Coinspeaker MRNA Stock Up 18% in Pre-market, Moderna Has Good News about Its Coronavirus VaccineModerna (MRNA) stock is up over 18% in the pre-market after adding 4.54% yesterday. The spike is attributed to the announcement that the coronavirus vaccine trial demonstrated a robust immune response.MRNA Stock Up 18% in Pre-market, Moderna Has Good News about Its Coronavirus Vaccine