Stocks making the biggest moves premarket: RTX, General Motors, Northrop Grumman, Steel Dynamics & more

Check out the companies making headlines before the bell: RTX — The defense stock gained 1% after RTX posted third-quarter earnings of $2.26 per share, excluding items, on revenues of $24.97 billion. That exceeded the LSEG estimates of $1.78 earnings per share on revenue of $24.08 billion. Northrop Grumman — Shares gained 0.5% after the defense contractor reported mixed results for the third quarter. The company earned $7.89 per share, beating an LSEG estimate of $7.18 per share. However, revenue of $11.12 billion was just below the $11.14 billion consensus. General Motors — The automaker fell roughly 5% despite GM reporting third-quarter numbers that beat analyst expectations.