
Shares of U.S. defense firms drop premarket on Tuesday after Iran-Israel ceasefire goes into effect
Lockheed Martin LMT.N and RTX Corp RTX.N down 1.6% each
Northrop Grumman NOC.N, General Dynamics GD.N and L3Harris LHX.N marginally down on low vols
S&P 500 Aerospace & Defense index .SPLRCAERO up 1.3%; index up 23.2% YTD