Oil surges 8% as Iran peace talks collapse, fueling stagflation fears

The collapse of Iran peace talks sent Brent crude above $95 a barrel on Friday, reviving stagflation fears as S&P surveys showed US inflation accelerating alongside supply chain disruptions.

"The breakdown in negotiations removes the last hope for de-escalation in the near term, and markets are pricing in a prolonged period of elevated energy costs," said Helima Croft, head of global commodity strategy at RBC Capital Markets.

Brent crude jumped 8.2 percent to $96.40 a barrel, the highest since April. The S&P 500 fell 1.8 percent, while the 10-year US Treasury yield rose 12 basis points to 4.52 percent as investors priced in higher inflation expectations. The S&P Global US Manufacturing PMI released Friday showed input costs rising at the fastest pace in 14 months, with supplier delivery times lengthening for a third consecutive month.

The combination of surging energy costs and tightening supply chains threatens to push inflation above the Federal Reserve's 2 percent target, potentially forcing policymakers to delay rate cuts into 2027. OIS markets now price a 68 percent probability that the Fed holds rates steady at its September meeting, up from 45 percent a week ago.

The failed talks mark the second attempt at a ceasefire in as many months, with both sides blaming the other for the breakdown. The US has spent more than $37.5 billion on the Iran conflict so far, with the Trump administration requesting an additional $67 billion, according to recent disclosures. Tehran responded to the latest US attacks by targeting military positions in Bahrain, Kuwait and Jordan, widening the conflict's geographic footprint.

The Strait of Hormuz handles about 21 percent of global oil trade, and while shipping lanes remain open, insurance premiums for tanker transit have tripled since June. The risk premium embedded in crude options has expanded sharply, with Brent's 25-delta skew — a measure of tail-risk hedging — reaching its widest since the initial escalation in April.

Supply Chains Tighten as Input Costs Surge

The S&P Global survey data published Friday painted a deteriorating picture for the US economy's supply side. Manufacturers reported the steepest rise in average input costs since May 2025, driven by higher petroleum-based raw material prices and transportation expenses. Delivery times, which had normalized through the first half of the year, extended for the third straight month.

"The last time we saw this combination of oil-driven cost pressures and lengthening supplier lead times was in the second quarter of 2022, when core PCE was running above 4.5 percent," said Sarah House, senior economist at Wells Fargo. "The difference this time is that the labor market is still relatively tight, giving the Fed less room to look through energy price spikes."

What's at Stake for the Fed

The stagflationary signal poses a dilemma for Fed Chair Jerome Powell and his colleagues. The central bank has held its benchmark rate at 5.25 percent to 5.5 percent since July 2023, and had been signaling a potential first cut in December 2026. But the oil price surge and supply chain data suggest inflation could re-accelerate, while the geopolitical uncertainty clouds the economic outlook.

If oil prices sustain above $95 a barrel, Goldman Sachs estimates that US headline CPI would add 0.3 to 0.5 percentage points over the next three months, potentially pushing the annual rate back above 3.5 percent. That would effectively rule out rate cuts for the remainder of 2026 and could revive talk of a hike if inflation expectations become unanchored.

The last time the US faced a comparable oil-driven supply shock — after Russia's invasion of Ukraine in February 2022 — the S&P 500 fell 20 percent over the following six months while Brent averaged $105 a barrel. The current situation differs in scale but shares the same transmission mechanism: higher energy costs squeezing consumer spending and corporate margins simultaneously.

This article is for informational purposes only and does not constitute investment advice.