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215.50
1.62%
-3.55
Biogen Inc Stock (BIIB) Price History
The historical daily chart and data for Biogen Inc stock (BIIB), show that the latest closing stock price as of September 18, 2026, is $215.50.
- Biogen Inc all-time high stock price is $480.18, occurred on March 20, 2015.
- The lowest Biogen Inc stock price recorded was $0.00 on November 06, 2020. Since then, Biogen Inc's stock price has risen over to $215.50 now.
- The 52-week high stock price for BIIB is $225.80, representing a 4.78% increase from the current share price, occurred on September 03, 2026.
- The 52-week low stock price for BIIB is $135.39, indicating a -37.17% decrease from the current share price, occurred on September 29, 2025.
- The closing price of Biogen Inc (BIIB) stock in the beginning of 2025 was $244.12. The stock closed the year at $276.92, a gain of over 13.44% for the year.
The table below shows more information about BIIB historical price data:
Daily
Weekly
Monthly
7D
30D
60D
YTD
1Y
| Date | High | Low | High - Low | Volume | % Change |
|---|---|---|---|---|---|
| Sep 18, 2026 | $220.2 | $215.3 | $4.91 | 2,634,718.0 | -1.62% |
| Sep 17, 2026 | $219.4 | $215.3 | $4.08 | 836,658.0 | +1.41% |
| Sep 16, 2026 | $218.3 | $214.8 | $3.48 | 606,473.0 | -0.07% |
| Sep 15, 2026 | $216.7 | $213.5 | $3.17 | 755,891.0 | -0.55% |
| Sep 14, 2026 | $222.2 | $215.6 | $6.69 | 629,904.0 | +0.10% |
| Sep 11, 2026 | $219.8 | $214.7 | $5.05 | 1,075,408.0 | +0.80% |
| Sep 10, 2026 | $216.7 | $208.9 | $7.77 | 928,511.0 | +2.23% |
| Sep 09, 2026 | $213.5 | $209.0 | $4.48 | 694,493.0 | -0.83% |
| Sep 08, 2026 | $217.3 | $210.5 | $6.74 | 617,381.0 | -3.77% |
| Sep 04, 2026 | $223.8 | $219.8 | $4.00 | 464,803.0 | -1.64% |
| Sep 03, 2026 | $225.8 | $221.2 | $4.57 | 549,717.0 | +0.83% |
| Sep 02, 2026 | $225.6 | $217.0 | $8.62 | 1,268,017.0 | +3.07% |
| Sep 01, 2026 | $219.3 | $213.6 | $5.70 | 742,045.0 | -0.28% |
| Aug 31, 2026 | $218.9 | $213.6 | $5.31 | 808,891.0 | -0.85% |
| Aug 28, 2026 | $222.0 | $216.8 | $5.22 | 517,363.0 | -1.35% |
| Aug 27, 2026 | $222.1 | $217.5 | $4.58 | 497,282.0 | +0.19% |
| Aug 26, 2026 | $222.0 | $218.7 | $3.31 | 647,120.0 | +0.14% |
| Aug 25, 2026 | $222.8 | $218.0 | $4.85 | 495,415.0 | +1.21% |
| Aug 24, 2026 | $218.5 | $214.0 | $4.54 | 649,817.0 | +0.62% |
| Aug 21, 2026 | $219.1 | $215.0 | $4.12 | 722,347.0 | +1.13% |
Biogen Inc Stock (BIIB) Year by Year Price History
In this detailed analysis, we present a comprehensive overview of the price movements of Biogen Inc stock over the years. By exploring the year-by-year data, investors can gain valuable insights into the historical performance and volatility of BIIB shares. From significant milestones and fluctuations to notable trends, this in-depth examination of Biogen Inc stock price history provides a foundation for understanding how the company's stock has evolved over time.
Biogen Inc Stock (BIIB) Price History 2026
| Month | High | Low | High - Low | Volume | % Change |
|---|---|---|---|---|---|
| Sep, 2026 | $225.8 | $208.9 | $16.87 | 14,438,737.0 | -0.53% |
| Aug, 2026 | $222.8 | $199.6 | $23.27 | 15,950,377.0 | +6.79% |
| Jul, 2026 | $219.0 | $186.0 | $32.99 | 31,194,752.0 | -6.10% |
| Jun, 2026 | $219.7 | $184.9 | $34.82 | 23,888,640.0 | +10.23% |
| May, 2026 | $206.0 | $185.4 | $20.53 | 21,900,244.0 | +3.55% |
| Apr, 2026 | $196.0 | $168.6 | $27.34 | 28,429,736.0 | +3.25% |
| Mar, 2026 | $193.0 | $171.4 | $21.62 | 21,843,705.0 | -4.43% |
| Feb, 2026 | $202.4 | $176.2 | $26.22 | 27,527,998.0 | +6.63% |
| Jan, 2026 | $190.2 | $160.4 | $29.84 | 31,061,717.0 | +2.22% |
Biogen Inc Stock (BIIB) Price History 2025
| Month | High | Low | High - Low | Volume | % Change |
|---|---|---|---|---|---|
| Dec, 2025 | $183.1 | $168.6 | $14.59 | 48,124,565.0 | -3.12% |
| Nov, 2025 | $185.2 | $148.5 | $36.66 | 38,224,910.0 | +18.03% |
| Oct, 2025 | $160.2 | $138.0 | $22.20 | 40,411,606.0 | +10.13% |
| Sep, 2025 | $150.3 | $133.5 | $16.75 | 35,274,516.0 | +5.94% |
| Aug, 2025 | $142.3 | $124.6 | $17.76 | 30,523,212.0 | +3.30% |
| Jul, 2025 | $137.8 | $121.0 | $16.79 | 28,738,569.0 | +1.92% |
| Jun, 2025 | $136.8 | $123.2 | $13.63 | 26,406,033.0 | -3.24% |
| May, 2025 | $132.9 | $115.2 | $17.69 | 36,993,413.0 | +7.19% |
| Apr, 2025 | $137.3 | $110.0 | $27.28 | 36,534,789.0 | -11.52% |
| Mar, 2025 | $157.1 | $134.7 | $22.38 | 33,198,418.0 | -2.60% |
| Feb, 2025 | $147.0 | $128.5 | $18.49 | 30,242,196.0 | -2.38% |
| Jan, 2025 | $156.4 | $139.7 | $16.66 | 24,484,755.0 | -5.88% |
Biogen Inc Stock (BIIB) Price History 2024
| Month | High | Low | High - Low | Volume | % Change |
|---|---|---|---|---|---|
| Dec, 2024 | $165.3 | $145.1 | $20.21 | 29,669,072.0 | -6.50% |
| Nov, 2024 | $179.2 | $153.6 | $25.58 | 33,387,733.0 | -7.68% |
| Oct, 2024 | $195.0 | $173.9 | $21.12 | 27,655,891.0 | -10.24% |
| Sep, 2024 | $206.7 | $188.8 | $17.92 | 21,324,270.0 | -5.33% |
| Aug, 2024 | $219.4 | $196.9 | $22.54 | 19,019,790.0 | -3.96% |
| Jul, 2024 | $238.0 | $209.8 | $28.25 | 21,425,395.0 | -8.03% |
| Jun, 2024 | $237.5 | $220.0 | $17.52 | 20,317,487.0 | +3.06% |
| May, 2024 | $236.9 | $210.3 | $26.57 | 21,783,068.0 | +4.71% |
| Apr, 2024 | $218.9 | $189.4 | $29.42 | 28,374,556.0 | -0.38% |
| Mar, 2024 | $230.2 | $211.0 | $19.21 | 26,236,771.0 | -0.63% |
| Feb, 2024 | $249.3 | $215.7 | $33.65 | 25,206,719.0 | -12.03% |
| Jan, 2024 | $268.3 | $240.8 | $27.47 | 20,166,869.0 | -4.68% |
0.07%
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