shares of biogen inc biib shed 212 to 22591 thursday on what proved to be an allaround dismal trading session for the stock market with the sp 500 index spx falling 110 to 448273 and dow jones industrial average djia falling 089 to 3471539 this was the stocks third consecutive day of losses biogen inc closed 24264 short of its 52week high 46855 which the company reached on june 7th the stock underperformed when compared to some of its competitors thursday as johnson  johnson jnj fell 080 to 16525 pfizer inc pfe rose 095 to 5405 and abbvie inc abbv fell 161 to 13303 trading volume 15 m remained 171494 below its 50day average volume of 16 m editors note this story was autogenerated by automated insights an automation technology provider using data from dow jones and factset see our market data terms of use