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Why Protagonist Therapeutics Stock Is Tanking Today

Why Protagonist Therapeutics Stock Is Tanking Today

Shares of Protagonist Therapeutics (NASDAQ: PTGX), a clinical-stage biotechnology company, are plummeting today. As of 2:26 p.m. EDT, the stock price has fallen 62.9% in response to news of a clinical hold from the FDA. Protagonist Therapeutics is advancing an ambitious pipeline with five new drug candidates in clinical trials right now.