How Hedge Funds Won Big on an Obscure Drugmaker
- Miguel Virgen, PhD Student in Business

- Aug 30, 2025
- 5 min read
In the high stakes world of hedge funds, where billions of dollars can be gained or lost in moments, obscure opportunities often separate winners from losers. Few events in recent years highlight this dynamic as dramatically as the extraordinary surge of Abivax, a little-known French biotechnology company. In a single day, Abivax shares skyrocketed almost 600%, transforming the fortunes of several hedge funds that had been struggling in the red. The story of how these funds capitalized on the surge reveals much about the volatile but rewarding intersection of biotech innovation and speculative investing.
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