Why is Boeing stock sliding today? By Investing.com

Boeing shares slid 1.8% in morning trading after the company reported Q3 2026 results before the bell that missed bottom-line expectations by a wide margin. Revenue came in at $24.2 billion, but Boeing posted a GAAP loss per share of $0.26 and a non-GAAP core loss per share of $0.34. A $697 million operating loss at the commercial airplanes unit weighed on adjusted earnings, with a negative 6.5% operating margin driven by supply-chain costs and a weaker delivery mix. Defense revenue rose 15% to $7.94 billion, and operating cash flow reached $1.5 billion, with free cash flow at $0.5 billion. A $745 billion record backlog provided support.