Stock Market Declines Amid Rising Inflation Concerns

Global Bond Selloff Halts Stock Rally Amid Concerns Over Central Bank Policy Tightening

A significant selloff in global bonds has halted a rally in stocks, with concern intensifying that central banks will be forced to tighten policy to keep inflation in check amid persistently elevated oil prices. The move has led to a decline in equities worldwide, with the S&P 500 falling approximately 1%.

The technology sector bore the brunt of the selling, following gains from 2026 lows. Meanwhile, US 10-year yields topped 4.5%, while Japan's 30-year yield reached 4% for the first time. In the UK, a political crisis lifted long-bond rates to a 28-year high. The dollar is set for its best week since March, with US crude rising to $105.

The ongoing Iran conflict has sparked speculation that the effective closure of the Strait of Hormuz will deepen energy disruptions, potentially fueling inflation. Back-to-back data this week showed mounting war-driven price pressures, prompting traders to boost bets on Federal Reserve hikes. President Donald Trump stated that he did not push his Chinese counterpart Xi Jinping to pressure Tehran to revive Hormuz, offering no sign of a breakthrough in the standoff over the waterway.

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China believes the strait should be reopened as soon as possible, according to Foreign Minister Wang Yi. While a geopolitical advancement would help in the short term, inflation will take longer to come down, according to Florian Ielpo at Lombard Odier Asset Management.

Risk Sentiment Dented by Global Rise in Bond Yields

The global rise in bond yields, driven by a combination of inflation concerns, expectations for central-bank hikes, and worries around government debt as countries look to cushion the impact of higher energy prices, is denting risk sentiment. Markets are adjusting to the reality that inflation will take longer to come down, according to various analysts.

Read also: US-Iran Tensions Spark Uptick in Oil Prices Amid Global Market Decline

A bond market spooked by fears of accelerating inflation will be an early test for incoming Fed Chair Kevin Warsh, according to Subadra Rajappa at Societe Generale Americas. While central banks cannot directly resolve a global energy shock by raising rates, the prospect of fiscal stimulus appears to be complicating the inflation outlook.

Bullish Calls on US Stocks Challenged

Bullish calls on US stocks will be challenged if Treasury 10-year yields hit 5%, a level that usually depresses price-to-earnings ratios and "seems to spook people," according to Lori Calvasina at RBC Capital Markets. Beneath the surface, this was a week of concentrated leadership for equities and classic fear-of-missing-out behavior, according to Mark Hackett at Nationwide.

"There are signs of extended positioning and extreme optimism, which could lead to a natural and healthy period of consolidation," he said. "Ultimately, however, if the macro and earnings environment remain supportive, the path of least resistance is higher."