Onpode
Cover art for Inflation hit a 3-year high in May — but markets bet the Fed won't hike despite oil-driven pressure

Inflation hit a 3-year high in May — but markets bet the Fed won't hike despite oil-driven pressure

June 28, 2026 · 4 min

David Sterling & Megan Skiendel

May 2026 PCE inflation hit 4.1%, a three-year high, driven largely by an oil shock after Iran closed the Strait of Hormuz — but Brent crude has since fallen 36% to $73.40. Core PCE still rose to 3.4%, 140 basis points above the Fed's 2% target, with semiconductors as a secondary driver markets are underpricing.

The Federal Reserve's preferred inflation gauge, the Personal Consumption Expenditures (PCE) price index, rose 4.1% year-over-year in May 2026, the highest reading since April 2023 and a jump from 3.8% in April. On a monthly basis, headline PCE increased 0.4%, matching April's pace.

0:004:28
Make your own on Onpode

Describe any topic. Hear it in minutes.

More Onpode episodes on Finance

About this episode

May's PCE inflation report clocked in at 4.1% — the highest reading in three years — and the initial instinct was to file it under 'energy shock and move on.' Brent crude surged to $114 after Iran closed the Strait of Hormuz, then retreated to $73.40. The fire metaphor writes itself. Except the fire metaphor is wrong. This episode zeroes in on the detail most coverage glossed over: core PCE, which excludes food and energy, rose from 3.3% to 3.4% in May, surprising above consensus. And one of the drivers wasn't oil at all — it was semiconductors. Manufacturers had been double-ordering chips to hedge geopolitical risk during the Hormuz closure. That demand doesn't unwind just because Brent pulls back. The episode also works through what makes this Fed moment genuinely unusual. The standard model gives policymakers two variables — growth and inflation. Now there's a third: whether Tehran keeps the strait open. No model prices that. Polymarket doesn't either. The episode argues that Powell's 'unusually elevated uncertainty' framing isn't evasion — it might be the most accurate thing a central banker can say right now. Core inflation is 140 basis points above target. The Fed can't cut into that. And hiking into a softening economy is a word nobody is saying out loud. Worth your four minutes.

Frequently asked

What did the May 2026 PCE inflation report show?

The May 2026 PCE report showed headline inflation at 4.1%, a three-year high, according to the Bureau of Economic Analysis. Core PCE, which excludes food and energy, rose to 3.4% from 3.3% in April — above the Morningstar/FactSet consensus of 3.3% and 140 basis points above the Fed's 2% target.

Will the Federal Reserve raise interest rates in 2026?

As of late June 2026, the Fed holds its rate at 4.25%–4.50% and Polymarket odds favor cuts over hikes for 2026. Fed Chair Powell has cited 'unusually elevated uncertainty.' However, core PCE at 3.4% — driven partly by semiconductors, not just energy — makes cutting difficult and hiking politically fraught.

Why did oil prices spike and then fall in 2026?

Brent crude surged to $114 per barrel after Iran closed the Strait of Hormuz, then fell 36% to roughly $73.40 following the Strait's reopening. The spike pushed May 2026 headline PCE to a three-year high of 4.1%, but the subsequent oil price decline is expected to mechanically reduce headline PCE readings in June and July.

What is driving core PCE inflation in 2026 besides energy?

Semiconductors are a secondary driver of core PCE inflation in May 2026, up from 3.3% in April. Manufacturers began double-ordering chips during the Strait of Hormuz closure to hedge geopolitical risk, inflating demand. Unlike energy prices, that chip-demand pressure does not automatically reverse when Brent crude retreats.

What is the Strait of Hormuz and why does it matter for U.S. inflation?

The Strait of Hormuz is a critical oil-shipping chokepoint between Iran and Oman. Iran's closure of the Strait in 2026 triggered a Brent crude spike to $114, contributing to May PCE hitting a three-year high of 4.1% and gasoline peaking at $4.56 on May 21, complicating Fed policy and pressuring household budgets.

Grounded in 11 sources
Key inflation gauge jumps to 3-year high in latest sign of affordability challenges - AP News · apnews.com
Key inflation gauge jumps to 3-year high in latest sign of affordability challenges · ca.finance.yahoo.com
The Fed's preferred inflation gauge shows prices rising at fastest pace in 3 years - CBS News · cbsnews.com
Core inflation rate hit 3.4% in May, highest since October 2023, Fed’s preferred gauge shows - CNBC · cnbc.com
PCE report May 2024: Key Fed measure shows inflation rose 2.6% in May from a year ago · cnbc.com
Lower oil prices may be the Fed's next problem: Chart of the Day - Yahoo Finance · finance.yahoo.com
Inflation hits 3-year high, pressuring Fed to raise rates as election nears - Yahoo Finance · finance.yahoo.com
New inflation report could fuel concerns over higher interest rates, even as oil prices fall - NBC News · nbcnews.com
Fed Sees Higher Inflation and Lower Growth Ahead - The New York Times · nytimes.com
Inflation hits 3-year high, pressuring Fed to raise rates as election nears - Politico · politico.com
Key US inflation measure posts largest annual increase in three years · reuters.com
Read transcript

David Sterling: Thirty-six percent. Five weeks. That's the only number that matters today.

Megan Skiendel: Brent crude.

David Sterling: Brent crude. Peaked at a hundred and fourteen when Iran shut the Strait of Hormuz. Sitting at seventy-three forty now. And yet everyone is treating the May PCE print — four-point-one percent, a three-year high — like it's a policy signal. It's not. It's a — well, it's a photograph of a fire that's already been put out.

Megan Skiendel: The market figured that out fast.

David Sterling: Polymarket is pricing cuts, not hikes, for the Federal Reserve in 2026. The Fed is at four-point-two-five to four-point-fifty, holding. Powell goes out and says uncertainty is 'unusually elevated' — that is cover language for a man who sees the same crude chart everyone else sees and just can't publicly commit to what it implies.

Megan Skiendel: Honest question — do you actually believe Jerome Powell is that far behind, or is 'unusually elevated uncertainty' doing more work than you're giving it credit for?

Megan Skiendel: Look, both. The Commerce Department, Bureau of Economic Analysis, they publish core PCE. Not headline. Core. Excludes food and energy. And that number went up. Three-point-three in April, three-point-four in May. The Morningstar, FactSet consensus was three-point-three. It surprised to the upside. You can't wave that away with a crude chart.

David Sterling: Core moved independent of the oil shock.

Megan Skiendel: Completely independent. And the secondary driver the report flags? Semiconductors. Which — honestly, I was at a supply-chain roundtable in March, right when the Strait of Hormuz closure first looked credible, and every manufacturer in the room was already double-ordering chips. Not because demand was there. Because they were hedging geopolitical risk. That demand doesn't reverse when Brent crude retreats.

David Sterling: Wait — semiconductors? As an inflation driver?

Megan Skiendel: In the May PCE report. Secondary driver, they call it. Which — actually, no, I'd call that the buried lede. Core PCE is sitting a hundred and forty basis points above the Federal Reserve's two-percent target and part of what's pushing it isn't energy at all. The fever metaphor breaks down completely. The patient had a pre-existing condition before Iran closed the Strait.

David Sterling: So Powell's uncertainty language — maybe it's not cover. Maybe it's the only honest read of a report where the non-energy number is accelerating and nobody modeled it.

David Sterling: Right, but — let me actually grant the market something here. The energy math is real. Brent at seventy-three forty versus a hundred and fourteen — that difference is mechanical. Headline PCE in June, July, it pulls down. Full stop. The forward-looking bet isn't insane on those numbers alone.

Megan Skiendel: Defensible. Not correct, but defensible.

David Sterling: Here's where it actually breaks, though. The Fed normally has two variables — growth and inflation. That's the whole model. And now they have a third one that — I mean, they cannot touch it. Tehran controls whether the Strait of Hormuz stays open. That's not a market call. Polymarket cannot price that. Nobody can.

Megan Skiendel: And the political dimension makes it worse. Trump is staring down midterms with $4.56 gasoline on the record — May twenty-first, that's the peak. That price is in voters' heads. Even with Brent back at seventy-three forty.

David Sterling: And Israel's co-participation in the military action — that makes the causal chain contested politically. Who owns this shock? The Fed can't answer that question. Powell can't answer it.

Megan Skiendel: Which is probably why bond investors aren't waiting. They're already rotating to non-U.S. markets. That's the smart money voting with its feet — not modeling what the Federal Reserve might do in September.

David Sterling: The Fed is stuck between hawks who see four-point-one percent PCE as intolerable and doves who see a slowing economy. And Tehran is the third variable neither side modeled.

Megan Skiendel: And that's the trap, right? Because if July core PCE prints above 3.2% — which, given semiconductors are still in the system, is not a wild scenario — Powell's 'unusually elevated uncertainty' stops sounding like prudent caution. It starts sounding like a central banker who had the window and didn't move. The Federal Reserve cannot cut into 3.4% core. They just can't. And hiking into a slowing economy? Nobody wants to say that word out loud right now.

David Sterling: Okay, maybe Polymarket isn't pricing geopolitical risk so much as hoping Tehran takes the summer off.

Megan Skiendel: That's a hundred and forty basis points between 3.4% and the Fed's 2% target. That gap doesn't close because Brent crude behaved for six weeks.