Moderna stock (MRNA) steadies in premarket after 16% surge on Merck cancer-vaccine data
Moderna shares held steady at $49.81 premarket Thursday after surging 15.8% on five-year melanoma data for its cancer vaccine with Merck. The vaccine-Keytruda combo cut recurrence or death risk by 49% versus Keytruda alone. U.S. vaccine-policy uncertainty is adding risk for the sector. Investors await Moderna’s Feb. 13 earnings call for updates on oncology data and 2026 sales.