shares of western union co wu shed 185 to 1482 wednesday on what proved to be an allaround dismal trading session for the stock market with the sp 500 index spx falling 078 to 395500 and dow jones industrial average djia falling 088 to 3151043 western union co closed 710 below its 52week high 2192 which the company achieved on september 3rd the stock underperformed when compared to some of its competitors wednesday as mastercard inc ma fell 105 to 32437 fidelity national information services inc fis fell 155 to 9137 and global payments inc gpn fell 038 to 12423 trading volume 83 m eclipsed its 50day average volume of 33 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