Biogen Inc. (BCBA:BIIB)
22,110
+470 (2.17%)
At close: May 22, 2026
BCBA:BIIB Stock Price History
Historical Data
| Date | Open | High | Low | Close | Adj. Close | Change | Volume |
|---|---|---|---|---|---|---|---|
| May 22, 2026 | 21,640.00 | 22,200.00 | 21,640.00 | 22,050.00 | 22,050.00 | 1.89% | 280 |
| May 21, 2026 | 21,580.00 | 21,670.00 | 21,310.00 | 21,640.00 | 21,640.00 | 0.89% | 60 |
| May 20, 2026 | 22,040.00 | 22,040.00 | 21,400.00 | 21,450.00 | 21,450.00 | -1.88% | 692 |
| May 19, 2026 | 21,790.00 | 22,030.00 | 21,790.00 | 21,860.00 | 21,860.00 | -0.18% | 567 |
| May 18, 2026 | 21,980.00 | 22,090.00 | 21,600.00 | 21,900.00 | 21,900.00 | -1.17% | 234 |
| May 15, 2026 | 22,170.00 | 22,170.00 | 21,870.00 | 22,160.00 | 22,160.00 | 1.51% | 429 |
| May 14, 2026 | 23,410.00 | 23,410.00 | 21,640.00 | 21,830.00 | 21,830.00 | -6.63% | 3,781 |
| May 13, 2026 | 22,510.00 | 23,420.00 | 22,510.00 | 23,380.00 | 23,380.00 | 3.59% | 202 |
| May 12, 2026 | 22,720.00 | 22,960.00 | 22,390.00 | 22,570.00 | 22,570.00 | 0.09% | 1,723 |
| May 11, 2026 | 22,120.00 | 22,880.00 | 22,120.00 | 22,550.00 | 22,550.00 | 2.17% | 1,560 |
| May 8, 2026 | 22,030.00 | 22,390.00 | 21,800.00 | 22,070.00 | 22,070.00 | 1.19% | 1,768 |
| May 7, 2026 | 21,590.00 | 21,880.00 | 21,580.00 | 21,810.00 | 21,810.00 | 0.51% | 92 |
| May 6, 2026 | 21,790.00 | 21,790.00 | 21,440.00 | 21,700.00 | 21,700.00 | 0.18% | 1,236 |
| May 5, 2026 | 21,780.00 | 21,780.00 | 21,320.00 | 21,660.00 | 21,660.00 | 0.84% | 1,168 |
| May 4, 2026 | 21,500.00 | 21,580.00 | 21,230.00 | 21,480.00 | 21,480.00 | -1.56% | 297 |
| Apr 30, 2026 | 22,320.00 | 22,320.00 | 21,580.00 | 21,820.00 | 21,820.00 | -2.06% | 575 |
| Apr 29, 2026 | 21,050.00 | 22,490.00 | 21,000.00 | 22,280.00 | 22,280.00 | 5.44% | 4,985 |
| Apr 28, 2026 | 21,380.00 | 21,380.00 | 21,060.00 | 21,130.00 | 21,130.00 | 0.38% | 141 |
| Apr 27, 2026 | 21,220.00 | 21,430.00 | 20,990.00 | 21,050.00 | 21,050.00 | -0.57% | 534 |
| Apr 24, 2026 | 21,070.00 | 21,180.00 | 21,030.00 | 21,170.00 | 21,170.00 | -0.66% | 700 |
| Apr 23, 2026 | 21,380.00 | 21,490.00 | 21,310.00 | 21,310.00 | 21,310.00 | -1.43% | 290 |
| Apr 22, 2026 | 21,160.00 | 21,640.00 | 21,160.00 | 21,620.00 | 21,620.00 | 2.56% | 338 |
| Apr 21, 2026 | 20,700.00 | 21,220.00 | 20,700.00 | 21,080.00 | 21,080.00 | 1.79% | 827 |
| Apr 20, 2026 | 20,310.00 | 20,810.00 | 20,270.00 | 20,710.00 | 20,710.00 | 3.86% | 1,066 |
| Apr 17, 2026 | 19,700.00 | 20,000.00 | 19,660.00 | 19,940.00 | 19,940.00 | 1.68% | 381 |
| Apr 16, 2026 | 20,010.00 | 20,010.00 | 19,540.00 | 19,610.00 | 19,610.00 | -3.06% | 1,544 |
| Apr 15, 2026 | 20,220.00 | 20,300.00 | 20,100.00 | 20,230.00 | 20,230.00 | -0.15% | 450 |
| Apr 14, 2026 | 20,040.00 | 20,380.00 | 20,040.00 | 20,260.00 | 20,260.00 | 2.22% | 546 |
| Apr 13, 2026 | 19,430.00 | 19,830.00 | 19,430.00 | 19,820.00 | 19,820.00 | 1.28% | 504 |
| Apr 10, 2026 | 19,980.00 | 20,100.00 | 19,570.00 | 19,570.00 | 19,570.00 | -2.49% | 477 |
| Apr 9, 2026 | 20,280.00 | 20,280.00 | 19,940.00 | 20,070.00 | 20,070.00 | -1.57% | 105 |
| Apr 8, 2026 | 20,340.00 | 20,490.00 | 20,040.00 | 20,390.00 | 20,390.00 | 1.65% | 148 |
| Apr 7, 2026 | 19,750.00 | 20,060.00 | 19,560.00 | 20,060.00 | 20,060.00 | 2.09% | 1,428 |
| Apr 6, 2026 | 20,070.00 | 20,230.00 | 19,270.00 | 19,650.00 | 19,650.00 | -6.21% | 1,445 |
| Apr 1, 2026 | 20,900.00 | 20,970.00 | 20,800.00 | 20,950.00 | 20,950.00 | 0.82% | 1,101 |
| Mar 31, 2026 | 20,150.00 | 20,840.00 | 20,040.00 | 20,780.00 | 20,780.00 | -2.76% | 2,120 |
| Mar 30, 2026 | 21,100.00 | 21,580.00 | 21,100.00 | 21,370.00 | 21,370.00 | 2.69% | 172 |
| Mar 27, 2026 | 21,140.00 | 21,200.00 | 20,810.00 | 20,810.00 | 20,810.00 | -1.93% | 101 |
| Mar 26, 2026 | 20,980.00 | 21,430.00 | 20,980.00 | 21,220.00 | 21,220.00 | 0.38% | 5,846 |
| Mar 25, 2026 | 20,930.00 | 21,160.00 | 20,900.00 | 21,140.00 | 21,140.00 | 2.42% | 260 |
| Mar 23, 2026 | 20,680.00 | 20,750.00 | 20,600.00 | 20,640.00 | 20,640.00 | 0.93% | 117 |
| Mar 20, 2026 | 20,630.00 | 20,630.00 | 20,450.00 | 20,450.00 | 20,450.00 | -1.30% | 15 |
| Mar 19, 2026 | 20,740.00 | 20,860.00 | 20,510.00 | 20,720.00 | 20,720.00 | 0.48% | 1,347 |
| Mar 18, 2026 | 20,670.00 | 20,690.00 | 20,470.00 | 20,620.00 | 20,620.00 | -1.39% | 150 |
| Mar 17, 2026 | 20,740.00 | 21,030.00 | 20,740.00 | 20,910.00 | 20,910.00 | 0.72% | 906 |
| Mar 16, 2026 | 20,580.00 | 20,790.00 | 20,510.00 | 20,760.00 | 20,760.00 | 0.78% | 153 |
| Mar 13, 2026 | 20,650.00 | 20,910.00 | 20,520.00 | 20,600.00 | 20,600.00 | -0.43% | 1,722 |
| Mar 12, 2026 | 20,880.00 | 20,980.00 | 20,670.00 | 20,690.00 | 20,690.00 | -2.86% | 102 |
| Mar 11, 2026 | 21,300.00 | 21,660.00 | 21,250.00 | 21,300.00 | 21,300.00 | 0.80% | 119 |
| Mar 10, 2026 | 21,460.00 | 21,520.00 | 21,130.00 | 21,130.00 | 21,130.00 | -0.56% | 428 |