shares of northrop grumman corp noc sank 077 to 45245 friday on what proved to be an allaround poor trading session for the stock market with the sp 500 index spx falling 029 to 439895 and dow jones industrial average djia falling 055 to 3373488 this was the stocks second consecutive day of losses northrop grumman corp closed 10382 short of its 52week high 55627 which the company achieved on october 28th the stock underperformed when compared to some of its competitors friday as raytheon technologies corp rtx fell 064 to 9742 boeing co ba fell 024 to 21210 and lockheed martin corp lmt fell 063 to 45871 trading volume 576562 remained 109363 below its 50day average volume of 685925 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