Why A Strike In The Persian Gulf Just Raised Your Mortgage Rate

Two things happened over the weekend, and both pushed in the same direction: up. Fed Chair Kevin Warsh gave a speech that convinced traders the Fed is more likely to raise interest rates than cut them, and U.S. forces struck Iranian targets in the Persian Gulf, sending oil back above $90 a barrel. By Monday afternoon those two stories had met in an unexpected place, which is the interest rate on a 30-year mortgage.

Fast Facts

• Trump meets oil executives at the White House on Tuesday to push for lower gas prices, after the national average for regular unleaded hit a record seasonal high of $4.03 a gallon on August 13 (Quartz)
• Gold finished August 9.43% higher at $4,431.10 an ounce, its strongest month since February, even though it slipped about 1.1% on Monday itself (The Wall Street Journal)
• Aon agreed to buy rival insurance broker USI in a deal worth roughly $17 billion (CNBC)
• Treasury Secretary Scott Bessent argued for lighter regulation on small banks at the G20 finance ministers' meeting, saying post-crisis rules have squeezed them (Axios)
• Nvidia is putting $3.5 billion into MediaTek as part of its plan for the AI chip buildout (TechCrunch)
• Former Congressman George Santos became the first person permanently banned from the prediction market Kalshi, over trading on an event he could influence (Business Insider)

Global News

• Japan's Nikkei index fell 2.2%, dragged down by chip stocks, after Warsh's speech raised the odds of higher U.S. interest rates (The Wall Street Journal)
• India's economy grew 7.8% in the first quarter of its financial year, which runs April to March, beating estimates on strength in financial services, real estate and IT (CNBC)
• PetroChina's first-half profit jumped 22%, as higher oil prices more than covered the production it lost to the war (South China Morning Post)
• France begins charging a fee on ultra-fast-fashion garments on Tuesday, eventually reaching almost €20 per item, aimed at Asian e-commerce platforms (South China Morning Post)

Traders Rewrote Their View Of The Fed In A Single Weekend

Start with what the Fed actually controls. It sets a target range for one very short-term interest rate that banks charge each other, and right now that range is 3.5% to 3.75%. Almost every other rate in the economy, including the one on a car loan or a mortgage, is built on expectations about where that number is going. On Friday, Warsh gave the keynote at Jackson Hole, an annual gathering of central bankers, and it landed hawkish. In Fed language, hawkish means leaning toward higher rates to fight inflation, and dovish means leaning toward lower rates to support jobs and growth.

Barclays reversed its forecast within days, moving from expecting no rate changes for the rest of the year to expecting two increases, in September and December. You can watch that opinion change in a price. There is a market where traders buy and sell contracts based on where the Fed will set rates, and those prices convert directly into odds, which now show a 60.4% chance of a quarter-point increase in September, up from about 56% on Friday. Japan's Nikkei fell 2.2%, hit hardest in chip stocks, and U.S. stock indexes slipped as well.

The government borrows money for different lengths of time, and each length has its own interest rate, called a yield. On Friday the rate on money the government borrows for two years rose to 4.34%, while the rate on ten-year borrowing rose to 4.73%. The two-year climbed 14 hundredths of a percentage point that day, what traders call 14 basis points, and the ten-year only 6. That gap is the interesting part. Short-term yields mostly reflect what investors expect the Fed to do in the next couple of years; long-term yields reflect slower things like growth and inflation over a decade. When the short end jumps and the long end barely moves, investors are not changing their minds about the economy. They are changing their minds about the Fed, which is exactly what a speech does.

Not everyone is convinced. Matthew Maley of Miller Tabak argued there is "no empirical basis for the rate hike," noting that job market data has been soft while inflation readings have come in better than expected since the Fed last met. Hold onto that. A 60.4% probability is not a prediction that something will happen. It is a market saying this is genuinely close, and about four times in ten the other side is right.

Sources: Quartz · CNBC · The Wall Street Journal · WSJ Markets · U.S. Treasury

Oil Above $90, And The $207 A Month It Costs Somebody Buying A House

On Sunday, U.S. Central Command struck two Iranian rocket launchers on Larak Island, the first direct fighting between Washington and Tehran in weeks, and Iran's Revolutionary Guard answered with strikes on two American bases in Jordan. Oil rose immediately. Brent crude, the international benchmark, gained 3.3% to $90.99 a barrel, and U.S. crude added 3.6% to $86.36. Axios reports the administration has been weighing further limited strikes aimed at stopping Iran from rebuilding the radar and missile systems it uses to threaten shipping.

Here is the part worth understanding, because it explains most of what oil prices do. No barrels actually went missing this weekend and production did not fall. What changed is the chance that it falls, because the fighting is happening around the Strait of Hormuz, one of the most important shipping routes for the world's energy, where traffic has already been badly disrupted over six months of war. An oil futures price, which is simply the agreed price for a barrel delivered next month, is not a measurement of today's supply. It is a bet about future supply, so it moves on news about risk, not just on news about barrels.

Now follow the chain, because this is where it stops being abstract. Higher oil feeds into inflation, since almost everything gets shipped. Higher expected inflation pushes government bond yields up, and mortgage rates track those long-term yields closely. On Monday the average rate on a 30-year fixed mortgage jumped to 6.87%, the highest since June 2025. Before the war started at the end of February it was 5.99%. For someone buying a $450,000 home, roughly the national median, with 20% down, the monthly payment is now about $2,363, which is $207 a month more than the same house would have cost in February. Nobody in that transaction is trading oil. They are buying a house.

Sources: CNBC on the strikes · CNBC on oil · Axios · CNBC on mortgage rates

Who Really Controls Interest Rates?

There is a theme running under Jackson Hole this year with a name that sounds academic until you see what it does. Central bankers are worried about "fiscal dominance," the situation where a central bank stops setting interest rates to keep inflation low and starts setting them to make it easier for the government to afford its debts. The Bank of Japan has been under pressure from its own government not to raise rates even as inflation accelerates, and the IMF's managing director warned that central banks worldwide may face the same squeeze. France is where that pressure shows most: the interest rate it pays to borrow for ten years hit its highest level since 2008 on Friday, with a divided parliament, a prime minister who resigned 27 days into the job before being reappointed, and a 2027 budget due in early October.

Put France next to the Warsh story and you get the two different reasons a country's borrowing costs rise, which look identical on a chart and mean opposite things. In the U.S., yields went up because investors think the central bank will hold rates high on purpose. In France, they went up because investors want to be paid more for the risk of lending to that particular government at all. One is a policy choice; the other is a credit judgment. John Stopford of Ninety One told CNBC that swelling deficits and slowing growth have become a global problem since the pandemic, that France "stands out" as a "poster child," and that governments which never put debt on a sustainable path eventually face a "bond market revolt".

Sources: Axios · CNBC

What To Watch

Reporting after the close today:

• Palo Alto Networks (PANW). Analysts' average estimate is $0.51 in earnings per share, against $0.42 in the same quarter a year ago
• Dell Technologies (DELL), with an average estimate of $4.72 against $2.10 a year ago

Later this week:

• Broadcom reports Wednesday after the close. At roughly $1.75 trillion in total stock market value it is by far the largest company reporting this week, and the average estimate is $2.83 against $1.26 a year ago
• Snowflake and Hewlett Packard Enterprise also report Wednesday afternoon; lululemon, Zscaler and Ciena report Thursday
• The Bureau of Economic Analysis publishes International Trade in Goods and Services on Thursday

The date everything is pointing at: the Fed's rate-setting committee meets September 15 and 16. Traders currently put the odds of an increase at that meeting at 60.4%, close enough that it can still go either way, and every inflation report between now and then will move that number. Nomura told clients that "the sensitivity to near-term inflation data is high," a careful way of saying one bad print could swing it hard. For context, the most recent readings from the Bureau of Labor Statistics are a 0.1% rise in consumer prices and a 4.1% unemployment rate, both for July 2026.