:14 PM EDT
Biogen Stock Price History
Historical Data
| Date | Open | High | Low | Close | Adj. Close | Change | Volume |
|---|---|---|---|---|---|---|---|
| Mar 10, 2026 | 187.69 | 190.78 | 187.02 | 188.41 | 188.41 | 0.09% | 687,022 |
| Mar 9, 2026 | 183.91 | 188.50 | 182.60 | 188.24 | 188.24 | 1.82% | 616,754 |
| Mar 6, 2026 | 186.25 | 186.25 | 181.24 | 184.87 | 184.87 | -1.71% | 772,743 |
| Mar 5, 2026 | 187.97 | 190.99 | 185.95 | 188.08 | 188.08 | -0.98% | 893,267 |
| Mar 4, 2026 | 185.06 | 190.37 | 183.16 | 189.94 | 189.94 | 3.22% | 951,766 |
| Mar 3, 2026 | 185.01 | 187.05 | 181.79 | 184.02 | 184.02 | -2.14% | 1,049,589 |
| Mar 2, 2026 | 190.22 | 190.75 | 186.72 | 188.05 | 188.05 | -1.97% | 690,801 |
| Feb 27, 2026 | 187.51 | 192.46 | 186.62 | 191.82 | 191.82 | 2.02% | 1,402,201 |
| Feb 26, 2026 | 190.30 | 190.74 | 185.90 | 188.02 | 188.02 | -1.42% | 988,117 |
| Feb 25, 2026 | 194.23 | 196.73 | 189.89 | 190.73 | 190.73 | -2.25% | 942,723 |
| Feb 24, 2026 | 196.03 | 198.72 | 194.43 | 195.13 | 195.13 | -0.62% | 716,382 |
| Feb 23, 2026 | 191.82 | 197.05 | 189.11 | 196.34 | 196.34 | 2.24% | 878,939 |
| Feb 20, 2026 | 190.78 | 192.60 | 189.95 | 192.03 | 192.03 | -0.03% | 799,225 |
| Feb 19, 2026 | 193.51 | 195.00 | 191.05 | 192.08 | 192.08 | -1.06% | 993,273 |
| Feb 18, 2026 | 195.32 | 195.68 | 193.11 | 194.13 | 194.13 | -0.76% | 1,049,036 |
| Feb 17, 2026 | 197.46 | 200.29 | 193.37 | 195.62 | 195.62 | -0.46% | 986,535 |
| Feb 13, 2026 | 196.27 | 199.50 | 195.52 | 196.52 | 196.52 | 0.52% | 1,352,792 |
| Feb 12, 2026 | 190.15 | 196.00 | 189.00 | 195.50 | 195.50 | 2.25% | 1,657,480 |
| Feb 11, 2026 | 188.35 | 192.00 | 187.20 | 191.20 | 191.20 | 1.17% | 996,929 |
| Feb 10, 2026 | 194.07 | 195.72 | 188.74 | 188.99 | 188.99 | -2.49% | 1,836,221 |
| Feb 9, 2026 | 199.83 | 201.00 | 191.88 | 193.81 | 193.81 | -3.66% | 2,096,252 |
| Feb 6, 2026 | 187.01 | 202.41 | 184.60 | 201.18 | 201.18 | 8.53% | 3,404,876 |
| Feb 5, 2026 | 184.87 | 187.73 | 184.54 | 185.36 | 185.36 | -0.05% | 2,542,641 |
| Feb 4, 2026 | 177.25 | 186.24 | 177.10 | 185.45 | 185.45 | 4.92% | 2,076,363 |
| Feb 3, 2026 | 177.79 | 182.67 | 176.19 | 176.76 | 176.76 | -1.30% | 1,594,142 |
| Feb 2, 2026 | 179.30 | 180.76 | 177.58 | 179.09 | 179.09 | -0.44% | 1,288,816 |
| Jan 30, 2026 | 177.09 | 180.14 | 175.96 | 179.89 | 179.89 | 2.11% | 1,487,978 |
| Jan 29, 2026 | 174.88 | 177.20 | 173.51 | 176.18 | 176.18 | 0.77% | 1,146,709 |
| Jan 28, 2026 | 173.63 | 175.06 | 170.85 | 174.83 | 174.83 | 0.41% | 1,304,662 |
| Jan 27, 2026 | 173.02 | 176.14 | 172.23 | 174.12 | 174.12 | 0.58% | 748,078 |
| Jan 26, 2026 | 171.67 | 174.31 | 170.59 | 173.12 | 173.12 | 0.89% | 1,049,188 |
| 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 |