shares of robert half international inc rhi advanced 111 to 7715 wednesday on what proved to be an allaround favorable trading session for the stock market with the sp 500 index spx rising 142 to 402781 and the dow jones industrial average djia rising 100 to 3271760 this was the stocks fourth consecutive day of gains robert half international inc closed 4465 below its 52week high 12180 which the company reached on march 30th the stock demonstrated a mixed performance when compared to some of