shares of norfolk southern corp nsc slipped 149 to 28869 monday on what proved to be an allaround positive trading session for the stock market with the sp 500 index spx rising 018 to 461367 and the dow jones industrial average djia rising 026 to 3591384 this was the stocks second consecutive day of losses norfolk southern corp closed 737 below its 52week high 29606 which the company achieved on october 29th the stock underperformed when compared to some of its competitors monday as union pacific corp unp fell 080 to 23946 canadian national railway co cni rose 028 to 13328 and csx corp csx fell 133 to 3569 trading volume 893851 remained 343612 below its 50day average volume of 12 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