West Pharmaceutical: Multiple Growth Drivers Are A Tailwind

West Pharmaceutical Services maintains dominant market share in injectable drug delivery, underpinned by a wide moat and robust regulatory positioning. WST reported strong Q1 2026 results, with revenue up 21% and adjusted EPS up 46.9%, prompting a guidance raise and share price rebound. Key growth drivers include biologics market expansion, GLP-1 drug demand, and Annex 1 regulatory upgrades, supporting recurring revenue and margin strength.