

Sanofi Drops, Jet2 Warning, Burberry Rise
Sep 4, 2025
Sanofi's latest drug trial results have disappointed investors, raising questions about its future prospects. Jet2 shares plummeted by 25%, amidst a significant surge in trading volume, reversing previous gains. In a bright spot, Burberry is set to make a triumphant return to the FTSE 100 Index after a year away, thanks to a new strategy that highlights its iconic heritage. This juxtaposition of struggles and comebacks exemplifies the volatility in the stock market.
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Sanofi Drug Fell Short Versus Dupixent
- Sanofi's new eczema drug improved skin but underperformed versus its existing blockbuster Dupixent.
- Investors viewed the relative shortfall as a meaningful setback, pushing shares sharply lower.
Pipeline Uncertainty Hurts Investor Confidence
- Sanofi now faces uncertainty across multiple late-stage programs after mixed pulmonary trial results.
- The company needs clearer wins to reassure investors amid recent pipeline disappointments.
Jet2 Profit Warning From Last‑Minute Bookings
- Jet2 warned profits will be at the lower end of consensus and cited limited visibility from last‑minute bookings.
- Unsold winter seats and a plan to reduce capacity drove a large share drop and analyst cuts.