Bond market strains have reasserted themselves across major economies, interrupting an equity rally that had been powered by a wave of AI investment. Long-term yields on U.S. Treasuries have pushed to levels not seen since before the global financial crisis, with the 30-year yield topping 5.159% and 10-year yields climbing to their highest point in over a year.
The combination of rising oil prices, an acceleration in inflationary pressures, and growing concerns about higher interest rates and larger government debt burdens has rattled fixed-income markets. These developments have cast a shadow over stock markets that had been largely focused on the potential for AI-driven corporate earnings and investment flows.
Stress in the bond market is not confined to the United States. As G7 finance ministers and central bankers convened in Paris, long-dated government yields in Japan climbed to record highs. European sovereign yields have reached their loftiest levels in roughly 15 to 20 years, and the United Kingdom is experiencing its highest long-term borrowing costs since the 1990s amid heightened political uncertainty.
Market expectations for further policy tightening are realigning as a result. Interest rate increases are anticipated in Europe and Japan in the coming month, and markets assign better-than-even odds that the Federal Reserve will also tighten policy by the end of the year.
At the centre of the renewed inflation and rate-hike concern is an oil price shock emanating from the Gulf. Fresh drone strikes have occurred in the region, including an attack on a nuclear facility in the United Arab Emirates, while the Strait of Hormuz is effectively closed to most tankers, leaving only a trickle of shipping traffic. World crude prices moved above $110 per barrel on Monday, and year-end oil futures have risen to over $92 per barrel - the highest level recorded so far during the conflict.
Political tensions are compounding market unease. According to media reports, U.S. political leadership has signalled warnings to Tehran and has been preparing to discuss military options, comments that have been cited as contributing to the recent jump in oil prices.
Equity markets, which had largely shrugged off the Gulf shock while riding the momentum of an AI spending surge, have been pulled back from recent highs by the bond market repricing. Major U.S. stock indexes finished sharply lower on Friday, Asian markets eased on Monday, and U.S. futures slipped ahead of the trading day.
Key corporate reports this week are likely to provide a test of the AI-driven narrative and the resilience of the consumer. Results from Nvidia, due on Wednesday, are widely anticipated as a pivotal moment for the AI trade. Retail earnings, led by Walmart, will offer insight into the strength of U.S. consumer demand against a backdrop of elevated energy costs.
Macro data will also be closely monitored. The National Association of Home Builders housing market index for May is scheduled for release on Monday, a report investors and policymakers will watch closely for evidence of the impact of higher mortgage rates on the housing sector.
Chart note - G7 officials at their Paris meetings acknowledged growing concern over public debt levels and bond market volatility in the wake of a recent selloff driven by fears that the Iran-related conflict could exacerbate inflation. Over the past week, implied borrowing costs based on indexes of G7 government bonds maturing in 10 years or more have risen to their highest levels in 24 years, while 30-year U.S. Treasury yields have climbed to levels not seen since before the 2007-08 banking crisis.
Events to watch:
- U.S. May NAHB Housing Market Index - 10 a.m. EDT
- G7 finance ministers and central bankers meeting in Paris
The interaction of elevated oil prices, rising long-term yields and the prospect of tighter monetary policy presents a number of cross-asset pressures. Fixed-income markets are signalling higher borrowing costs for governments, businesses and households. Equities face renewed volatility as investors reassess the durability of AI-led growth against persistent inflation risks. The housing sector will be another focal point for evidence of broader economic strain as mortgage rates remain elevated.