The gap between trailing and forward multiples, combined with the company's disclosed GAAP-to-Core EPS divergence, suggests that non-cash items such as stock-based compensation and acquisition-related amortization are inflating the trailing earnings base. Compared to peers like Flex (EV/EBITDA 20.9x) and Plexus (25.3x), Jabil's forward EV/EBITDA of 11.55x appears discounted, which may reflect investor skepticism about whether the recent margin expansion is durable. However, the P/B of 21.92x is elevated relative to every peer except Celestica, a divergence largely explained by the compressed equity base rather than premium asset quality, and warrants caution if the market begins applying book-value-based valuation logic.

The stability of gross margin within a 90-basis-point band over ten quarters indicates that Jabil's pass-through procurement model structurally limits how much of the revenue growth converts into gross profit — even as revenue inflected from a -20.2% decline to +28.6% growth. The operating margin improvement appears largely attributable to SG&A declining from $344M to $209M while revenue grew to $10.6B, a pattern that could reverse if volume softens or if the recent acquisition-integration costs reappear. With net margin at 3.7%, the company still sits below Celestica's 6.7% and Plexus's 4.3%, implying that its true earning power may be best captured by core operating income rather than GAAP net income, especially given the $140M SBC charge in 2026Q4 that did not appear in most prior quarters.

The ROIC improvement is meaningful in absolute terms, but its decomposition reveals that the driver is the operating margin expanding from 3.9% to 6.8% rather than any acceleration in revenue per dollar of capital deployed. Asset turnover has oscillated within a narrow 0.38–0.44x range across ten quarters, indicating that the manufacturing footprint has not become structurally more efficient despite the DMS pivot. For investors, the gap between ROIC (13.9%) and ROA (1.6%) is critical: it reflects the fact that equity has been compressed to $1.6B through buybacks while total assets expanded to $27.4B, meaning the return profile is highly sensitive to whether margin gains are sustained rather than whether the asset base is generating more output per dollar.

Interest coverage of 9.79x in 2026Q4, up from 3.97x in 2025Q4, indicates that the cash-earnings base has expanded faster than interest obligations, which is a positive signal for near-term debt service comfort. However, the D/E ratio of 2.49 remains among the highest in the peer group — versus Flex at 0.84 and Sanmina at 0.16 — and the fact that it has not declined despite the Mobility divestiture suggests the expected de-leveraging has not yet materialized. Investors should monitor whether the rising goodwill balance ($887M to $1.8B in three quarters) and the equity contraction to $1.6B leave sufficient cushion if end-market demand weakens or if acquisition-related liabilities emerge during integration.

The DPO expansion of 48 days over the ten-quarter period is the single largest driver of the CCC improvement, while DSO (56–66 days) and DIO (56–69 days) have remained relatively stable, indicating that the efficiency gain is a capital-structure choice rather than an operational improvement in inventory management or collections. This pattern means Jabil is effectively borrowing from its supply chain, which can improve reported free cash flow in the near term but may expose the company to supplier credit tightening during component shortages or geopolitical disruption. Given the company's significant China-based manufacturing footprint and its reliance on cross-border component flows, the durability of this supplier financing arrangement warrants further investigation before investors treat the improved CCC as evidence of structural working capital strength.