Nasdaq · Common stock
Biogen (BIIB)
$252.26 +$1.57 (+0.63%)
- Day’s range
- $249.61–$254.11
- Volume
- 958,820
BIIB price history
BIIB closed at $252.26 on Oct. 26, 2026. Over the past year, its daily close ranged from $147.86 on Oct. 29, 2025 to $253.84 on Oct. 22, 2026.
Data table: BIIB daily closes, the past year
| Date | Close |
|---|---|
| Oct. 26, 2026 | $252.26 |
| Oct. 23, 2026 | $250.69 |
| Oct. 22, 2026 | $253.84 |
| Oct. 21, 2026 | $240.98 |
| Oct. 20, 2026 | $243.10 |
| Oct. 19, 2026 | $233.48 |
| Oct. 16, 2026 | $232.65 |
| Oct. 15, 2026 | $235.35 |
| Oct. 14, 2026 | $232.83 |
| Oct. 13, 2026 | $228.90 |
| Oct. 12, 2026 | $229.41 |
| Oct. 9, 2026 | $225.71 |
| Oct. 8, 2026 | $218.43 |
| Oct. 7, 2026 | $222.15 |
| Oct. 6, 2026 | $222.89 |
| Oct. 5, 2026 | $223.59 |
| Oct. 2, 2026 | $219.88 |
| Oct. 1, 2026 | $222.82 |
| Sept. 30, 2026 | $225.88 |
| Sept. 29, 2026 | $227.07 |
| Sept. 28, 2026 | $228.69 |
| Sept. 25, 2026 | $227.60 |
| Sept. 24, 2026 | $226.36 |
| Sept. 23, 2026 | $227.53 |
| Sept. 22, 2026 | $225.36 |
| Sept. 21, 2026 | $219.07 |
| Sept. 18, 2026 | $215.50 |
| Sept. 17, 2026 | $219.05 |
| Sept. 16, 2026 | $216.01 |
| Sept. 15, 2026 | $216.17 |
| Sept. 14, 2026 | $217.36 |
| Sept. 11, 2026 | $217.15 |
| Sept. 10, 2026 | $215.43 |
| Sept. 9, 2026 | $210.73 |
| Sept. 8, 2026 | $212.50 |
| Sept. 4, 2026 | $220.83 |
| Sept. 3, 2026 | $224.51 |
| Sept. 2, 2026 | $222.67 |
| Sept. 1, 2026 | $216.04 |
| Aug. 31, 2026 | $216.65 |
| Aug. 28, 2026 | $218.50 |
| Aug. 27, 2026 | $221.50 |
| Aug. 26, 2026 | $221.07 |
| Aug. 25, 2026 | $220.77 |
| Aug. 24, 2026 | $218.12 |
| Aug. 21, 2026 | $216.78 |
| Aug. 20, 2026 | $214.35 |
| Aug. 19, 2026 | $221.56 |
| Aug. 18, 2026 | $212.55 |
| Aug. 17, 2026 | $209.15 |
| Aug. 14, 2026 | $209.83 |
| Aug. 13, 2026 | $210.65 |
| Aug. 12, 2026 | $208.87 |
| Aug. 11, 2026 | $203.89 |
| Aug. 10, 2026 | $207.13 |
| Aug. 7, 2026 | $207.94 |
| Aug. 6, 2026 | $206.28 |
| Aug. 5, 2026 | $206.63 |
| Aug. 4, 2026 | $208.45 |
| Aug. 3, 2026 | $201.82 |
| July 31, 2026 | $202.95 |
| July 30, 2026 | $207.93 |
| July 29, 2026 | $209.23 |
| July 28, 2026 | $205.61 |
| July 27, 2026 | $200.14 |
| July 24, 2026 | $202.19 |
| July 23, 2026 | $200.62 |
| July 22, 2026 | $197.74 |
| July 21, 2026 | $203.16 |
| July 20, 2026 | $199.95 |
| July 17, 2026 | $205.99 |
| July 16, 2026 | $208.92 |
| July 15, 2026 | $197.24 |
| July 14, 2026 | $191.95 |
| July 13, 2026 | $209.03 |
| July 10, 2026 | $199.15 |
| July 9, 2026 | $198.91 |
| July 8, 2026 | $200.36 |
| July 7, 2026 | $205.70 |
| July 6, 2026 | $208.46 |
| July 2, 2026 | $216.12 |
| July 1, 2026 | $209.74 |
| June 30, 2026 | $216.06 |
| June 29, 2026 | $216.63 |
| June 26, 2026 | $216.03 |
| June 25, 2026 | $201.96 |
| June 24, 2026 | $199.59 |
| June 23, 2026 | $197.19 |
| June 22, 2026 | $199.71 |
| June 18, 2026 | $196.58 |
| June 17, 2026 | $198.67 |
| June 16, 2026 | $195.61 |
| June 15, 2026 | $198.64 |
| June 12, 2026 | $200.05 |
| June 11, 2026 | $199.96 |
| June 10, 2026 | $194.24 |
| June 9, 2026 | $199.10 |
| June 8, 2026 | $192.62 |
| June 5, 2026 | $195.34 |
| June 4, 2026 | $196.45 |
| June 3, 2026 | $195.96 |
| June 2, 2026 | $188.83 |
| June 1, 2026 | $192.23 |
| May 29, 2026 | $196.00 |
| May 28, 2026 | $196.39 |
| May 27, 2026 | $196.97 |
| May 26, 2026 | $193.08 |
| May 22, 2026 | $193.76 |
| May 21, 2026 | $189.47 |
| May 20, 2026 | $187.80 |
| May 19, 2026 | $190.56 |
| May 18, 2026 | $191.91 |
| May 15, 2026 | $192.95 |
| May 14, 2026 | $191.37 |
| May 13, 2026 | $204.53 |
| May 12, 2026 | $199.36 |
| May 11, 2026 | $197.95 |
| May 8, 2026 | $193.45 |
| May 7, 2026 | $191.38 |
| May 6, 2026 | $190.68 |
| May 5, 2026 | $189.13 |
| May 4, 2026 | $187.21 |
| May 1, 2026 | $187.06 |
| April 30, 2026 | $189.28 |
| April 29, 2026 | $194.38 |
| April 28, 2026 | $183.38 |
| April 27, 2026 | $180.67 |
| April 24, 2026 | $184.38 |
| April 23, 2026 | $187.88 |
| April 22, 2026 | $190.07 |
| April 21, 2026 | $185.95 |
| April 20, 2026 | $183.34 |
| April 17, 2026 | $177.35 |
| April 16, 2026 | $176.02 |
| April 15, 2026 | $180.54 |
| April 14, 2026 | $178.96 |
| April 13, 2026 | $176.37 |
| April 10, 2026 | $172.97 |
| April 9, 2026 | $177.11 |
| April 8, 2026 | $179.90 |
| April 7, 2026 | $175.61 |
| April 6, 2026 | $172.34 |
| April 2, 2026 | $177.34 |
| April 1, 2026 | $183.78 |
| March 31, 2026 | $183.33 |
| March 30, 2026 | $187.57 |
| March 27, 2026 | $183.84 |
| March 26, 2026 | $191.06 |
| March 25, 2026 | $189.18 |
| March 24, 2026 | $183.94 |
| March 23, 2026 | $183.64 |
| March 20, 2026 | $181.46 |
| March 19, 2026 | $183.41 |
| March 18, 2026 | $182.31 |
| March 17, 2026 | $185.29 |
| March 16, 2026 | $183.26 |
| March 13, 2026 | $181.55 |
| March 12, 2026 | $184.90 |
| March 11, 2026 | $190.48 |
| March 10, 2026 | $188.41 |
| March 9, 2026 | $188.24 |
| March 6, 2026 | $184.87 |
| March 5, 2026 | $188.08 |
| March 4, 2026 | $189.94 |
| March 3, 2026 | $184.02 |
| March 2, 2026 | $188.05 |
| Feb. 27, 2026 | $191.82 |
| Feb. 26, 2026 | $188.02 |
| Feb. 25, 2026 | $190.73 |
| Feb. 24, 2026 | $195.13 |
| Feb. 23, 2026 | $196.34 |
| Feb. 20, 2026 | $192.03 |
| Feb. 19, 2026 | $192.08 |
| Feb. 18, 2026 | $194.13 |
| Feb. 17, 2026 | $195.62 |
| Feb. 13, 2026 | $196.52 |
| Feb. 12, 2026 | $195.50 |
| Feb. 11, 2026 | $191.20 |
| Feb. 10, 2026 | $188.99 |
| Feb. 9, 2026 | $193.81 |
| Feb. 6, 2026 | $201.18 |
| Feb. 5, 2026 | $185.36 |
| Feb. 4, 2026 | $185.45 |
| Feb. 3, 2026 | $176.76 |
| Feb. 2, 2026 | $179.09 |
| Jan. 30, 2026 | $179.89 |
| Jan. 29, 2026 | $176.18 |
| Jan. 28, 2026 | $174.83 |
| Jan. 27, 2026 | $174.12 |
| Jan. 26, 2026 | $173.12 |
| Jan. 23, 2026 | $171.59 |
| Jan. 22, 2026 | $173.80 |
| Jan. 21, 2026 | $172.62 |
| Jan. 20, 2026 | $165.38 |
| Jan. 16, 2026 | $164.42 |
| Jan. 15, 2026 | $168.57 |
| Jan. 14, 2026 | $169.31 |
| Jan. 13, 2026 | $178.30 |
| Jan. 12, 2026 | $185.63 |
| Jan. 9, 2026 | $187.62 |
| Jan. 8, 2026 | $186.00 |
| Jan. 7, 2026 | $186.91 |
| Jan. 6, 2026 | $182.61 |
| Jan. 5, 2026 | $174.63 |
| Jan. 2, 2026 | $177.82 |
| Dec. 31, 2025 | $175.99 |
| Dec. 30, 2025 | $176.40 |
| Dec. 29, 2025 | $176.83 |
| Dec. 26, 2025 | $177.08 |
| Dec. 24, 2025 | $176.33 |
| Dec. 23, 2025 | $174.82 |
| Dec. 22, 2025 | $174.70 |
| Dec. 19, 2025 | $174.80 |
| Dec. 18, 2025 | $169.91 |
| Dec. 17, 2025 | $172.10 |
| Dec. 16, 2025 | $171.50 |
| Dec. 15, 2025 | $175.74 |
| Dec. 12, 2025 | $174.10 |
| Dec. 11, 2025 | $172.50 |
| Dec. 10, 2025 | $177.55 |
| Dec. 9, 2025 | $175.84 |
| Dec. 8, 2025 | $180.44 |
| Dec. 5, 2025 | $181.30 |
| Dec. 4, 2025 | $181.98 |
| Dec. 3, 2025 | $180.75 |
| Dec. 2, 2025 | $180.18 |
| Dec. 1, 2025 | $177.78 |
| Nov. 28, 2025 | $182.09 |
| Nov. 26, 2025 | $181.94 |
| Nov. 25, 2025 | $181.96 |
| Nov. 24, 2025 | $176.82 |
| Nov. 21, 2025 | $175.30 |
| Nov. 20, 2025 | $168.18 |
| Nov. 19, 2025 | $167.93 |
| Nov. 18, 2025 | $168.83 |
| Nov. 17, 2025 | $164.68 |
| Nov. 14, 2025 | $167.55 |
| Nov. 13, 2025 | $164.73 |
| Nov. 12, 2025 | $161.48 |
| Nov. 11, 2025 | $159.56 |
| Nov. 10, 2025 | $156.26 |
| Nov. 7, 2025 | $155.51 |
| Nov. 6, 2025 | $156.74 |
| Nov. 5, 2025 | $153.43 |
| Nov. 4, 2025 | $149.33 |
| Nov. 3, 2025 | $151.44 |
| Oct. 31, 2025 | $154.27 |
| Oct. 30, 2025 | $149.61 |
| Oct. 29, 2025 | $147.86 |
| Oct. 28, 2025 | $149.13 |
| Oct. 27, 2025 | $150.43 |
Key figures
- 52-week range
- $147.86–$253.84Low Oct. 29, 2025; high Oct. 22, 2026
- Average daily volume
- 1.0MPast 3 months
- Market value
- $37.27B
- Dividend yield
- —
- From 52-week high
- −0.62%
Price change
- 1 month
- +10.83%
- 3 months
- +24.76%
- Year to date
- +43.34%
- 1 year
- +68.30%
$1,000 a year ago
$1,000 put into BIIB at the close on Oct. 24, 2025 would be worth $1,683.
Price only, dividends not included.
What Wall Street says about BIIB
In the past 90 days, Wall Street firms published 20 rating or price-target actions on BIIB: 2 upgrades, 16 raised price targets and 2 lowered price targets.
| Action | Rating | |||
|---|---|---|---|---|
| B of A Securities | Raises target | Neutral | $219 to $244 | |
| TD Cowen | Raises target | Buy | $225 to $250 | |
| Wells Fargo | Raises target | Overweight | $250 to $310 | |
| JP Morgan | Upgrade | Neutral to Overweight | $210 to $300 | |
| UBS | Raises target | Buy | $240 to $270 | |
| RBC Capital | Cuts target | Outperform | $260 to $256 | |
| HSBC | Raises target | Reduce | $165 to $175 | |
| Piper Sandler | Raises target | Overweight | $225 to $245 | |
| RBC Capital | Raises target | Outperform | $240 to $260 | |
| Wolfe Research | Upgrade | Peer perform to Outperform | $300 | |
| Mizuho | Raises target | Outperform | $221 to $241 | |
| Citigroup | Raises target | Neutral | $200 to $215 | |
| Canaccord Genuity | Raises target | Buy | $245 to $248 | |
| HC Wainwright & Co. | Raises target | Buy | $237 to $251 | |
| Morgan Stanley | Raises target | Equal-weight | $222 to $231 | |
| RBC Capital | Cuts target | Outperform | $242 to $240 | |
| TD Cowen | Raises target | Buy | $215 to $225 | |
| UBS | Raises target | Buy | $225 to $240 | |
| Wedbush | Raises target | Neutral | $201 to $215 | |
| Barclays | Raises target | Equal-weight | $185 to $200 |
Ratings and price targets are the firms’ own opinions, reported as published.
Not investment advice.
About Biogen Inc. Common Stock
Biogen is an established biopharmaceutical company focused on treatments for neurodegenerative and rare diseases. Its declining multiple sclerosis franchise is its largest revenue generator and contributed 40% of total revenue in 2025. Biogen also generates significant revenue from its CD20 collaboration agreements with Roche (19% of total in 2025), which includes oncology drugs Rituxan and Gazyva and multiple sclerosis drug Ocrevus. Biogen's newer franchises include Spinraza (spinal muscular atrophy, with partner Ionis), Leqembi (Alzheimer's disease, collabroation revenue from its partner Eisai), Skyclarys (Friedreich's ataxia, Reata), Zurzuvae (postpartum depression, Sage), and Qalsody (amyotrophic lateral sclerosis, Ionis).
- Headquarters
- Cambridge, Mass.
- Employees
- 7,500
- Listed
- Sept. 17, 1991
- Sector
- Health care
- Industry
- Biological products, (no diagnostic substances)
In WallStreetDigest editions
No WallStreetDigest article about BIIB is on the site yet.