shares of dover corp dov slid 206 to 16425 thursday on what proved to be an allaround grim trading session for the stock market with the sp 500 index spx falling 016 to 447375 and dow jones industrial average djia falling 018 to 3475132 dover corp closed 1221 below its 52week high 17646 which the company achieved on september 9th the stock underperformed when compared to some of its competitors thursday as danaher corp dhr fell 039 to 32400 illinois tool works inc itw fell 107 to 21784 and general electric co ge fell 080 to 10134 trading volume 15 m eclipsed its 50day average volume of 827837 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