shares of progressive corp pgr slid 162 to 12536 wednesday on what proved to be an allaround rough trading session for the stock market with the sp 500 index spx falling 138 to 451339 and dow jones industrial average djia falling 098 to 3528252 progressive corp closed 2451 below its 52week high 14987 which the company reached on april 11th the stock underperformed when compared to some of its competitors wednesday as chubb ltd cb rose 115 to 20555 american international group inc aig rose 147 to 6127 and arthur j gallagher  co ajg rose 105 to 22155 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