Grupo Aeroportuario del Centro Norte, S.A.B. de C.V. (OMAB) Cash Flow Statement

The conversion ratio sitting above 1.0 in most quarters indicates that reported net income is not being inflated by accruals, which is a favorable quality-of-earnings signal for an infrastructure operator. The notable exception is 2024Q2, where OCF/NI fell to 0.81 as working capital absorbed roughly $598 million, suggesting timing effects rather than a structural problem. Investors should monitor whether working capital swings of this magnitude recur, since repeated drains would weaken the cash backing of reported profits.

The wide swing in FCF margin is driven more by working capital movements and the timing of capital expenditure than by changes in core operating profitability, which remains steady. Capex has been modest relative to revenue in most quarters, which supports the high FCF conversion, though the 26.1% capex-to-revenue reading in 2026Q3 warrants investigation to determine whether it reflects a shift toward Master Development Plan investment. Sustained FCF generation at these levels appears to depend on maintaining traffic and tariff conditions.

The alternation between large outflows and inflows suggests the timing of receivables, payables, and concession-related balances is a dominant driver of reported cash. This pattern implies that quarterly FCF is a noisy indicator and that trailing or annual figures give a more reliable picture of underlying cash generation. Investors should monitor whether the outflow-heavy quarters reflect a structural lengthening of collection cycles.

Dividend payments appear to absorb a large share of free cash flow in the quarters they are paid, while buybacks and acquisitions are negligible across the period, suggesting capital is being returned rather than reinvested beyond mandated capex. Given a debt-to-equity ratio of 1.19, this distribution pattern implies management is prioritizing shareholder payouts while leverage remains elevated. Investors should monitor whether dividend levels can be sustained if revenue growth continues to decelerate.