shares of union pacific corp unp slumped 028 to 19947 tuesday on what proved to be an allaround mixed trading session for the stock market with the sp 500 index spx rising 009 to 415487 and the dow jones industrial average djia falling 003 to 3397663 union pacific corp closed 5105 below its 52week high 25052 which the company achieved on april 21st trading volume 24 m remained 14 million below its 50day average volume of 37 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