U.S. equity futures turned lower late Monday as reports of a breakdown in indirect talks between Washington and Tehran generated fresh concern about a protracted conflict and the prospect of elevated energy prices. The decline followed a run of record highs on Wall Street and coincided with a pullback in some high-flying technology names.
By 19:37 ET (23:37 GMT), S&P 500 Futures were down 0.2% at 40,459.75 points. Nasdaq 100 Futures fell 0.35% to 30,457.75 points, while Dow Jones Futures declined 0.3% to 51,002.0 points. The moves reflected a combination of geopolitical uncertainty and a willingness among investors to lock in gains after recent index advances.
Diplomacy signals and mixed messaging
Iranian state media reported on Monday that Tehran had stopped indirect negotiations with the United States and was moving to fully block the Strait of Hormuz. That report attributed the action to Iran's anger over Israeli military activity in Lebanon. The account added to a backdrop in which the two sides had exchanged air strikes for the second time in a week, testing a fragile ceasefire.
U.S. President Donald Trump delivered differing public messages during the day. In an interview with CNBC he said he did not care if the negotiations had ended. In a separate social media post, however, he wrote that talks with Iran were continuing at a "rapid pace." Reuters reported that Iran was seeking an interim deal with the United States. Later, Trump said he had advised Israel not to pursue a major operation against Hezbollah in Lebanon.
Those mixed signals contributed to a shift in market expectations that had previously pointed toward a comprehensive peace agreement. As a result, oil prices moved higher, and investors grew more cautious about the potential economic effects of a prolonged regional conflict.
Record highs arrive, then momentum cools
Earlier in the session, U.S. benchmark indexes reached new peaks, driven largely by gains in companies tied to artificial intelligence themes. The S&P 500 rose 0.3% to 7,600.02 points, the NASDAQ Composite climbed 0.4% to 27,086.81 points, and the Dow Jones Industrial Average gained 0.1% to 51,078.94 points.
Chipmakers were central to the advance. The Philadelphia Semiconductor Index rose 1.1% and remained near record territory. NVIDIA Corporation (NASDAQ:NVDA) was a standout, jumping 6.3% after unveiling a suite of new AI chips, including a product line designed for Microsoft Corporation (NASDAQ:MSFT) Windows-based systems. Despite the surge, the chip sector appeared vulnerable to profit-taking after a strong run through May.
Broader technology shares mostly retreated in subsequent trading. Major names including Tesla Inc (NASDAQ:TSLA), Amazon.com Inc (NASDAQ:AMZN), Apple Inc (NASDAQ:AAPL), and Alphabet Inc (NASDAQ:GOOGL) were down in the range of about 1% to 5% as investors pared positions. Alphabet fell 1.3% in after-hours trade after announcing plans to raise $80 billion in equity offerings, including an investment arrangement with Berkshire Hathaway (NYSE:BRKa).
Market implications
The combination of geopolitical developments and shifting risk appetite in technology has left market participants weighing two sets of pressures. On one hand, the prospect of higher energy costs from a prolonged Middle East flashpoint could feed through to inflation-sensitive sectors and broader economic sentiment. On the other hand, the AI-led rally that helped drive recent records now shows signs of cooling, inviting profit-taking that could weigh on equities tied to chip production and broader tech exposure.
For investors and corporate planners, the episode underscores how advances in market leadership can be quickly rebalanced by geopolitical headlines. With futures lower and some major tech names trading off their highs, liquidity and positioning will likely determine how durable the latest record levels prove to be in the near term.
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