Biogen Inc. (BCBA:BIIB)
31,800
-660 (-2.03%)
At close: Nov 2, 2026
BCBA:BIIB Stock Price History
| Date | Open | High | Low | Close | Adj. Close | Change | Volume |
|---|---|---|---|---|---|---|---|
| Nov 2, 2026 | 32,680.00 | 32,680.00 | 31,640.00 | 31,800.00 | 31,800.00 | -2.03% | 82 |
| Oct 30, 2026 | 32,420.00 | 32,580.00 | 32,100.00 | 32,460.00 | 32,460.00 | 2.40% | 1,842 |
| Oct 29, 2026 | 31,880.00 | 32,420.00 | 31,700.00 | 31,700.00 | 31,700.00 | 1.67% | 828 |
| Oct 28, 2026 | 31,840.00 | 32,880.00 | 31,000.00 | 31,180.00 | 31,180.00 | -2.68% | 3,802 |
| Oct 27, 2026 | 32,300.00 | 32,320.00 | 31,880.00 | 32,040.00 | 32,040.00 | -1.29% | 617 |
| Oct 26, 2026 | 32,400.00 | 32,560.00 | 32,160.00 | 32,460.00 | 32,460.00 | 1.95% | 1,264 |
| Oct 23, 2026 | 31,320.00 | 31,980.00 | 31,320.00 | 31,840.00 | 31,840.00 | -0.25% | 790 |
| Oct 22, 2026 | 30,500.00 | 32,180.00 | 30,000.00 | 31,920.00 | 31,920.00 | 5.42% | 1,118 |
| Oct 21, 2026 | 30,260.00 | 30,340.00 | 30,180.00 | 30,280.00 | 30,280.00 | -0.39% | 80 |
| Oct 20, 2026 | 30,000.00 | 30,600.00 | 29,980.00 | 30,400.00 | 30,400.00 | 4.40% | 1,069 |
| Oct 19, 2026 | 28,820.00 | 29,500.00 | 28,820.00 | 29,120.00 | 29,120.00 | 0.69% | 258 |
| Oct 16, 2026 | 29,780.00 | 29,780.00 | 28,920.00 | 28,920.00 | 28,920.00 | -1.03% | 299 |
| Oct 15, 2026 | 29,940.00 | 29,940.00 | 29,200.00 | 29,220.00 | 29,220.00 | 1.39% | 377 |
| Oct 14, 2026 | 28,580.00 | 29,040.00 | 28,480.00 | 28,820.00 | 28,820.00 | 1.69% | 886 |
| Oct 13, 2026 | 28,300.00 | 28,500.00 | 28,140.00 | 28,340.00 | 28,340.00 | 1.43% | 693 |
| Oct 9, 2026 | 27,360.00 | 28,060.00 | 27,300.00 | 27,940.00 | 27,940.00 | 3.40% | 94 |
| Oct 8, 2026 | 27,320.00 | 27,460.00 | 26,800.00 | 27,020.00 | 27,020.00 | -1.89% | 109 |
| Oct 7, 2026 | 27,980.00 | 28,120.00 | 27,520.00 | 27,540.00 | 27,540.00 | -0.36% | 79 |
| Oct 6, 2026 | 27,940.00 | 27,940.00 | 27,240.00 | 27,640.00 | 27,640.00 | 0.14% | 638 |
| Oct 5, 2026 | 27,260.00 | 27,600.00 | 26,980.00 | 27,600.00 | 27,600.00 | 0.58% | 233 |
| Oct 2, 2026 | 27,780.00 | 27,780.00 | 27,440.00 | 27,440.00 | 27,440.00 | -1.22% | 510 |
| Oct 1, 2026 | 28,240.00 | 28,240.00 | 27,760.00 | 27,780.00 | 27,780.00 | -0.93% | 106 |
| Sep 30, 2026 | 28,320.00 | 28,320.00 | 27,960.00 | 28,040.00 | 28,040.00 | -0.43% | 77 |
| Sep 29, 2026 | 28,400.00 | 28,400.00 | 28,020.00 | 28,160.00 | 28,160.00 | -1.47% | 75 |
| Sep 28, 2026 | 28,360.00 | 28,740.00 | 28,360.00 | 28,580.00 | 28,580.00 | 0.99% | 435 |
| Sep 25, 2026 | 28,020.00 | 28,440.00 | 27,940.00 | 28,300.00 | 28,300.00 | 0.64% | 146 |
| Sep 24, 2026 | 27,740.00 | 28,260.00 | 27,740.00 | 28,120.00 | 28,120.00 | 0.29% | 353 |
| Sep 23, 2026 | 27,880.00 | 28,060.00 | 27,420.00 | 28,040.00 | 28,040.00 | 1.08% | 415 |
| Sep 22, 2026 | 26,900.00 | 27,940.00 | 26,900.00 | 27,740.00 | 27,740.00 | 3.20% | 1,096 |
| Sep 21, 2026 | 26,400.00 | 27,240.00 | 26,400.00 | 26,880.00 | 26,880.00 | 0.67% | 105 |
| Sep 18, 2026 | 27,000.00 | 27,000.00 | 26,440.00 | 26,700.00 | 26,700.00 | -0.37% | 1,591 |
| Sep 17, 2026 | 26,680.00 | 26,860.00 | 26,560.00 | 26,800.00 | 26,800.00 | 1.13% | 82 |
| Sep 16, 2026 | 26,660.00 | 26,800.00 | 26,480.00 | 26,500.00 | 26,500.00 | 0.30% | 31 |
| Sep 15, 2026 | 26,320.00 | 27,500.00 | 26,240.00 | 26,420.00 | 26,420.00 | -0.83% | 3,276 |
| Sep 14, 2026 | 26,880.00 | 26,900.00 | 26,580.00 | 26,640.00 | 26,640.00 | -0.15% | 109 |
| Sep 11, 2026 | 26,560.00 | 26,840.00 | 26,520.00 | 26,680.00 | 26,680.00 | 0.76% | 218 |
| Sep 10, 2026 | 26,420.00 | 26,580.00 | 26,180.00 | 26,480.00 | 26,480.00 | 2.80% | 1,686 |
| Sep 9, 2026 | 25,500.00 | 26,180.00 | 25,000.00 | 25,760.00 | 25,760.00 | -0.85% | 1,769 |
| Sep 8, 2026 | 26,540.00 | 26,540.00 | 25,880.00 | 25,980.00 | 25,980.00 | -2.26% | 553 |
| Sep 7, 2026 | 26,780.00 | 27,500.00 | 26,560.00 | 26,580.00 | 26,580.00 | -1.04% | 73 |
| Sep 4, 2026 | 27,520.00 | 27,520.00 | 26,840.00 | 26,860.00 | 26,860.00 | -2.33% | 142 |
| Sep 3, 2026 | 27,600.00 | 27,600.00 | 27,200.00 | 27,500.00 | 27,500.00 | 1.03% | 775 |
| Sep 2, 2026 | 26,340.00 | 27,600.00 | 26,340.00 | 27,220.00 | 27,220.00 | 3.26% | 1,121 |
| Sep 1, 2026 | 26,800.00 | 26,860.00 | 26,300.00 | 26,360.00 | 26,360.00 | -0.83% | 474 |
| Aug 31, 2026 | 26,860.00 | 26,940.00 | 26,580.00 | 26,580.00 | 26,580.00 | -1.56% | 551 |
| Aug 28, 2026 | 27,300.00 | 27,340.00 | 26,760.00 | 27,000.00 | 27,000.00 | -0.88% | 1,633 |
| Aug 27, 2026 | 27,180.00 | 27,360.00 | 26,760.00 | 27,240.00 | 27,240.00 | -0.51% | 506 |
| Aug 26, 2026 | 27,100.00 | 27,400.00 | 27,100.00 | 27,380.00 | 27,380.00 | 0.51% | 1,391 |
| Aug 25, 2026 | 26,980.00 | 27,320.00 | 26,900.00 | 27,240.00 | 27,240.00 | 1.41% | 1,658 |
| Aug 24, 2026 | 26,580.00 | 26,900.00 | 26,300.00 | 26,860.00 | 26,860.00 | 1.21% | 699 |