---
title: "Moderna stock plummets 18% after cancer-vaccine data leak"
type: "News"
locale: "en"
url: "https://longbridge.com/en/news/302861414.md"
description: "Moderna shares tumble as reported results for its cancer vaccine with Merck circulated ahead of a planned conference presentation."
datetime: "2026-10-23T10:18:40.000Z"
locales:
  - [zh-CN](https://longbridge.com/zh-CN/news/302861414.md)
  - [en](https://longbridge.com/en/news/302861414.md)
  - [zh-HK](https://longbridge.com/zh-HK/news/302861414.md)
generator: "portal-rs"
---

# Moderna stock plummets 18% after cancer-vaccine data leak

Moderna shares tumble as reported results for its cancer vaccine with Merck circulated ahead of a planned conference presentation.

### Related Stocks

- [MRK.US](https://longbridge.com/en/quote/MRK.US.md)
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## Related News & Research

- [Merck/Moderna cancer vaccine cuts risk of death or recurrence from melanoma by over 40%](https://longbridge.com/en/news/302763214.md)
- [Moderna, Merck shares fall on eagerly anticipated cancer vaccine results](https://longbridge.com/en/news/303263448.md)
- [Moderna, Inc. $MRNA Shares Sold by IFP Advisors Inc](https://longbridge.com/en/news/303041682.md)
- [EULAV Asset Management Acquires 9,727 Shares of Moderna, Inc. $MRNA](https://longbridge.com/en/news/303047245.md)
- [Moderna is about to release the trial results for its cancer vaccine. A lot is riding on this data.](https://longbridge.com/en/news/302583219.md)

---
> **Disclaimer: This article is for reference only and does not constitute any investment advice.**