Boeing Co BA

Our econometric model suggests Boeing’s revenue growth is not being driven by outsized R&D or SG&A spend. With R&D elasticity at 0.20x and SG&A elasticity at 0.28x, a 1% rise in R&D or SG&A yields only about 0.2%–0.3% more revenue, implying growth is coming mainly from higher delivery volumes, backlog execution and mix (including services), rather than product development push. The holdout forecast of $23.1B versus actual $23.9B implies roughly a 3.5% underprediction, signaling modest model bias but some upside not captured—potentially defense wins or services strength. The 8.5% MAPE points to reasonable but not tight forecast reliability in a long-cycle, lumpier business; risks to growth include slower airframe deliveries, supply-chain disruptions, and defense budget shifts that could temper the 5% YoY trajectory and pressure margins if ramp rates falter.