# Moderna Stock Plunges 25% After Possible Cancer Vaccine Data Leak

- Source: Forbes
- Published: 2026-10-22T18:10:30+00:00
- Category: Business
- Original: https://www.forbes.com/sites/maryroeloffs/2026/10/22/moderna-stock-plunges-25-after-possible-cancer-vaccine-data-leak/
- Canonical: https://groundlevelnews.com/story/moderna-stock-plunges-25-after-possible-cancer-vaccine-data-leak-971b8f/

The drop is a sharp reversal of a massive 2026 stock rally fueled by optimism over its personalized cancer vaccine.

_Ground Level News shows a short summary only; the full article and all rights belong to Forbes._