Moderna is trading at $146.96, up 10.23%, rebounding after heavy profit-taking following its 176.97% surge on August 19.
- Shares fell 23.55% to $133.32 on August 20.
- No clear new company-specific announcement was identified for August 21; investor attention remains elevated after Moderna and Merck reported positive late-stage melanoma-vaccine results, driving the earlier rally.