The gross margin is the more honest read of earning power here because it absorbs the abnormal production and rework costs that operating-margin comparisons across program-accounting regimes can blur; at 9.0% against a peer group near 20%, Boeing appears to be recovering volume without yet recovering cost control. The divergence between a positive 0.6% operating margin and a negative 0.5% net margin in 2026Q3 implies that below-the-line items, plausibly interest expense given 0.79x coverage, are still consuming the entire operating result. The 34.3% net margin printed in 2025Q4 alongside a negative operating margin should be treated as a non-recurring artefact rather than evidence of true earning power, so any adjusted earnings base should be built from operating income less unabsorbed abnormal costs.

Read against its own ten-quarter history, Boeing appears to have stopped destroying capital but has not started compounding it, and the improvement from the 2024Q3 trough looks margin-driven rather than efficiency-driven, since asset turnover has only edged from 0.10 to 0.14 over the same window. The 150.6% ROE reported for 2025Q4 should be disregarded entirely, as it reflects a temporarily compressed equity base rather than genuine returns to shareholders, and the subsequent return to a negative 1.8% ROE in 2026Q3 confirms the instability of that denominator. Investors should also note that much of the equity repair appears to have come from acquisition-generated goodwill rather than retained earnings, which means even the ROIC denominator is flattered relative to the tangible capital actually deployed.

The $12 billion of debt reduction since 2024Q2 has lowered refinancing exposure, but coverage has swung from negative 6.49 to 13.62 to 0.39 within four quarters, a range that implies debt service comfort is currently a function of one-off items rather than a stable operating earnings stream. At 0.79x in the most recent quarter, coverage below one suggests the company may be relying on its roughly $9.5 billion cash position to meet coupon obligations rather than on period earnings, which is a materially weaker posture than peers running 8-12% net margins. Because goodwill now accounts for roughly $17.8 billion of a $6.5 billion book equity base, the headline debt-to-equity ratio both overstates the cushion and, on a tangible basis, understates the effective leverage, so analysts should track net-debt-to-tangible-equity alongside the reported figure.

The improvement from a 493-day cycle in 2024Q2 to 346 days is meaningful, but decomposing it shows the gain is overwhelmingly an inventory story (DIO falling from 492 to 375) rather than a supplier-finance story, since DPO has actually shortened from 68 to 62 over the same period. Falling DSO from 69 to 33 days suggests customer collections are disciplined, but the inventory drawdown may reflect clearing previously parked aircraft rather than a structurally leaner production system, so investors should monitor whether DIO continues to fall under the FAA production ceiling. The combination of a shortening cycle and a still-sub-1.0x quick ratio of 0.34 indicates that working-capital release is a necessary but insufficient source of liquidity while inventory remains the dominant asset on the balance sheet.

The trailing P/E is arguably flattering already, because it is calculated on net income that includes the roughly $9 billion non-operating swing in 2025Q4; on operating earnings alone, the multiple would appear considerably higher, which is the more relevant framing for a company with a 0.2% ROIC. The price-to-book of 23.49 should be treated cautiously since book equity of about $6.5 billion is itself flattered by $17.8 billion of goodwill and tangible equity is roughly negative $11.3 billion, making the book multiple largely uninformative rather than merely rich. The only multiple that appears usable, P/S of 1.49, prices each dollar of revenue at a level that presupposes a return toward mid-single-digit operating margins, which the current 0.6% operating margin and 1.9% FCF margin have not yet validated.