Markets rallied as U.S.–Iran progress eased oil fears, while Treasury yields and AI infrastructure spending kept inflation concerns alive.
Sectors & Industries
May 27, 2026
Table of Contents
Markets entered the final trading week of May increasingly pricing in the possibility that the worst phase of the Iran conflict may be easing.
Over the weekend, U.S. and Iranian officials reportedly made progress toward a potential framework agreement that could eventually reopen the Strait of Hormuz and de-escalate the conflict. Iranian officials acknowledged that consensus had been reached on several major issues, though they cautioned that a finalized agreement was “not imminent.” At the same time, tanker traffic through Hormuz began gradually improving, with several LNG vessels successfully passing through the region.
Markets immediately reacted as if the worst-case oil shock scenario was beginning to fade.
Brent crude plunged more than 6% Monday as traders rapidly unwound the geopolitical risk premium that had built throughout the conflict. European natural gas prices also moved sharply lower while global equities rallied, particularly across semiconductors, AI infrastructure, and technology names that had previously been pressured by fears of a prolonged energy and inflation shock.
Still, many of the larger structural risks remain unresolved.
The U.S. naval presence around Hormuz remains active, negotiations surrounding uranium enrichment and sanctions remain unresolved, and Iran continues discussing long-term transit toll structures for vessels crossing the Strait. While shipping conditions have improved, markets increasingly appear to be treating the situation as a temporary stabilization rather than a fully resolved geopolitical breakthrough.
While oil prices collapsed Monday, bond markets are sending a much more cautious message underneath the surface.
Treasury yields surged throughout last week as investors increasingly questioned whether inflation pressures may remain elevated longer than markets had previously expected. The 10-year Treasury yield climbed above 4.5% — its highest level since 2007 — as markets reassessed the combination of persistent inflation, large fiscal deficits, and massive AI-driven capital spending.
Meanwhile, Kevin Warsh was officially sworn in as Federal Reserve chairman — a notable development because many investors had previously viewed him as potentially more dovish than the current Fed leadership. Despite that expectation, odds of a 2026 Fed rate hike spiked to nearly 46%.
The image below highlights how unusual the current environment is historically. Kevin Warsh entered office with the highest 10-year Treasury yield of any Fed chair since Ben Bernanke in 2006 and one of the highest starting yield environments of the modern Fed era, reflecting how much more inflation and borrowing-cost pressure markets are facing today compared to the ultra-low-rate environment of the 2010s.
Importantly, yields were not rising just because of oil.
Markets are increasingly worried that several large forces are all pushing borrowing costs higher simultaneously:
Normally, falling oil prices would help ease inflation concerns and lower pressure on interest rates. If the Strait of Hormuz fully reopens and oil prices keep falling, that could help ease some inflation fears and potentially bring yields lower as well. However, investors may increasingly be focusing on the possibility that borrowing costs could remain elevated even if the immediate Iran-related energy shock fades because several other structural forces are still pushing yields higher underneath the surface.
Part of that shift is tied directly to the AI investment boom itself.
Hyperscalers, utilities, and governments are simultaneously pouring enormous amounts of capital into data centers, semiconductors, power generation, and grid expansion. That spending is supporting economic growth, but it is also increasing demand for financing across the economy at the same time governments are issuing record amounts of debt.
If Treasury yields remain elevated, financing costs across infrastructure, commercial real estate, and leveraged growth sectors could continue rising, potentially making large AI and industrial projects more expensive to fund moving forward.
Higher yields matter because they raise borrowing costs across the economy — from mortgages and auto loans to commercial real estate and corporate debt — while also pressuring expensive, high-valuation growth stocks.
The result is an increasingly unusual setup where equities continue rallying around AI while bond markets remain far more cautious underneath the surface.
Market Implications
Areas that could face pressure if yields continue rising include:
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