Biogen Inc. (BCBA:BIIB)
21,640
+200 (0.93%)
At close: Feb 27, 2026
Biogen Stock Price History
Historical Data
| Date | Open | High | Low | Close | Adj. Close | Change | Volume |
|---|---|---|---|---|---|---|---|
| Feb 27, 2026 | 21,120.00 | 21,910.00 | 21,120.00 | 21,640.00 | 21,640.00 | 0.93% | 390 |
| Feb 26, 2026 | 21,650.00 | 21,650.00 | 21,200.00 | 21,440.00 | 21,440.00 | -0.23% | 192 |
| Feb 25, 2026 | 21,910.00 | 21,930.00 | 21,360.00 | 21,490.00 | 21,490.00 | -1.06% | 553 |
| Feb 24, 2026 | 21,760.00 | 22,250.00 | 21,700.00 | 21,720.00 | 21,720.00 | 0.14% | 179 |
| Feb 23, 2026 | 21,000.00 | 21,760.00 | 20,820.00 | 21,690.00 | 21,690.00 | 2.02% | 3,897 |
| Feb 20, 2026 | 21,100.00 | 21,540.00 | 21,000.00 | 21,260.00 | 21,260.00 | -0.42% | 565 |
| Feb 19, 2026 | 21,270.00 | 21,700.00 | 21,270.00 | 21,350.00 | 21,350.00 | -1.97% | 14,623 |
| Feb 18, 2026 | 22,470.00 | 22,470.00 | 21,710.00 | 21,780.00 | 21,780.00 | -1.76% | 95 |
| Feb 13, 2026 | 21,300.00 | 23,000.00 | 21,300.00 | 22,170.00 | 22,170.00 | 1.05% | 354 |
| Feb 12, 2026 | 20,600.00 | 22,140.00 | 20,600.00 | 21,940.00 | 21,940.00 | 1.29% | 389 |
| Feb 11, 2026 | 21,100.00 | 22,080.00 | 20,940.00 | 21,660.00 | 21,660.00 | -0.18% | 849 |
| Feb 10, 2026 | 22,230.00 | 22,230.00 | 21,640.00 | 21,700.00 | 21,700.00 | -2.69% | 529 |
| Feb 9, 2026 | 23,100.00 | 23,100.00 | 22,120.00 | 22,300.00 | 22,300.00 | -3.21% | 12,591 |
| Feb 6, 2026 | 22,040.00 | 23,150.00 | 21,670.00 | 23,040.00 | 23,040.00 | 7.61% | 8,898 |
| Feb 5, 2026 | 21,370.00 | 21,700.00 | 20,780.00 | 21,410.00 | 21,410.00 | 0.23% | 3,734 |
| Feb 4, 2026 | 20,970.00 | 21,420.00 | 20,150.00 | 21,360.00 | 21,360.00 | 4.30% | 15,898 |
| Feb 3, 2026 | 20,050.00 | 20,820.00 | 19,650.00 | 20,480.00 | 20,480.00 | 0.10% | 624 |
| Feb 2, 2026 | 20,900.00 | 20,910.00 | 20,020.00 | 20,460.00 | 20,460.00 | -0.63% | 473 |
| Jan 30, 2026 | 20,440.00 | 20,660.00 | 20,350.00 | 20,590.00 | 20,590.00 | 0.64% | 1,009 |
| Jan 29, 2026 | 19,920.00 | 20,520.00 | 19,920.00 | 20,460.00 | 20,460.00 | 1.99% | 258 |
| Jan 28, 2026 | 20,670.00 | 20,670.00 | 19,820.00 | 20,060.00 | 20,060.00 | -0.69% | 487 |
| Jan 27, 2026 | 20,440.00 | 20,440.00 | 20,130.00 | 20,200.00 | 20,200.00 | 0.50% | 3,500 |
| Jan 26, 2026 | 19,980.00 | 20,300.00 | 19,830.00 | 20,100.00 | 20,100.00 | 0.60% | 1,304 |
| Jan 23, 2026 | 20,050.00 | 20,200.00 | 19,700.00 | 19,980.00 | 19,980.00 | -0.45% | 1,714 |
| Jan 22, 2026 | 20,000.00 | 20,290.00 | 19,890.00 | 20,070.00 | 20,070.00 | 0.25% | 4,630 |
| Jan 21, 2026 | 19,740.00 | 20,040.00 | 19,620.00 | 20,020.00 | 20,020.00 | 4.00% | 271 |
| Jan 20, 2026 | 18,890.00 | 19,260.00 | 18,890.00 | 19,250.00 | 19,250.00 | 3.22% | 563 |
| Jan 19, 2026 | 20,000.00 | 20,000.00 | 18,640.00 | 18,650.00 | 18,650.00 | -2.76% | 132 |
| Jan 16, 2026 | 19,540.00 | 19,760.00 | 19,140.00 | 19,180.00 | 19,180.00 | -2.69% | 1,310 |
| Jan 15, 2026 | 19,990.00 | 19,990.00 | 19,450.00 | 19,710.00 | 19,710.00 | -1.35% | 813 |
| Jan 14, 2026 | 20,780.00 | 20,780.00 | 19,550.00 | 19,980.00 | 19,980.00 | -5.17% | 1,496 |
| Jan 13, 2026 | 21,760.00 | 21,760.00 | 21,070.00 | 21,070.00 | 21,070.00 | -3.04% | 489 |
| Jan 12, 2026 | 22,210.00 | 22,350.00 | 21,500.00 | 21,730.00 | 21,730.00 | -1.45% | 358 |
| Jan 9, 2026 | 21,810.00 | 22,350.00 | 21,810.00 | 22,050.00 | 22,050.00 | 1.89% | 936 |
| Jan 8, 2026 | 22,220.00 | 22,220.00 | 21,630.00 | 21,640.00 | 21,640.00 | -0.46% | 728 |
| Jan 7, 2026 | 21,610.00 | 22,040.00 | 21,410.00 | 21,740.00 | 21,740.00 | 1.54% | 1,063 |
| Jan 6, 2026 | 20,460.00 | 21,450.00 | 20,460.00 | 21,410.00 | 21,410.00 | 3.73% | 728 |
| Jan 5, 2026 | 21,040.00 | 21,120.00 | 20,150.00 | 20,640.00 | 20,640.00 | -1.71% | 1,147 |
| Jan 2, 2026 | 20,680.00 | 21,000.00 | 20,580.00 | 21,000.00 | 21,000.00 | 1.25% | 586 |
| Dec 30, 2025 | 20,790.00 | 20,850.00 | 20,680.00 | 20,740.00 | 20,740.00 | -0.34% | 778 |
| Dec 29, 2025 | 20,200.00 | 20,990.00 | 20,200.00 | 20,810.00 | 20,810.00 | 2.61% | 1,504 |
| Dec 26, 2025 | 20,000.00 | 20,500.00 | 19,820.00 | 20,280.00 | 20,280.00 | -2.12% | 59 |
| Dec 24, 2025 | 20,000.00 | 20,840.00 | 20,000.00 | 20,720.00 | 20,720.00 | 1.32% | 50 |
| Dec 23, 2025 | 21,050.00 | 21,050.00 | 20,450.00 | 20,450.00 | 20,450.00 | -1.59% | 217 |
| Dec 22, 2025 | 20,690.00 | 21,010.00 | 20,690.00 | 20,780.00 | 20,780.00 | -0.86% | 427 |
| Dec 19, 2025 | 19,970.00 | 20,990.00 | 19,970.00 | 20,960.00 | 20,960.00 | 3.46% | 900 |
| Dec 18, 2025 | 20,310.00 | 20,700.00 | 20,110.00 | 20,260.00 | 20,260.00 | -1.22% | 385 |
| Dec 17, 2025 | 20,660.00 | 20,660.00 | 20,200.00 | 20,510.00 | 20,510.00 | 1.23% | 153 |
| Dec 16, 2025 | 20,440.00 | 20,460.00 | 20,080.00 | 20,260.00 | 20,260.00 | -1.22% | 883 |
| Dec 15, 2025 | 20,400.00 | 20,510.00 | 19,930.00 | 20,510.00 | 20,510.00 | 0.79% | 865 |