A two-week ceasefire agreement between the U.S. and Iran triggered significant movements across global financial markets, with Wall Street's main stock indexes rallying sharply. The Dow Jones Industrial Average rose 3% on Wednesday following the announcement of the ceasefire, reflecting a surge in investor sentiment and optimism that energy market disruptions may ease if hostilities further de-escalate [1]. The S&P 500 gained 2.51% to 6,782.81, and the Nasdaq Composite surged 2.80% to 22,635.00, marking the Dow's best day since April 2025 [3]. Crude oil futures dropped 19% on speculation of energy supply normalization [1], although other sources reported oil prices remained elevated, with West Texas Intermediate up 0.64% at $98.50 per barrel and Brent crude rising 0.90% to $96.83 per barrel [2]. Brent crude futures for June delivery added 3.1% to $97.76, and WTI futures for May rose 3.2% to $97.44 [3].
Asia-Pacific markets responded with mixed performance. On Friday, the Kospi advanced 1.88%, Kosdaq was up 1.04%, Nikkei 225 gained 1%, and Topix rose 0.34%, while Australia's S&P/ASX 200 was 0.68% lower [2]. However, on Thursday, after Iran accused the U.S. of breaching the ceasefire, Japan's Nikkei 225 fell 0.73%, Topix dropped 0.90%, Kospi lost 1.61%, Kosdaq declined 1.27%, CSI 300 fell 0.64%, Hang Seng Index was down 0.71%, Nifty 50 was 0.89% lower, and BSE Sensex dropped 0.96% [3]. Australia's S&P/ASX 200 bucked the trend, closing 0.24% higher [3].
The ceasefire was contingent on Iran agreeing to reopen the Strait of Hormuz, a crucial energy waterway, for the next two weeks, provided all attacks on Iran were halted [2][3]. Despite the agreement, traffic through the strait remained minimal, and Iran's parliamentary speaker accused the U.S. of breaching the terms, citing denial of uranium enrichment rights, continued Israeli attacks on Lebanon, and a drone entering Iranian airspace [3]. U.S. President Donald Trump had agreed to pause attacks on Iran, stating, "We received a 10-point proposal from Iran, and believe it is a workable basis on which to negotiate" [3]. Trump also warned Iran against charging fees to oil tankers for passage through the strait [2].
Market analysis from the sources indicates immediate relief to concerns over energy supply disruptions, driving oil prices lower in some instances and boosting equities, particularly in sectors sensitive to energy costs [1]. However, the fragile nature of the ceasefire and ongoing accusations of breaches kept investors cautious, with some Asia-Pacific markets declining and central banks warning of inflation risks and threats to economic growth [3]. Futures tied to the S&P 500, Nasdaq 100, and Dow Jones Industrial Average slipped 0.3% following the breach accusations [3].
Investors are closely monitoring further diplomatic developments between the U.S. and Iran, as well as the potential for longer-term impacts on supply chains and inflation [1][3]. No direct trading advice was given, but sentiment among market participants suggests a shift toward risk-on positioning and increased appetite for equities [1].
CONCLUSION
The U.S.-Iran ceasefire has sparked a sharp rally in global equities and volatility in oil prices, with immediate relief to energy supply concerns. However, ongoing accusations of ceasefire breaches and restricted traffic through the Strait of Hormuz have kept investor sentiment cautious, especially in Asia-Pacific markets. The situation remains fluid, and markets are closely watching for further diplomatic developments and their impact on inflation and supply chains.