Previous
24 Sept 2026
25 Sept 2026Next
—
FridayFriday, 25 September 2026

Hormuz diplomacy cools oil, Japan's yields hit a 30-year high, and Trump hosts Xi at the White House

Three stories are pulling global markets in different directions today. Oil is falling on reports that the US and Iran are sketching a deal to reopen the Strait of Hormuz. Japan's long-term borrowing costs have hit their highest point in three decades, which is starting to pull money back home. And in Washington, Trump and Xi sat down to a state dinner with a guest list heavy on tech billionaires and a communiqué light on specifics.

4 stories8 min readConcept: Yield curve
01

US and Iran discuss phased Hormuz deal, oil price falls on the news

Hormuz Oil Risk 2026DiplomacyEnergyTrade

US and Iranian negotiators meeting in New York are exploring a staged agreement that would see Tehran reopen the Strait of Hormuz in exchange for Washington lifting its economic blockade. Reuters reported the talks are aimed at a "phased path out of war". Oil prices dropped on the news, reversing some of the gains made since Brent crossed $100 a barrel earlier this week.

$100
falling on Hormuz deal reports
Brent crude price breached earlier this week
phased
Nature of proposed Hormuz deal described by negotiators
Why it matters

About a fifth of the world's seaborne oil passes through the Strait of Hormuz. Any credible move to reopen it changes the supply picture immediately, and oil markets price on expectations, not just barrels already shipped. A fall in oil prices would ease inflation pressure in oil-importing economies, lower sovereign bond yields that have been climbing on energy-driven inflation fears, and take some pressure off currencies like the Indian rupee that weaken when the import bill rises. The channel from diplomacy to markets here is unusually direct and fast.

IB perspective

The oil price drop today is a good example of how a commodity market prices future supply, not just today's. When traders heard that negotiators were discussing reopening Hormuz, they revised their estimate of how much oil would reach the market over the coming months. That revised expectation pushed the price down before a single extra barrel had moved. This is what economists mean when they say markets are forward-looking: the price reflects the best current guess about the future, and it updates the moment new information arrives.

The honest caveat is that one round of talks in New York is not a deal. The 2015 nuclear agreement, the last time the US and Iran came close to a durable arrangement, took two years of negotiation and collapsed within three years of being signed. What is different now is that both sides have a concrete, measurable ask: Iran wants the blockade lifted, the US wants the strait open. That clarity makes a phased deal easier to structure than a broad nuclear framework. But it also means each side has a strong incentive to pocket the first concession and stall on the rest. If talks break down after a partial reopening, oil could spike harder than it fell today.

02

Japan's long-term bond yield hits a 30-year high, pulling investors back home

Global Bond Sell-Off 2026Central banksMarkets

Japan's long-term interest rate has climbed to its highest level in three decades, driven by persistent inflation concerns. The rise is tempting Japanese investors to bring money back from overseas assets, where they have been a major buyer of US Treasuries and European bonds for years. Whether the yen strengthens significantly in response remains uncertain, as the dollar is also holding firm.

30-year high
highest since the mid-1990s
Japan long-term bond yield
Why it matters

Japanese investors hold enormous amounts of foreign debt, particularly US Treasuries. When yields at home rise, the return on keeping money abroad looks less attractive, so capital flows back to Japan. That selling pressure on foreign bonds pushes their yields up too, adding to the global bond sell-off that has been running all week. For the yen, the effect is ambiguous: repatriation should strengthen it, but a strong dollar is working the other way. The net result is more volatility in currency and bond markets worldwide, with the tightest squeeze felt by governments already running large deficits.

IB perspective

Japan spent most of the period from 1995 to 2022 with interest rates near zero, a policy designed to fight deflation, which is a sustained fall in the general price level. During that time, Japanese investors poured money into higher-yielding assets abroad because domestic bonds paid almost nothing. Now that Japan's inflation has stayed above target for several years, the Bank of Japan has allowed rates to rise, and the yield curve has steepened sharply. A steeper yield curve means the gap between short-term and long-term rates has widened, which signals that markets expect inflation to persist rather than fade.

The precedent that comes to mind is the partial unwinding of the yen carry trade in mid-2024, when a surprise Bank of Japan rate rise triggered a sharp reversal of positions held by investors who had borrowed cheaply in yen to buy higher-yielding assets elsewhere. That episode caused a brief but severe sell-off in global equities and bonds. The situation today is slower-moving, a gradual yield rise rather than a shock decision, which gives investors more time to adjust. But the direction is the same, and the stock of Japanese money parked abroad is still very large. If yields keep climbing, the repatriation flow could become large enough to matter for US Treasury yields at a moment when the Fed is already struggling with inflation.

03

Trump hosts Xi at White House state dinner; AI cooperation tops the agenda, breakthroughs scarce

US-China Summit 2026DiplomacyTrade

US President Donald Trump held a state dinner for Chinese President Xi Jinping at the White House on Thursday, with a guest list dominated by American tech executives. Xi called on the two countries to act as "responsible powers" and urged cooperation on artificial intelligence. Trump said the two leaders had "never gotten along better", but analysts and officials kept expectations for concrete outcomes low.

0
expectations described as low
Major breakthroughs announced at the summit
Why it matters

The US and China together account for roughly 40% of global economic output, so the tone of their relationship sets the background conditions for trade, investment and technology flows worldwide. A cordial summit without deliverables is better than open hostility, but it does not resolve the underlying disputes: export controls on advanced chips, tariffs that remain in place, and competing visions for how AI should be governed. Markets read the warmth as a signal that neither side wants escalation right now, which is mildly positive for risk assets, but the structural rivalry has not moved.

IB perspective

Xi's call for cooperation on AI is worth taking seriously as a piece of strategic signalling, even if nothing was signed. Both governments know that the country that sets the technical standards for AI, the rules about how systems are built, tested and deployed, will have enormous influence over the global technology industry for decades. The US has used export controls, which are restrictions on selling advanced technology abroad, to slow China's access to the most powerful chips needed to train large AI models. Xi's invitation to cooperate is partly a bid to soften those controls by framing AI as a shared challenge rather than a competitive one.

The realist reading of this summit is that both sides are managing a rivalry, not ending it. Trump's tech-heavy guest list tells you what he thinks the summit is for: reassuring American business that the relationship is stable enough to keep investing in China-linked supply chains. Xi gets the optics of being received at the White House, which matters domestically. What I find telling is that Trump said he wants to "leave it exactly where it is" on AI, meaning he is not ready to lift chip controls. That is the one concrete ask Xi brought, and it was quietly refused. The dinner was warm; the answer was no.

04

US mortgage rates top 7% for the first time in 20 months after Fed rate hike

Global Bond Sell-Off 2026Central banksMarkets

US mortgage rates have risen above 7% for the first time since January 2025, according to federal lender Freddie Mac. The move follows the Federal Reserve's decision to raise its benchmark interest rate, the first such increase since 2023, in response to persistent inflation. The rise adds further strain to a housing market already suffering from years of high rates and low supply.

7.03%
20-month high
US 30-year mortgage rate
20 months
Time since rates were last this high
Why it matters

Mortgage rates above 7% price a large share of American households out of buying a home, which depresses construction, reduces spending on furniture and appliances, and slows the broader economy. The Fed's rate hike also pushes up US Treasury yields, the interest rate the US government pays to borrow, which in turn raises borrowing costs for governments and companies worldwide. For India, higher US yields attract capital away from emerging markets, putting downward pressure on the rupee and making it harder for the RBI to cut rates without triggering outflows.

IB perspective

The Fed's decision to raise rates is a textbook example of the transmission mechanism of monetary policy: the central bank raises its benchmark rate, commercial banks charge more to lend, mortgage rates rise, fewer people can afford to buy homes, construction falls, and the economy slows. The intended effect is to reduce spending and bring inflation down. The problem the Fed faces right now is that inflation is being driven partly by high energy prices, which a rate hike cannot fix directly. Raising rates slows demand, but it does nothing about the supply side of the oil market.

The surging Treasury yields create a separate headache. Kevin Warsh, the Fed chair, is watching long-term yields climb even as he raises short-term rates, which means the bond market is doing some of the tightening for him but also signalling that investors expect inflation to stay high for longer. One month of data after a single rate hike is nowhere near enough to judge whether the policy is working. If inflation stays elevated and the housing market freezes up at the same time, the Fed faces the classic dilemma of stagflation, where prices are rising but growth is stalling, and there is no rate setting that solves both problems at once.

Concept of the day

Yield curve

A yield curve is a line that plots the interest rates governments pay on their debt across different time periods, from short-term bills to long-term bonds. When long-term rates rise above short-term ones, investors are demanding extra pay for the risk of lending money for longer. The shape of the curve tells you a lot about where markets think inflation and growth are headed.

In practiceIn Story 2, Japan's long-term bond yield has climbed to a 30-year high, steepening the yield curve and signalling that investors expect inflation to persist. That is pulling Japanese money back home from overseas assets, which matters for every market where Japanese investors have been a steady buyer.

Previous
24 Sept 2026
25 Sept 2026Next
—