shares of northrop grumman corp noc shed 109 to 36975 friday on what proved to be an allaround mixed trading session for the stock market with the sp 500 index spx rising 052 to 450053 and the dow jones industrial average djia falling 006 to 3508974 the stocks fall snapped a threeday winning streak northrop grumman corp closed 3922 below its 52week high 40897 which the company achieved on january 19th the stock underperformed when compared to some of its competitors friday as lockheed martin corp lmt fell 009 to 38933 boeing co ba rose 003 to 20645 and general dynamics corp gd rose 006 to 21229 trading volume 494683 remained 296406 below its 50day average volume of 791089 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