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Motley Fool
Why AbbVie Stock Sank in September
Shares of the Illinois-based AbbVie (NYSE: ABBV) sank by an eye-catching 10.7% last month, according to data provided by S&P Global Market Intelligence. Early on in September, the U.S. Food and Drug Administration issued a wave of new warnings for a class of drugs known as JAK inhibitors. The warning stemmed from a large safety-related study showing that patients taking Pfizer’s JAK inhibitor medication Xeljanz, an arthritis drug, were at increased risk of heart attack, stroke, cancer, blood clots, and death.
