Moderna (MRNA.O) pre-market US shares jumped over 100% after the company and Merck (MRK.O) said their melanoma vaccine met the primary endpoint in a large trial.

2026-08-19

Moderna (MRNA.O) pre-market US shares jumped over 100% after the company and Merck (MRK.O) said their melanoma vaccine met the primary endpoint in a large trial.