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Compare Biogen Inc (BIIB) vs Sanofi SA (SNY) Price & Performance

Biogen IncTrade
Sanofi SATrade

Price performance (Past 24H)

Key statistics

Biogen Inc vs Sanofi SA — how do they compare? Biogen Inc trades at $191.26 (market cap $28.34B), while Sanofi SA trades at $43.05 (market cap $102.91B). The key difference: Sanofi SA is far larger — about 3.6× Biogen Inc's market cap, and Sanofi SA pays a 5.6% dividend while Biogen Inc pays none. Which is the better fit depends on your goals.

BIIBSNY
Market Cap
$28.34B$102.91B
Sector
HealthHealth
52-Week High
$216.63$52.34
52-Week Low
$122.68$41.33
Enterprise Value
$30.62B$119.39B
Dividend Yield
5.6%

Aura AI Summary

Signals from Pluang's Aura AI — not financial advice

Biogen Inc

Biogen (BIIB) trades at $209.03, up 4.96% today, with a bullish technical signal and strong analyst support. Recent quarterly earnings have consistently beaten expectations, and the company maintains solid profitability with a 75.49% gross margin. Key developments include FDA approval for a subcutaneous starter dose of Leqembi and promising Phase 2 data for its Alzheimer's drug diranersen, driving positive sentiment.

The outlook is positive, with a consensus price target of $230.18 suggesting upside. Investment opportunities lie in Alzheimer's pipeline advancements, but risks include clinical trial outcomes and competitive pressures. Revenue stability and cost management support fundamentals, though regulatory hurdles remain a watchpoint.

Sanofi SA

SNY trades at $44.00, up 1.15% with a bullish technical signal. Recent FDA approvals for Sarclisa and Nexviazyme highlight pipeline strength. Q1 2026 EPS beat expectations at $1.10 versus $1.06. Revenue grew to $46.72B in 2025 with net income margin of 15.95%. Analyst consensus is mixed with 44% buy ratings. The stock shows solid profitability with ROE at 10.29% and manageable debt levels.

Outlook is positive driven by drug approvals and earnings beats, but EU antitrust probes pose regulatory risks. Valuation at P/E 19.51 is reasonable versus peers. Institutional sentiment is cautious with 52% hold ratings. Key catalysts include Q2 2026 results and Sarclisa commercial rollout. Risks include competition and patent expirations.

Returns comparison

Trailing returns across standard periods

Top news

Latest headlines on both assets

About Biogen Inc

Biogen and Idec merged in 2003, combining forces to market Biogen's multiple sclerosis drug Avonex and Idec's cancer drug Rituxan. Today, Rituxan and next-generation antibody Gazyva are marketed via a collaboration with Roche. Biogen also markets novel MS drugs Plegridy, Tysabri, Tecfidera, and Vumerity. In Japan, Biogen's MS portfolio is co-promoted by Eisai. Hemophilia therapies Eloctate and Alprolix (partnered with SOBI) were spun off as part of Bioverativ in 2017. Biogen has several drug candidates in phase 3 trials in neurology and neurodegenerative diseases and has launched Spinraza with partner Ionis. Aduhelm was approved as the firm's first Alzheimer's disease therapy in June 2021.

Read more on BIIB

About Sanofi SA

Sanofi develops and markets drugs with a concentration in oncology, immunology, cardiovascular disease, diabetes, and vaccines. However, the company's decision in late 2019 to pull back from the cardio-metabolic area will likely reduce the firm's footprint in this large therapeutic area. The company offers a diverse array of drugs with its highest revenue generator, Dupixent, representing just over 10% of total sales, but profits are shared with Regeneron. About 30% of total revenue comes from the United States and 25% from Europe. Emerging markets represent the majority of the remainder of revenue.

Read more on SNY