Sanofi (SNY) stock: Winston Score and insider trades
Sanofi is a large French pharmaceutical company that makes prescription medicines, vaccines, and consumer health products. Its biggest products include Dupixent, a drug that treats eczema, asthma, and other inflammatory conditions, along with a broad portfolio of vaccines sold under its Sanofi Pasteur brand. The company sells to hospitals, pharmacies, doctors, and governments around the world. Sanofi earns money primarily by selling branded drugs and vaccines, with Dupixent now generating tens of billions in annual sales and acting as the company's main growth engine. It operates globally, with strong presence in Europe, North America, and emerging markets, making it one of the largest pharmaceutical companies in the world by revenue. The key risk is that Sanofi is heavily dependent on Dupixent for growth, so any safety concerns, competition from biosimilars, or pricing pressure on that single drug could significantly hurt the business.
Winston Score: 64 out of 100, Good
A decent business — some strong pillars, some weaker.
- Quality: Good (18/30)
- Growth: Mixed (9/20)
- Cash Flow: Exceptional (9/10)
- Stability: Strong (8/10)
- Valuation: Strong (7/10)
- Ownership: Good (8/15)
Key Facts
Price: $40.61
Market Cap: $97.3B
Sector: Healthcare
Industry: Drug Manufacturers - General
Exchange: NASDAQ
Editorial rules set and reviewed by Felix Prehn, Economist and Editor. Figures are refreshed daily from Financial Modeling Prep and company filings; last refreshed 2026-10-16.



