shares of national grid plc ng inched up 058 to £1040 monday on what proved to be an allaround dismal trading session for the stock market with the ftse 100 index ukx falling 082 to 783671 national grid plc closed £231 below its 52week high £1271 which the company achieved on may 18 trading volume 42 m remained 34 million below its 50day average volume of 76 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