Pfizer Obesity Drug and Fourth-Quarter Beat Offset by Policy
Pfizer obesity drug showed mid-stage efficacy as Pfizer beat estimates but warned profits would fall from Trump-era policy, creating trader uncertainty.

KEY TAKEAWAYS
- Midstage trial showed 12.3%-13.0% weight loss in non-diabetic adults.
- Fourth-quarter 2025 results beat estimates while Pfizer forecast a profit decline tied to pricing and tariffs.
- Metsera $10.0 billion acquisition and cost cuts shift strategy toward pipeline and obesity M&A.
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Pfizer Inc. reported on Feb. 2, 2026, that mid-stage results for a Pfizer obesity drug showed weight loss in adults without diabetes, while the company said fourth-quarter 2025 results exceeded analysts' expectations but forecast a profit decline tied to Trump administration pricing and tariffs.
Midstage Trial Results and Strategic Context
Topline data from the mid-stage trial showed weight reductions of roughly 12.3% to 13%. The candidate is an injectable GLP-1 (glucagon-like peptide-1) weight-loss drug formulated for once-monthly dosing, which may influence its market positioning against other regimens. Pfizer acquired the asset through the $10 billion Metsera deal, positioning the company to compete with Eli Lilly and Novo Nordisk in the fast-growing obesity market. No regulatory approvals or stage-advancement announcements were disclosed for the Metsera-acquired drug.
Fourth-Quarter Results and Outlook
Pfizer’s fourth-quarter 2025 earnings beat consensus estimates. However, the company forecast a profit decline attributed to pricing policies and tariffs implemented during the Trump administration. Management signaled a strategic shift from pandemic-driven revenue toward pipeline development, targeted acquisitions, and large-scale cost reductions. Together, the quarter’s results, the profit warning, and the Metsera acquisition highlight Pfizer’s repositioning toward obesity treatments and M&A-led pipeline growth as new revenue drivers beyond its pandemic-era sales.





