smiths group plc smin shares inched down 079 to £1629 tuesday on what proved to be an allaround grim trading session for the stock market with the ftse 100 index ukx falling 138 to 752207 smiths group plc closed £178 below its 52week high £1807 which the company reached on february 16 trading volume 398815 remained 594688 below its 50day average volume of 993503 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