Biogen Inc. (BIIB)
NASDAQ: BIIB · Real-Time Price · USD
177.23
+1.24 (0.70%)
Jan 2, 2026, 2:54 PM EST - Market open
Biogen Stock Price History
Historical Data
| Date | Open | High | Low | Close | Adj. Close | Change | Volume |
|---|---|---|---|---|---|---|---|
| Jan 2, 2026 | 175.37 | 177.19 | 174.28 | 176.62 | - | 0.36% | 386,281 |
| Dec 31, 2025 | 175.76 | 177.19 | 175.02 | 175.99 | 175.99 | -0.23% | 882,673 |
| Dec 30, 2025 | 176.30 | 176.99 | 175.72 | 176.40 | 176.40 | -0.24% | 609,667 |
| Dec 29, 2025 | 177.00 | 178.46 | 176.31 | 176.83 | 176.83 | -0.14% | 928,058 |
| Dec 26, 2025 | 175.30 | 177.19 | 175.00 | 177.08 | 177.08 | 0.43% | 687,346 |
| Dec 24, 2025 | 175.73 | 177.18 | 175.37 | 176.33 | 176.33 | 0.86% | 434,149 |
| Dec 23, 2025 | 174.26 | 175.58 | 173.08 | 174.82 | 174.82 | 0.07% | 1,275,737 |
| Dec 22, 2025 | 174.78 | 177.29 | 172.90 | 174.70 | 174.70 | -0.06% | 1,842,792 |
| Dec 19, 2025 | 171.32 | 176.42 | 170.00 | 174.80 | 174.80 | 2.88% | 14,909,227 |
| Dec 18, 2025 | 171.59 | 173.00 | 168.56 | 169.91 | 169.91 | -1.27% | 2,761,018 |
| Dec 17, 2025 | 171.43 | 173.83 | 169.55 | 172.10 | 172.10 | 0.35% | 2,783,517 |
| Dec 16, 2025 | 174.51 | 174.51 | 169.52 | 171.50 | 171.50 | -2.41% | 2,408,490 |
| Dec 15, 2025 | 173.67 | 175.94 | 170.45 | 175.74 | 175.74 | 0.94% | 2,291,589 |
| Dec 12, 2025 | 173.49 | 175.08 | 171.27 | 174.10 | 174.10 | 0.93% | 1,781,471 |
| Dec 11, 2025 | 177.47 | 180.79 | 172.00 | 172.50 | 172.50 | -2.84% | 2,721,790 |
| Dec 10, 2025 | 173.30 | 178.17 | 169.24 | 177.55 | 177.55 | 0.97% | 2,147,901 |
| Dec 9, 2025 | 179.91 | 181.99 | 175.39 | 175.84 | 175.84 | -2.55% | 1,506,685 |
| Dec 8, 2025 | 181.30 | 182.12 | 179.21 | 180.44 | 180.44 | -0.47% | 1,474,568 |
| Dec 5, 2025 | 181.96 | 183.15 | 181.10 | 181.30 | 181.30 | -0.37% | 1,209,961 |
| Dec 4, 2025 | 181.86 | 182.69 | 179.27 | 181.98 | 181.98 | 0.68% | 1,246,342 |
| Dec 3, 2025 | 180.17 | 182.94 | 178.05 | 180.75 | 180.75 | 0.32% | 1,845,129 |
| Dec 2, 2025 | 177.32 | 180.55 | 174.53 | 180.18 | 180.18 | 1.35% | 1,866,647 |
| Dec 1, 2025 | 180.15 | 181.78 | 175.88 | 177.78 | 177.78 | -2.37% | 1,947,020 |
| Nov 28, 2025 | 182.07 | 182.74 | 180.69 | 182.09 | 182.09 | 0.08% | 566,362 |
| Nov 26, 2025 | 181.96 | 183.93 | 180.76 | 181.94 | 181.94 | -0.01% | 1,483,073 |
| Nov 25, 2025 | 177.07 | 182.97 | 176.09 | 181.96 | 181.96 | 2.91% | 2,344,782 |
| Nov 24, 2025 | 177.65 | 185.17 | 175.57 | 176.82 | 176.82 | 0.87% | 4,164,240 |
| Nov 21, 2025 | 168.54 | 176.02 | 167.42 | 175.30 | 175.30 | 4.23% | 2,268,169 |
| Nov 20, 2025 | 168.15 | 170.91 | 165.75 | 168.18 | 168.18 | 0.15% | 1,914,503 |
| Nov 19, 2025 | 168.83 | 168.90 | 165.79 | 167.93 | 167.93 | -0.53% | 1,765,993 |
| Nov 18, 2025 | 164.40 | 170.78 | 163.00 | 168.83 | 168.83 | 2.52% | 2,257,470 |
| Nov 17, 2025 | 167.00 | 167.97 | 163.50 | 164.68 | 164.68 | -1.71% | 2,245,006 |
| Nov 14, 2025 | 164.72 | 169.00 | 163.00 | 167.55 | 167.55 | 1.71% | 2,620,813 |
| Nov 13, 2025 | 161.57 | 167.87 | 161.20 | 164.73 | 164.73 | 2.01% | 2,993,001 |
| Nov 12, 2025 | 160.00 | 162.56 | 158.05 | 161.48 | 161.48 | 1.20% | 1,659,866 |
| Nov 11, 2025 | 156.76 | 159.95 | 154.20 | 159.56 | 159.56 | 2.11% | 1,504,613 |
| Nov 10, 2025 | 155.41 | 156.55 | 153.77 | 156.26 | 156.26 | 0.48% | 1,258,595 |
| Nov 7, 2025 | 156.70 | 156.70 | 151.83 | 155.51 | 155.51 | -0.78% | 1,552,011 |
| Nov 6, 2025 | 155.76 | 157.80 | 153.76 | 156.74 | 156.74 | 2.16% | 1,848,716 |
| Nov 5, 2025 | 149.66 | 153.68 | 148.51 | 153.43 | 153.43 | 2.75% | 1,806,070 |
| Nov 4, 2025 | 150.89 | 152.90 | 149.05 | 149.33 | 149.33 | -1.39% | 2,029,011 |
| Nov 3, 2025 | 153.60 | 155.33 | 149.63 | 151.44 | 151.44 | -1.83% | 2,197,357 |
| Oct 31, 2025 | 147.99 | 155.18 | 146.52 | 154.27 | 154.27 | 3.11% | 2,235,290 |
| Oct 30, 2025 | 140.10 | 154.44 | 138.00 | 149.61 | 149.61 | 1.18% | 2,745,188 |
| Oct 29, 2025 | 148.82 | 149.91 | 147.54 | 147.86 | 147.86 | -0.85% | 2,450,701 |
| Oct 28, 2025 | 150.01 | 150.30 | 148.37 | 149.13 | 149.13 | -0.86% | 1,662,855 |
| Oct 27, 2025 | 150.07 | 150.92 | 148.10 | 150.43 | 150.43 | 0.36% | 1,214,395 |
| Oct 24, 2025 | 151.09 | 151.92 | 148.98 | 149.89 | 149.89 | -0.13% | 1,338,315 |
| Oct 23, 2025 | 148.99 | 150.29 | 147.57 | 150.08 | 150.08 | 1.60% | 1,245,964 |
| Oct 22, 2025 | 147.37 | 149.12 | 146.25 | 147.72 | 147.72 | 1.03% | 1,403,299 |