Moderna MRNA stock prediction: $170 bull vs $60 bear

Moderna (NASDAQ: MRNA) closed at $174.38 on 19 August 2026 , up $111.42 — a gain of 176.97% in a single session — after the company and Merck announced that their personalised mRNA cancer therapy had succeeded in a Phase 3 trial. The move added roughly $44.5 billion of market value in one day and made Moderna the S&P 500's second-best performer of 2026, trailing only Sandisk. It did not hold. As…