shares of western union co wu slid 163 to 1870 monday on what proved to be an allaround dismal trading session for the stock market with the sp 500 index spx falling 014 to 467029 and dow jones industrial average djia falling 045 to 3606887 western union co closed 791 below its 52week high 2661 which the company reached on april 26th the stock demonstrated a mixed performance when compared to some of its competitors monday as mastercard inc ma fell 155 to 36391 fidelity national information services inc fis fell 108 to 11637 and global payments inc gpn fell 212 to 14701 trading volume 59 m remained 24 million below its 50day average volume of 82 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