Stable Market Minute - 9th April 2026: Iran Ceasefire Fizzles and Rate Bets Swing

A two-week Iran ceasefire deal briefly repriced rate expectations across the UK, US, and EU — then partial breach reports sent markets lurching again. Here's what it means for treasurers.

Key takeaways

• The Iran ceasefire shifted UK rate pricing from two implied hikes to one, and EU pricing from three hikes to two — within hours of the announcement.
• Major UK mortgage lenders had already repriced two-year fixed rates upward; those moves will not automatically reverse.
• The dollar sold off on ceasefire news and partially recovered; GBP/USD sits around 1.33, reflecting continued market scepticism.
• The Strait of Hormuz remains effectively closed pending an Iranian approval and toll process — conditions are far from normalised.
• Even a durable ceasefire is unlikely to return oil to pre-conflict price levels; damaged infrastructure and a new geopolitical risk premium create a structural floor.
• Weekend talks between the UK and Iran, hosted by Pakistan, are the next major catalyst — expect significant market moves on Monday.

A Ceasefire That Markets Only Half-Believed

On 9th April, Alistair and Nigel from Treasury Swing sat down to unpack one of the most volatile stretches of market activity either could recall. The trigger: a two-week ceasefire agreement between the US and Iran, approved by both parties and announced via media channels just days earlier. The reaction was immediate — and then quickly complicated.

Within 24 hours of the ceasefire being confirmed, reports emerged that Israel had conducted attacks on Lebanon, which both the US and Israel denied formed part of the agreement. That partial breach sent markets into another round of whipsaw moves, though the scale was notably smaller — one to two percent intraday swings compared with the 15 to 16 percent moves seen the previous day.

How Rate Expectations Shifted — and Shifted Back

Before the ceasefire, rising oil prices had pushed inflation expectations higher across major economies. The practical effect was a significant repricing of central bank paths: markets moved from pricing rate cuts in the UK and the US, and rates on hold in Europe, to pricing rate hikes — two in the UK and three in the EU — with the US firmly on hold.

The ceasefire announcement immediately knocked one implied hike off the table in both the UK and the EU. Markets shifted back to pricing one hike in the UK and two in the EU, while the US moved fractionally closer to a single cut than it had been before. It was a dramatic repricing in a matter of hours — and it illustrated just how sensitive rate bets have become to geopolitical headlines.

Mortgage Rates Had Already Moved

The implied rate hikes were not purely theoretical. Major UK lenders — including HSBC, NatWest, and Halifax — had already pushed up two-year fixed mortgage rates in response to the elevated rate expectations. That real-economy transmission happened fast, and it will not automatically reverse just because the ceasefire has held for a few days.

Bank of England Governor Andrew Bailey has remained deliberately non-committal on forward guidance, adopting a wait-and-see stance. Given the speed at which conditions have changed, that caution is understandable — but it leaves businesses with little anchor when planning borrowing costs.

The Dollar Sold Off — Then Partially Recovered

Sterling's move against the dollar reflected the broader risk-on shift. The dollar sold off sharply on the ceasefire news, pulling back to around the 1.33 level — broadly the pre-conflict range. The recovery since then has been modest, and the market remains reluctant to treat the ceasefire as a permanent settlement.

That reluctance is rational. The Strait of Hormuz remains effectively closed pending an acceptance process imposed by Iran, which includes a toll or levy for ships seeking to transit. Iran also warned that vessels passing through without pre-approval would be attacked. These are not the conditions of a market returning to normal.

The Speed of Market Reaction Has Changed Everything

One of the sharpest observations from the discussion was how technology has compressed market reaction times to near-zero. A post on Truth Social from President Trump referencing a ceasefire — roughly two weeks before the formal agreement — moved the S&P 500 by two to three percent within 13 seconds. By the time broader market participants processed the news, a retracement was already underway.

For business owners and finance teams who are not specialists in hedging volatile market risk, this environment is genuinely difficult to navigate. The moves have been large, fast, and driven at times by headlines that were later contradicted or walked back. That is not a market where intuition or delayed reaction serves you well.

Even If the Ceasefire Holds, the Risk Premium Has Changed

Nigel's closing point is perhaps the most important one for treasurers to sit with: a return to normality does not mean a return to where we were. Iran has demonstrated it can effectively hold the Strait of Hormuz to ransom. Talk of a transit toll — whether one dollar or two per barrel — adds a structural floor to oil prices that did not exist before.

Venezuela and Iran have both re-entered the geopolitical equation in ways that raise the baseline level of risk for energy markets globally. Physical infrastructure around energy supply has also been damaged in ways that will take time to repair. The practical effect is that even a successful ceasefire outcome is unlikely to return oil to $60 a barrel any time soon. That higher oil price feeds through to inflation, which in turn pushes out the timeline for rate cuts — the very cuts that businesses have been waiting on for several years.

What to Watch This Weekend and Into Next Week

Direct talks between the UK and Iran are scheduled to take place this weekend, hosted by Pakistan. These are in-person negotiations — a step up from previous indirect channels — and the outcome is likely to drive significant moves when markets open on Monday. Both a breakthrough and a breakdown carry the potential for outsized reactions given how sensitised markets currently are.

For finance teams managing currency exposure or interest rate risk, the next 72 hours merit close attention. The direction of those talks will shape rate expectations, commodity prices, and currency levels in ways that could be material to hedging decisions made in the coming weeks.

Next steps

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