In Strait of Hormuz, Iran and China take aim at US dollar hegemony

Key event: Iran has begun charging at least some Strait of Hormuz transit fees in Chinese yuan as part of deeper China-Iran economic cooperation, and China currently purchases >80% of Iran’s oil. This is an incremental challenge to dollar hegemony but near-term market disruption appears limited: the dollar still accounts for 57% of global FX reserves vs ~2% for the yuan, only 3.7% of cross-border trade was settled in yuan in 2024, and Iran exported roughly 12.0–13.7 million barrels in the first two weeks of the conflict, mostly to China.

Analysis

China and Iran’s use of the yuan in Strait-of-Hormuz transactions is not an instantaneous threat to dollar hegemony but a deliberate strategy to create localized, persistent non‑USD payment corridors. By converting recurring transit and energy flows into yuan settlement the parties create invoicing stickiness — fewer conversion events, lower demand for USD intraday liquidity, and a gradual re‑routing of correspondent banking volumes in specific EM corridors. I estimate this could depress USD cross‑border payment volume in targeted corridors by a few percent within 12–36 months, enough to bite into FX trading and clearing revenue pools that are concentrated in large banks.

The bank-level second‑order impact is asymmetric: global custodians and dollar clearing banks face slower growth in fee pools and higher compliance/sanctions costs, while data, ratings and commodity‑analytics vendors stand to gain from heightened demand for trade monitoring, sanctions intelligence and pricing services. A plausible medium-term revenue uplift for specialized data providers is +5–10% incremental over 12–24 months as clients pay for de‑risking and alternative‑currency price discovery. Conversely, large universal banks could see a low‑single‑digit percentage compression in FX/wholesale revenue from these corridors, partly offset by higher fees for sanctions screening and advisory work.

Catalysts that could accelerate or reverse the trend are clear and binary: short‑term—military escalation or US interdiction would sharply reduce yuan adoption within days–weeks; medium‑term—meaningful liberalization of China’s capital account or formal adoption of yuan pricing by Gulf producers would produce non‑linear adoption over 12–36 months. The consensus underestimates who wins: it’s not immediate dethronement of the dollar but a durable demand shock for infrastructure (payments rails, analytics, trade finance insurance) that monetizes the shift, which benefits niche service providers far more than sovereign FX issuers in the near term.

Key Decisions for Investors

• Buy SPGI stock or a 12‑month call spread (e.g., 15% OTM) — thesis: 12–24 month acceleration in demand for sanctions, commodity and trade‑flow analytics drives 15–30% upside in revenue; downside ~10–15% if macro weakens. Position size: 1–2% NAV.
• Hedge major bank exposure with a JPM put spread (9–12 month, e.g., buy 15% OTM put / sell 10% OTM put) — thesis: 6–24 month compression in USD FX/clearing volumes + higher compliance costs can knock 3–8% off JPM’s revenue; limited-cost put spread caps premium while protecting against tail downside. Risk: costs small vs potential 5–8% hit to EPS in adverse scenarios.
• Pair trade: go long SPGI / short JPM (1.5x weight to SPGI) over 12–24 months — captures structural rotation into data/analytics providers monetizing de‑dollarization while shorting concentrated exposure to dollar clearing and EM payment flows. Target return 15–25% gross if theme normalizes; stop‑loss 8–10% per leg.
• Tactical, small allocation to CNY appreciation exposure (6–12 month CNH forward or call spread) — thesis: incremental yuan invoicing and any policy easing of convertibility could reprice CNH in phases; keep allocation <1–2% NAV because capital‑control risk and volatility are high. Reward: asymmetric if policy loosens; risk: sharp depreciation or intervention.