Major U.S. stock indexes closed lower on Monday as expectations for a deal to reopen the Strait of Hormuz faded [1].

The decline reflects investor anxiety over global energy supplies. Because the Strait of Hormuz is a critical chokepoint for oil, a failure to reach a diplomatic agreement keeps energy prices elevated and increases the risk of persistent inflation [1], [3].

The S&P 500 fell 0.06% to 7,753.12 points [2]. The Nasdaq Composite saw a larger drop of 0.32%, closing at 26,605.36 points [2]. Meanwhile, the Dow Jones Industrial Average declined 0.11% to 53,976.04 points [2].

Market volatility was compounded by corporate movements in the technology sector. Intel weighed on the broader market following a $15 billion share offering [4]. This capital raise, combined with the geopolitical tension in the Middle East, contributed to the general easing of equity prices across the New York Stock Exchange and Nasdaq [1].

Traders had previously priced in a more optimistic timeline for a resolution to the maritime blockade. As those hopes diminished during Monday's session, investors shifted toward a more cautious stance, a move that typically favors safe-haven assets over equities during periods of geopolitical instability [3].

Analysts said that the intersection of high energy costs and corporate equity sales created a challenging environment for growth stocks. The tech-heavy Nasdaq felt the most significant pressure among the three major indexes [2].

Major U.S. stock indexes closed lower on Monday as expectations for a deal to reopen the Strait of Hormuz faded.

The market's reaction underscores the sensitivity of U.S. equities to Middle Eastern geopolitical stability. When the Strait of Hormuz remains contested, the resulting oil price premiums act as a tax on global economic growth, forcing investors to recalibrate inflation expectations and discount the valuation of high-growth tech stocks.