shares of rio tinto plc rio rallied 112 to £5960 wednesday on what proved to be an allaround positive trading session for the stock market with the ftse 100 index ukx rising 013 to 792992 rio tinto plc closed £446 short of its 52week high £6406 which the company reached on january 26 trading volume 30 m remained 344909 below its 50day average volume of 34 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