Moderna (MRNA.O) shares rose as much as 100% intraday, lifting the company's market capitalization above $50 bln after Moderna and Merck (MRK.N) announced successful melanoma vaccine research. Merck shares gained 10% and BioNTech shares rose 17.6%.

2026-08-19

Moderna (MRNA.O) shares rose as much as 100% intraday, lifting the company's market capitalization above $50 bln after Moderna and Merck (MRK.N) announced successful melanoma vaccine research. Merck shares gained 10% and BioNTech shares rose 17.6%.