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Biogen/$BIIB

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About Biogen

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).
Ticker
$BIIB
Sector
Health
Primary listing
NASDAQ
Employees
7,500

Biogen Metrics

BasicAdvanced
$37B
108.47
$2.34
0.09
-

What the Analysts think about Biogen

Analyst ratings (Buy, Hold, Sell) for Biogen stock.
Analyst projections of the future price of Biogen stock.

Bulls say / Bears say

Biogen’s growth portfolio rose 24% year on year to $1.06 billion in the second quarter, helping lift total revenue 3%. The company now expects full-year revenue to grow by a mid-single-digit percentage, reversing its earlier forecast for a decline. (SEC)
The FDA approved at-home initiation of Leqembi, giving patients an alternative to starting treatment by clinic infusion. Easier administration could support uptake and help the drug stand out from its infused competitor. (Reuters)
Biogen expects five late-stage trial readouts over the next four quarters, including studies in lupus, kidney disease and Dravet syndrome. Positive results could add new growth drivers beyond its marketed portfolio. (SEC)
Multiple sclerosis product revenue fell 13% year on year to $963 million in the second quarter, as generic and other competitive pressure continued to weigh on the legacy franchise. (SEC)
Reported 2026 adjusted EPS guidance is now $12–$13, down from $14.25–$15.25 in April, reflecting acquisition-related charges and Apellis deal dilution. The deal may broaden Biogen’s portfolio, but it weighs on near-term earnings. (Reuters, SEC)
Biogen’s experimental Alzheimer’s drug diranersen missed its Phase 2 primary goal, and the company did not disclose the size of the observed benefit. Advancing it to late-stage trials therefore carries meaningful efficacy risk. (Reuters)
Data summarised monthly by Lightyear AI. Last updated on 22 Oct 2026.

Biogen Financial Performance

Revenues and expenses
Income statement
QuarterlyAnnual
Q3 24
QoQ growth
Revenue
Net income
Profit margin

Biogen Earnings Performance

Company profitability
Earnings per share
QuarterlyAnnual
Q4 23
Q1 24
Q2 24
Q3 24
Q4 24
Actual
Expected
Surprise

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