Biogen Inc. (BCBA:BIIB)
28,060
+320 (1.15%)
At close: Sep 23, 2026
BCBA:BIIB Stock Price History
| Date | Open | High | Low | Close | Adj. Close | Change | Volume |
|---|---|---|---|---|---|---|---|
| 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 |
| Aug 21, 2026 | 26,240.00 | 26,740.00 | 26,240.00 | 26,540.00 | 26,540.00 | 1.38% | 3,078 |
| Aug 20, 2026 | 26,740.00 | 26,900.00 | 26,100.00 | 26,180.00 | 26,180.00 | -2.60% | 298 |
| Aug 19, 2026 | 26,080.00 | 26,940.00 | 26,080.00 | 26,880.00 | 26,880.00 | 3.78% | 1,021 |
| Aug 18, 2026 | 25,760.00 | 26,020.00 | 25,660.00 | 25,900.00 | 25,900.00 | 2.13% | 1,964 |
| Aug 14, 2026 | 25,360.00 | 25,580.00 | 25,360.00 | 25,360.00 | 25,360.00 | -1.40% | 59 |
| Aug 13, 2026 | 25,720.00 | 25,780.00 | 25,600.00 | 25,720.00 | 25,720.00 | 1.02% | 118 |
| Aug 12, 2026 | 24,700.00 | 25,500.00 | 24,700.00 | 25,460.00 | 25,460.00 | 2.66% | 535 |
| Aug 11, 2026 | 24,990.00 | 25,100.00 | 24,800.00 | 24,800.00 | 24,800.00 | -1.27% | 534 |
| Aug 10, 2026 | 25,300.00 | 25,360.00 | 25,120.00 | 25,120.00 | 25,120.00 | -0.32% | 315 |
| Aug 7, 2026 | 24,830.00 | 25,220.00 | 24,830.00 | 25,200.00 | 25,200.00 | 0.56% | 329 |
| Aug 6, 2026 | 25,320.00 | 25,320.00 | 24,660.00 | 25,060.00 | 25,060.00 | 0.36% | 109 |
| Aug 5, 2026 | 25,880.00 | 25,880.00 | 24,970.00 | 24,970.00 | 24,970.00 | -2.00% | 263 |
| Aug 4, 2026 | 24,600.00 | 25,500.00 | 24,600.00 | 25,480.00 | 25,480.00 | 3.92% | 323 |
| Aug 3, 2026 | 24,470.00 | 24,740.00 | 24,230.00 | 24,520.00 | 24,520.00 | -0.45% | 702 |
| Jul 31, 2026 | 24,880.00 | 24,890.00 | 24,620.00 | 24,630.00 | 24,630.00 | -1.32% | 88 |
| Jul 30, 2026 | 25,080.00 | 25,360.00 | 24,720.00 | 24,960.00 | 24,960.00 | -1.89% | 1,317 |
| Jul 29, 2026 | 26,040.00 | 26,820.00 | 25,360.00 | 25,440.00 | 25,440.00 | 0.24% | 5,263 |
| Jul 28, 2026 | 24,870.00 | 25,480.00 | 24,770.00 | 25,380.00 | 25,380.00 | 3.30% | 908 |
| Jul 27, 2026 | 24,750.00 | 25,080.00 | 24,540.00 | 24,570.00 | 24,570.00 | -1.48% | 101 |
| Jul 24, 2026 | 24,730.00 | 24,950.00 | 24,730.00 | 24,940.00 | 24,940.00 | 1.80% | 68 |
| Jul 23, 2026 | 24,110.00 | 24,670.00 | 23,940.00 | 24,500.00 | 24,500.00 | 2.60% | 383 |
| Jul 22, 2026 | 24,350.00 | 24,480.00 | 23,880.00 | 23,880.00 | 23,880.00 | -2.89% | 134 |
| Jul 21, 2026 | 24,210.00 | 24,640.00 | 24,200.00 | 24,590.00 | 24,590.00 | 1.74% | 378 |
| Jul 20, 2026 | 24,660.00 | 24,660.00 | 24,170.00 | 24,170.00 | 24,170.00 | -2.89% | 201 |
| Jul 17, 2026 | 25,920.00 | 26,040.00 | 24,630.00 | 24,890.00 | 24,890.00 | -1.15% | 1,381 |
| Jul 16, 2026 | 23,550.00 | 25,260.00 | 23,550.00 | 25,180.00 | 25,180.00 | 6.16% | 8,356 |
| Jul 15, 2026 | 23,000.00 | 23,790.00 | 22,380.00 | 23,720.00 | 23,720.00 | 3.09% | 356 |