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Market Perspectives: The ceasefire and its consequences

Anthony Willis
Anthony Willis
Senior Economist, Multi-Asset Solutions team

Key Takeaways

  • A proposed US-Iran memorandum of understanding has reduced near-term geopolitical risk, but does not yet represent a comprehensive settlement.
  • The critical macro variable is the pace at which shipping through the Strait of Hormuz can normalise and ease pressure on global energy supply.
  • A sustained reversal in oil and gas prices would soften the inflation impulse and lower the probability of additional policy tightening.
  • Risk assets have responded positively, but residual uncertainty argues for caution: implementation risk, supply-chain disruption and geopolitical risk premia remain material.

Reports of a potential US-Iran agreement mark a material shift in the Middle East risk backdrop. The deal is currently framed as a memorandum of understanding rather than a comprehensive settlement. That distinction matters: the terms remain unclear and the underlying sources of tension – including Iran’s nuclear programme, enriched uranium stockpiles, missile capabilities and support for regional proxies – remain unresolved.

Its immediate relevance is therefore less about a definitive end to geopolitical risk and more about whether it can reduce the conflict’s most economically disruptive channel: constraints on energy flows through the Strait of Hormuz.

The Strait of Hormuz is the principal market transmission channel given its role in global oil and gas trade. Restrictions on shipping have amplified energy-price volatility, worsened inflation expectations and contributed to a repricing of interest-rate risk.

Reopening is unlikely to be instantaneous. Shipping channels may require clearance, while security protocols, insurance premia and operator risk appetite will shape the pace of recovery. The distinction between formal reopening and effective normalisation remains central to the market outlook.

If energy flows normalise, the macro implications could be significant. A sustained fall in oil and gas prices would reduce headline inflation pressure, temper second-round effects and support a less restrictive policy path.

Central banks are already balancing sticky inflation against slowing growth momentum. A credible easing in energy prices would reduce the risk of further tightening and could re-anchor expectations around a more benign policy path. Any renewed disruption would likely restore upward pressure on inflation, rates and risk premia.

The initial market response has been constructive, reflecting lower energy-price risk, reduced inflation tail risk and a potentially less hawkish policy trajectory. These dynamics are supportive for equities and credit, particularly if investors can refocus on resilient growth and still-positive corporate earnings expectations.

However, the durability of any repricing will depend on implementation. The agreement remains incomplete, the operational reopening of the Strait will take time, and escalation risk has not been eliminated. The market move should therefore be treated as a relief rally until there is clearer evidence of sustained energy-flow normalisation and lower geopolitical risk premia.

The proposed agreement is potentially meaningful because it targets the conflict’s primary macro transmission mechanism: energy supply disruption. If implemented credibly, it could lower inflation risk, reduce the probability of additional policy tightening and support a more constructive backdrop for risk assets.

This is not a full reset. Energy-security risk has been repriced, supply-chain vulnerability has been exposed and geopolitical risk premia are unlikely to disappear quickly. Portfolio positioning should distinguish between near-term relief and durable improvement in fundamentals. The former is already evident; the latter requires evidence that the agreement can survive implementation and restore reliable energy flows.

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