shares of wr berkley corp wrb inched 027 higher to 8188 thursday on what proved to be an allaround mixed trading session for the stock market with the sp 500 index spx rising 034 to 470454 and the dow jones industrial average djia falling 017 to 3587095 this was the stocks third consecutive day of gains wr berkley corp closed 088 below its 52week high 8276 which the company achieved on october 25th the stock demonstrated a mixed performance when compared to some of its competitors thursday as arch capital group ltd acgl fell 114 to 4167 alleghany corp y fell 082 to 68746 and american financial group inc afg rose 170 to 14335 trading volume 505797 remained 107526 below its 50day average volume of 613323 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