shares of union pacific corp unp slumped 034 to 19829 monday on what proved to be an allaround mixed trading session for the stock market with the sp 500 index spx rising 002 to 419263 and the dow jones industrial average djia falling 042 to 3328658 union pacific corp closed 4407 short of its 52week high 24236 which the company reached on august 16th trading volume 17 m remained 13 million below its 50day average volume of 30 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