Biogen Inc. (BIIB)
NASDAQ: BIIB · Real-Time Price · USD
207.94
+1.66 (0.80%)
Aug 7, 2026, 4:00 PM EDT - Market closed
Biogen Stock Price History
| Date | Open | High | Low | Close | Adj. Close | Change | Volume |
|---|---|---|---|---|---|---|---|
| Aug 7, 2026 | 207.38 | 208.31 | 204.16 | 207.94 | 207.94 | 0.80% | 814,472 |
| Aug 6, 2026 | 208.75 | 209.03 | 202.03 | 206.28 | 206.28 | -0.17% | 887,393 |
| Aug 5, 2026 | 210.60 | 212.18 | 205.80 | 206.63 | 206.63 | -0.87% | 873,170 |
| Aug 4, 2026 | 200.96 | 209.74 | 199.93 | 208.45 | 208.45 | 3.29% | 1,195,658 |
| Aug 3, 2026 | 203.34 | 203.85 | 199.58 | 201.82 | 201.82 | -0.56% | 940,993 |
| Jul 31, 2026 | 207.51 | 208.05 | 202.57 | 202.95 | 202.95 | -2.40% | 1,062,258 |
| Jul 30, 2026 | 204.38 | 210.19 | 203.09 | 207.93 | 207.93 | -0.62% | 892,938 |
| Jul 29, 2026 | 210.50 | 218.59 | 206.27 | 209.23 | 209.23 | 1.76% | 2,400,174 |
| Jul 28, 2026 | 201.01 | 207.72 | 199.40 | 205.61 | 205.61 | 2.73% | 1,832,179 |
| Jul 27, 2026 | 202.75 | 204.47 | 199.83 | 200.14 | 200.14 | -1.01% | 762,581 |
| Jul 24, 2026 | 202.24 | 203.30 | 200.04 | 202.19 | 202.19 | 0.78% | 596,372 |
| Jul 23, 2026 | 197.04 | 203.60 | 196.92 | 200.62 | 200.62 | 1.46% | 1,032,070 |
| Jul 22, 2026 | 203.70 | 204.31 | 197.40 | 197.74 | 197.74 | -2.67% | 841,350 |
| Jul 21, 2026 | 199.47 | 203.70 | 198.59 | 203.16 | 203.16 | 1.61% | 652,841 |
| Jul 20, 2026 | 204.08 | 205.65 | 199.62 | 199.95 | 199.95 | -2.93% | 963,088 |
| Jul 17, 2026 | 208.60 | 215.79 | 203.40 | 205.99 | 205.99 | -1.40% | 1,151,283 |
| Jul 16, 2026 | 198.26 | 209.64 | 194.67 | 208.92 | 208.92 | 5.92% | 1,872,778 |
| Jul 15, 2026 | 191.21 | 198.58 | 186.03 | 197.24 | 197.24 | 2.76% | 2,067,350 |
| Jul 14, 2026 | 200.34 | 202.00 | 189.40 | 191.95 | 191.95 | -8.17% | 3,902,309 |
| Jul 13, 2026 | 199.33 | 210.87 | 197.74 | 209.03 | 209.03 | 4.96% | 2,259,821 |
| Jul 10, 2026 | 197.63 | 199.98 | 194.37 | 199.15 | 199.15 | 0.12% | 1,133,120 |
| Jul 9, 2026 | 198.92 | 201.01 | 196.00 | 198.91 | 198.91 | -0.72% | 1,657,327 |
| Jul 8, 2026 | 204.86 | 206.75 | 198.93 | 200.36 | 200.36 | -2.60% | 1,947,888 |
| Jul 7, 2026 | 211.86 | 212.00 | 205.65 | 205.70 | 205.70 | -1.32% | 1,156,880 |
| Jul 6, 2026 | 215.95 | 215.95 | 208.27 | 208.46 | 208.46 | -3.54% | 1,218,492 |
| Jul 2, 2026 | 212.74 | 219.02 | 210.75 | 216.12 | 216.12 | 3.04% | 1,155,165 |
| Jul 1, 2026 | 215.25 | 215.81 | 209.67 | 209.74 | 209.74 | -2.93% | 1,138,639 |
| Jun 30, 2026 | 218.00 | 218.00 | 212.58 | 216.06 | 216.06 | -0.26% | 1,091,325 |
| Jun 29, 2026 | 215.74 | 219.72 | 214.08 | 216.63 | 216.63 | 0.28% | 1,279,990 |
| Jun 26, 2026 | 202.53 | 218.06 | 202.29 | 216.03 | 216.03 | 6.97% | 2,374,525 |
| Jun 25, 2026 | 201.63 | 206.67 | 200.20 | 201.96 | 201.96 | 1.19% | 1,328,911 |
| Jun 24, 2026 | 199.34 | 202.06 | 198.66 | 199.59 | 199.59 | 1.22% | 1,349,120 |
| Jun 23, 2026 | 198.88 | 201.22 | 197.01 | 197.19 | 197.19 | -1.26% | 1,053,492 |
| Jun 22, 2026 | 199.48 | 200.98 | 194.74 | 199.71 | 199.71 | 1.59% | 1,675,111 |
| Jun 18, 2026 | 200.22 | 200.99 | 193.20 | 196.58 | 196.58 | -1.05% | 1,729,826 |
| Jun 17, 2026 | 195.14 | 201.75 | 194.04 | 198.67 | 198.67 | 1.56% | 1,009,032 |
| Jun 16, 2026 | 199.69 | 200.26 | 194.04 | 195.61 | 195.61 | -1.53% | 1,110,656 |
| Jun 15, 2026 | 198.37 | 199.37 | 195.89 | 198.64 | 198.64 | -0.70% | 883,963 |
| Jun 12, 2026 | 200.57 | 203.45 | 199.06 | 200.05 | 200.05 | 0.05% | 837,294 |
| Jun 11, 2026 | 195.49 | 201.18 | 194.24 | 199.96 | 199.96 | 2.94% | 914,781 |
| Jun 10, 2026 | 200.21 | 201.94 | 194.10 | 194.24 | 194.24 | -2.44% | 1,071,228 |
| Jun 9, 2026 | 195.51 | 199.63 | 193.45 | 199.10 | 199.10 | 3.36% | 934,191 |
| Jun 8, 2026 | 197.25 | 198.70 | 192.18 | 192.62 | 192.62 | -1.39% | 1,162,350 |
| Jun 5, 2026 | 196.45 | 200.66 | 195.14 | 195.34 | 195.34 | -0.57% | 880,438 |
| Jun 4, 2026 | 198.00 | 199.90 | 196.35 | 196.45 | 196.45 | 0.25% | 719,127 |
| Jun 3, 2026 | 187.69 | 196.51 | 187.48 | 195.96 | 195.96 | 3.78% | 891,787 |
| Jun 2, 2026 | 190.09 | 190.58 | 184.90 | 188.83 | 188.83 | -1.77% | 1,098,098 |
| Jun 1, 2026 | 194.50 | 195.28 | 191.67 | 192.23 | 192.23 | -1.92% | 841,499 |
| May 29, 2026 | 195.55 | 198.46 | 195.11 | 196.00 | 196.00 | -0.20% | 1,905,488 |
| May 28, 2026 | 196.97 | 198.00 | 194.50 | 196.39 | 196.39 | -0.29% | 556,331 |