Shares of Regeneron Pharmaceuticals Inc. /zigman2/quotes/203149337/composite REGN -0.94% slid 2.55% to $623.05 Friday, on what proved to be an all-around grim trading session for the stock market, with the S&P 500 Index /zigman2/quotes/210599714/realtime SPX -1.54% falling 0.57% to 4,123.34 and Dow Jones Industrial Average /zigman2/quotes/210598065/realtime DJIA -1.38% falling 0.30% to 32,899.37. This was the stock's second consecutive day of losses. Regeneron Pharmaceuticals Inc. closed $124.37 short of its 52-week high ($747.42), which the company achieved on April 8th.
The stock underperformed when compared to some of its competitors Friday, as Johnson & Johnson /zigman2/quotes/201724570/composite JNJ -0.63% fell 0.22% to $176.37, Novartis AG ADR /zigman2/quotes/203243705/composite NVS -0.69% fell 0.45% to $85.82, and Amgen Inc. /zigman2/quotes/209157011/composite AMGN -1.12% rose 0.92% to $236.50. Trading volume (767,703) eclipsed its 50-day average volume of 643,281.