Why Greenwich LifeSciences Stock Tanked Today

Shares of Greenwich LifeSciences (NASDAQ: GLSI) were tanking 27.8% as of 3:34 p.m. EDT on Monday. The huge drop came after the company published a poster over the weekend at the American Association for Cancer Research (AACR) Annual Meeting showing five-year immune response data from a phase 2b study of immunotherapy GP2.

You might think that Greenwich's phase 2 results were horrible after seeing the biotech stock plummet today. That wasn't the case, however. The company reported that patients with HER2-positive breast cancer receiving GP2 had a 100% disease-free survival rate over five years.

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Source Fool.com