Moderna’s stock tumbles after reported leak of data for cancer vaccine

MarketWatch Thursday 22 October 2026, 18:10 UTC By Jaimy Lee 1 min read

Key Points

Moderna and Merck are expected to share the Phase 3 data for their experimental cancer vaccine this weekend at a medical conference.

Moderna (ORG) Merck (ORG)

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Moderna’s stock tumbles after reported leak of data for cancer vaccine

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