Geopolitical Tensions and Apple Leadership Shift Weigh on Wall Street

Major U.S. indices closed lower on Monday as optimism regarding the de-escalation of tensions between the U.S. and Iran faded. The S&P 500 fell 0.24% to 7,109.14, while the Nasdaq Composite slipped 0.26% to 24,404.39. The Dow Jones Industrial Average remained nearly flat, edging down 0.01% to 49,442.56. The primary catalyst for the downturn is the precarious state of the Strait of Hormuz, where transit remains heavily restricted. With the current U.S.-Iran ceasefire scheduled to expire this Wednesday evening, traders are bracing for renewed headline-driven volatility. Some economists have warned that a prolonged disruption to oil supplies could significantly hinder global economic growth. Energy markets reacted sharply to the instability, with WTI crude climbing nearly 6% to close at $88.85 per barrel. While this surge bolstered energy sector names, it pressured travel and airline stocks. American Airlines shares declined following the rejection of a merger proposal from United Airlines. In the technology sector, Marvell Technology rose 5.63% on reports of a potential AI chip partnership with Alphabet, and Atlassian rallied after a significant year-over-year decline. However, AST SpaceMobile shares slumped following a failed satellite launch. The market faced additional headwinds after the closing bell as news broke that Apple CEO Tim Cook intends to step down in September. Investors are now shifting focus to upcoming earnings reports from heavyweights including Tesla, UnitedHealth, GE Aerospace, and AT&T to determine if rising energy costs are eroding corporate margins.