rio tinto plc rio shares rallied 161 to £4947 tuesday on what proved to be an allaround great trading session for the stock market with the ftse 100 index ukx rising 012 to 728252 rio tinto plc closed £1459 short of its 52week high £6406 which the company reached on january 26 trading volume 14 m remained 18 million below its 50day average volume of 32 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