shares of robert half international inc rhi rallied 218 to 7555 thursday on what proved to be an allaround favorable trading session for the stock market with the sp 500 index spx rising 133 to 414622 and the dow jones industrial average djia rising 114 to 3402969 robert half international inc closed 4286 short of its 52week high 11841 which the company reached on april 21st the stock demonstrated a mixed performance when compared to some of its competitors thursday as trinet group inc tnet rose 129 to 8507 asgn inc asgn rose 180 to 8023 and manpowergroup man rose 268 to 8034 trading volume 767727 remained 214286 below its 50day average volume of 982013 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