shares of wr berkley corp wrb shed 104 to 5812 wednesday on what proved to be an allaround poor trading session for the stock market with the sp 500 index spx falling 004 to 437686 and dow jones industrial average djia falling 022 to 3385266 wr berkley corp closed 1887 short of its 52week high 7699 which the company achieved on december 1st the stock demonstrated a mixed performance when compared to some of its competitors wednesday as chubb ltd cb fell 255 to 18492 progressive corp pgr fell 072 to 13169 and travelers cos inc trv fell 245 to 16837 trading volume 13 m remained 497092 below its 50day average volume of 18 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