Biogen Inc. (BIIB)
NASDAQ: BIIB
· Real-Time Price · USD
159.88
4.63 (2.98%)
At close: Oct 03, 2025, 3:59 PM
159.00
-0.55%
After-hours: Oct 03, 2025, 07:58 PM EDT
BIIB Stock Price History
Historical Data
| Date | Open | High | Low | Close | Adj Close | % Change | Volume |
|---|---|---|---|---|---|---|---|
| Oct 3, 2025 | 156.46 | 160.20 | 155.97 | 159.88 | 159.88 | 2.98% | 2,829,274 |
| Oct 2, 2025 | 154.00 | 157.85 | 152.22 | 155.25 | 155.25 | 0.67% | 2,882,551 |
| Oct 1, 2025 | 140.82 | 154.44 | 140.70 | 154.22 | 154.22 | 10.09% | 4,059,913 |
| Sep 30, 2025 | 138.46 | 141.04 | 136.94 | 140.08 | 140.08 | 1.13% | 1,369,066 |
| Sep 29, 2025 | 137.49 | 138.80 | 135.39 | 138.52 | 138.52 | 0.84% | 1,285,534 |
| Sep 26, 2025 | 136.79 | 138.00 | 135.81 | 137.37 | 137.37 | 1.25% | 1,677,223 |
| Sep 25, 2025 | 138.40 | 140.67 | 135.41 | 135.67 | 135.67 | -1.45% | 1,260,311 |
| Sep 24, 2025 | 138.52 | 139.28 | 136.20 | 137.67 | 137.67 | -1.18% | 1,309,389 |
| Sep 23, 2025 | 140.27 | 141.38 | 138.73 | 139.31 | 139.31 | -0.96% | 1,103,063 |
| Sep 22, 2025 | 142.12 | 142.64 | 140.02 | 140.66 | 140.66 | -1.29% | 1,446,078 |
| Sep 19, 2025 | 143.96 | 144.43 | 141.49 | 142.50 | 142.50 | -0.91% | 3,748,754 |
| Sep 18, 2025 | 146.30 | 146.45 | 143.37 | 143.81 | 143.81 | -0.73% | 1,514,476 |
| Sep 17, 2025 | 143.48 | 146.68 | 143.39 | 144.87 | 144.87 | 0.83% | 1,502,045 |
| Sep 16, 2025 | 143.51 | 147.23 | 143.02 | 143.68 | 143.68 | 0.25% | 1,936,056 |
| Sep 15, 2025 | 144.82 | 145.99 | 141.12 | 143.32 | 143.32 | -1.06% | 1,432,587 |
| Sep 12, 2025 | 148.08 | 150.28 | 144.84 | 144.86 | 144.86 | -2.67% | 1,810,892 |
| Sep 11, 2025 | 143.47 | 149.07 | 142.86 | 148.84 | 148.84 | 4.37% | 1,714,600 |
| Sep 10, 2025 | 143.00 | 143.45 | 139.54 | 142.61 | 142.61 | -0.69% | 1,278,801 |
| Sep 9, 2025 | 141.16 | 143.74 | 140.51 | 143.60 | 143.60 | 1.59% | 1,490,789 |
| Sep 8, 2025 | 140.00 | 143.23 | 137.20 | 141.35 | 141.35 | 0.48% | 1,624,388 |
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