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Global markets opened the week on an uneasy footing as geopolitical tensions between the Iran and the United States once again disrupted a critical energy corridor, sending oil prices sharply higher while equities delivered a mixed performance across regions.
Crude surged more than 5% after renewed uncertainty over access to the Strait of Hormuz, one of the world’s most vital maritime arteries for oil transport. The Persian Gulf passage was effectively closed after Tehran reversed its earlier decision to reopen it, while Donald Trump confirmed that a U.S. naval blockade of Iranian ports remains firmly in place. The escalating standoff has once again placed global energy supply chains under pressure.
Benchmark U.S. crude climbed 5.3% to $87.88 per barrel, with Brent crude—the international standard—rising by the same margin to $95.62. The sharp move underscores how quickly energy markets react to even short-term disruptions in Middle Eastern supply routes.
Equity markets, meanwhile, reflected a more cautious tone. U.S. futures pointed lower, with contracts tied to the S&P 500 and the Dow Jones Industrial Average each declining 0.7% in early trading.
Across Europe, major benchmarks moved lower amid the renewed uncertainty. Germany’s DAX fell 1.6%, France’s CAC 40 dropped 1.2%, and Britain’s FTSE 100 slipped 0.6%, reflecting investor concern over both energy prices and geopolitical risk.
Asia presented a more resilient, albeit restrained, picture. Markets managed modest gains despite trimming earlier advances. Japan’s Nikkei 225 rose 0.6%, South Korea’s Kospi gained 0.4%, and Hong Kong’s Hang Seng added 0.8%. Mainland China’s Shanghai Composite also advanced 0.8%, while Australia’s S&P/ASX 200 edged slightly higher. India’s Sensex posted a marginal gain, contrasting with a small decline in Thailand’s SET index.
Market sentiment continues to oscillate between cautious optimism and underlying fragility. As Stephen Innes of SPI Asset Management noted, the current rally in equities appears increasingly driven by momentum rather than conviction, raising questions about its sustainability.
The latest volatility follows a dramatic reversal from last week, when oil prices had plunged after Iranian officials signaled that the Strait of Hormuz was open to commercial shipping. That temporary easing of tensions fueled a strong rally on Wall Street, pushing the S&P 500 to a record high of 7,126.06, while the Dow Jones Industrial Average and Nasdaq Composite posted similarly robust gains.
Optimism had been building on hopes that the conflict might avoid a worst-case scenario, helping U.S. equities recover more than 12% since their late-March lows. However, the fragile nature of that optimism has become increasingly evident as developments on the ground shift rapidly.
Tensions escalated again after President Trump revealed that U.S. forces had seized an Iranian-flagged cargo vessel attempting to bypass the blockade—an act Tehran has condemned as piracy, vowing a response. With a two-week ceasefire set to expire midweek, the risk of renewed escalation remains high, casting uncertainty over potential diplomatic progress.
Since the conflict began, global markets have been caught in a cycle of sharp swings—driven by alternating signals of de-escalation and confrontation. While strong corporate earnings in the United States have offered some support to equities, geopolitical risk continues to dominate the broader outlook.
In currency markets, the U.S. dollar strengthened slightly against the Japanese yen, rising to 159.02, while the euro edged higher to $1.1759, reflecting continued sensitivity to both monetary policy expectations and geopolitical developments.
For now, investors remain firmly focused on the Strait of Hormuz—where even the hint of disruption can ripple across global markets, influencing everything from fuel costs to inflation expectations and broader economic stability.