shares of rio tinto plc rio inched up 069 to £6018 tuesday on what proved to be an allaround great trading session for the stock market with the ftse 100 index ukx rising 008 to 795385 rio tinto plc closed £388 short of its 52week high £6406 which the company reached on january 26 trading volume 27 m remained 397860 below its 50day average volume of 31 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