Biogen Inc. (BIIB)
NASDAQ: BIIB
· Real-Time Price · USD
134.95
-0.24 (-0.18%)
At close: Aug 14, 2025, 3:59 PM
135.36
0.30%
Pre-market: Aug 15, 2025, 09:02 AM EDT
BIIB Stock Price History
Historical Data
| Date | Open | High | Low | Close | Adj Close | % Change | Volume |
|---|---|---|---|---|---|---|---|
| Aug 14, 2025 | 134.51 | 135.23 | 132.16 | 134.94 | 134.94 | -0.18% | 1,168,613 |
| Aug 13, 2025 | 129.62 | 135.38 | 129.40 | 135.19 | 135.19 | 4.86% | 1,549,212 |
| Aug 12, 2025 | 128.47 | 131.10 | 128.25 | 128.93 | 128.93 | 0.73% | 1,127,617 |
| Aug 11, 2025 | 131.16 | 133.73 | 127.71 | 128.00 | 128.00 | -2.04% | 1,070,300 |
| Aug 8, 2025 | 127.50 | 131.26 | 127.00 | 130.67 | 130.67 | 2.29% | 1,327,710 |
| Aug 7, 2025 | 130.02 | 130.68 | 127.65 | 127.75 | 127.75 | -1.23% | 1,718,239 |
| Aug 6, 2025 | 132.42 | 132.67 | 128.90 | 129.34 | 129.34 | -2.67% | 1,538,660 |
| Aug 5, 2025 | 131.91 | 134.16 | 131.57 | 132.89 | 132.89 | 0.52% | 1,395,619 |
| Aug 4, 2025 | 132.33 | 133.98 | 130.39 | 132.20 | 132.20 | 0.19% | 1,897,855 |
| Aug 1, 2025 | 128.96 | 132.90 | 124.56 | 131.95 | 131.95 | 3.09% | 2,798,550 |
| Jul 31, 2025 | 133.00 | 135.43 | 127.24 | 128.00 | 128.00 | 1.07% | 3,240,096 |
| Jul 30, 2025 | 128.56 | 129.78 | 125.97 | 126.64 | 126.64 | -0.99% | 1,892,100 |
| Jul 29, 2025 | 128.54 | 129.26 | 127.60 | 127.90 | 127.90 | -1.07% | 1,108,800 |
| Jul 28, 2025 | 131.35 | 131.85 | 128.43 | 129.28 | 129.28 | -1.70% | 1,045,656 |
| Jul 25, 2025 | 133.05 | 133.05 | 130.13 | 131.52 | 131.52 | -0.81% | 977,034 |
| Jul 24, 2025 | 130.78 | 132.65 | 130.00 | 132.59 | 132.59 | 1.23% | 1,280,623 |
| Jul 23, 2025 | 129.44 | 131.25 | 128.36 | 130.98 | 130.98 | 2.45% | 1,127,502 |
| Jul 22, 2025 | 123.38 | 127.94 | 123.38 | 127.85 | 127.85 | 4.21% | 1,319,120 |
| Jul 21, 2025 | 124.98 | 125.42 | 121.05 | 122.68 | 122.68 | -1.85% | 1,403,500 |
| Jul 18, 2025 | 129.37 | 129.58 | 124.68 | 124.99 | 124.99 | -2.88% | 1,524,966 |