national grid plc ng shares inched up 055 to £1090 friday on what proved to be an allaround favorable trading session for the stock market with the ftse 100 index ukx rising 074 to 762720 national grid plc closed £140 short of its 52week high £1229 which the company achieved on march 31 trading volume 47 m remained 34 million below its 50day average volume of 82 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