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Morgan Stanley upgrades Merck after breakthrough mRNA cancer vaccine shows strong Phase 3 results

Analyst Insights
19 Aug 2026
Andrew Wynn
View Source
Bullish
pluang ai news

Morgan Stanley upgraded Merck to Overweight with a $179 price target, citing a 17.6% upside following successful Phase 3 results of Merck and Moderna's personalized mRNA cancer vaccine combined with Keytruda. The vaccine showed significant improvement in delaying cancer recurrence and metastasis in high-risk skin cancer patients, marking a major breakthrough in cancer treatment. Merck's shares rose 12.61% to $152.22, reflecting strong investor confidence in this innovative therapy. This development positions Merck for potential growth ahead as the first positive Phase 3 result for an mRNA cancer therapy.

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