Shares of Regeneron Pharmaceuticals Inc. REGN,
fell 1.39% to $643.64 Monday in what turned out to be an overall mixed trading session for the stock market, with the Dow Jones Industrial Average DJIA,
up 0.05% to 35,619.25 and the S&P 500 Index SPX,
a decrease of 0.32% to 4,682.94. The stock’s decline ended a two-day winning streak. Regeneron Pharmaceuticals Inc. closed $42.98 below the 52-week high ($686.62) the company reached on Sept. 3.
The stock showed a mixed performance compared to some of its competitors Monday, such as Johnson & Johnson JNJ,
declined 1.32% to $159.70, Novartis AG ADR NVS,
fell 0.42% to $81.32 and Amgen Inc. AMGN,
fell 1.63% to $202.73. Trading volume (632,087) remained 145,144 below the 50-day average volume of 777,231.