shares of national grid plc ng inched up 006 to £996 monday on what proved to be an allaround favorable trading session for the stock market with the ftse 100 index ukx rising 040 to 736131 national grid plc closed £275 below its 52week high £1271 which the company achieved on may 18 trading volume 40 m remained 45 million below its 50day average volume of 85 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