Moderna stock plummets after melanoma vaccine data leak

Moderna's stock dropped 25% after unverified data surfaced on X. The data concerns its melanoma vaccine with Merck. Merck's stock fell only 3%.

https://www.expansion.com/estilo-vida/salud/2026/10/23/pasado-espera-desplome-bolsa-vacuna-melanoma-moderna.html

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