shares of leidos holdings inc ldos sank 067 to 9127 tuesday on what proved to be an allaround mixed trading session for the stock market with the dow jones industrial average djia rising 012 to 2923919 and the sp 500 index spx falling 065 to 358884 leidos holdings inc closed 1985 short of its 52week high 11112 which the company achieved on april 20th the stock underperformed when compared to some of its competitors tuesday as lockheed martin corp lmt rose 026 to 41106 northrop grumman corp noc rose 069 to 50731 and general dynamics corp gd rose 103 to 22774 trading volume 470610 remained 225278 below its 50day average volume of 695888 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