HEALTH

Short Sellers Just Lost $5B on the Wrong Pharma Bet: Cancer Vaccine Sends Stock Soaring 177%

International Business Times UK — August 20, 2026 at 07:28 AM UTC

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Short Sellers Just Lost $5B on the Wrong Pharma Bet: Cancer Vaccine Sends Stock Soaring 177%

Moderna's shares surged 177% after positive cancer vaccine trial results, causing $5 billion losses for short sellers. This marks a potential shift beyond its COVID-19 vaccine business.