shares of wr berkley corp wrb shed 150 to 7280 wednesday on what proved to be an allaround rough trading session for the stock market with the sp 500 index spx falling 120 to 378322 and dow jones industrial average djia falling 110 to 3287571 the stocks fall snapped a twoday winning streak wr berkley corp closed 419 short of its 52week high 7699 which the company achieved on december 1st the stock underperformed when compared to some of its competitors wednesday as chubb ltd cb fell 049 to 21982 progressive corp pgr fell 035 to 12972 and travelers cos inc trv fell 123 to 18813 trading volume 553683 remained 821482 below its 50day average volume of 14 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