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stocksAug 19, 2026, 10:00 PM

Moderna Shares Jump 212% After-Hours on Positive Cancer Vaccine Phase 3 Results

Moderna shares extended gains in after-hours trading after the company reported positive Phase 3 results for an mRNA-based cancer prevention treatment.

MRNA

Moderna ($MRNA) rallied sharply after announcing positive Phase 3 results for what was described as the first mRNA treatment to prevent cancer. The stock extended its advance to +212% on the day in after-hours trading.

The move added more than $50 billion to the company’s market capitalization on the day, according to the report.

The update highlights recent investor attention on mRNA-based oncology programs and their potential commercial impact.

Source: The Kobeissi Letter