shares of berkshire hathaway inc cl b brkb inched 027 higher to 31455 wednesday on what proved to be an allaround rough trading session for the stock market with the sp 500 index spx falling 041 to 409195 and dow jones industrial average djia falling 011 to 3364650 this was the stocks fifth consecutive day of gains berkshire hathaway inc cl b closed 3631 short of its 52week high 35086 which the company reached on april 21st the stock demonstrated a mixed performance when compared to some of