Dow futures plunge 310 points: 5 things to know before market opens

• Iran seized two vessels in the Strait of Hormuz and demanded the U.S. lift its naval blockade, heightening risks of what analysts warn could become one of the largest oil supply shocks in decades
• Tesla stock fell after announcing plans to boost capital spending to over $25 billion for AI, robotics, and semiconductors; IBM dropped roughly 7% on disappointing results and slowing growth in key segments
• Texas Instruments surged about 10% after guiding second-quarter revenue and profit above Wall Street expectations, providing a bright spot in an otherwise cautious market ahead of jobless claims and manufacturing data

Market Summary: Dow Futures Plunge 310 Points

Market Overview

U.S. equity futures signaled a weaker Thursday open as investors paused following recent gains. Dow Jones futures declined approximately 310 points (0.6%), while S&P 500 and Nasdaq 100 futures dropped 0.5% and 0.6% respectively, indicating broad-based risk aversion.

Geopolitical Tensions

Iran escalated Middle East tensions by seizing two commercial vessels in the Strait of Hormuz and demanding the U.S. lift its naval blockade. Despite President Trump's earlier ceasefire extension, the unresolved conflict threatens shipping disruptions and energy supply chains. Analysts warn this could trigger one of the largest oil supply shocks in decades, with elevated oil prices potentially fueling inflation and complicating Federal Reserve policy decisions.

Corporate Earnings Highlights

Tesla shares fell after the company announced plans to increase capital expenditures to over $25 billion for AI, robotics, and semiconductor investments.

IBM plunged roughly 7% following disappointing results, with slowing growth in key segments raising concerns about returns on substantial AI investments.

Texas Instruments surged approximately 10% after forecasting second-quarter revenue and profit above Wall Street expectations, providing a bright spot amid cautious sentiment.

Market Implications

The market faces multiple headwinds: geopolitical uncertainty, oil price volatility, and questions about AI investment returns. Commodity-linked sectors show particular strain as investors weigh supply disruption risks against demand expectations. Upcoming earnings from Honeywell, American Airlines, American Express, and Comcast, along with weekly jobless claims and manufacturing data, will provide crucial economic indicators for near-term direction.

Analysts highlight concerns about diminishing marginal returns from massive AI investments as an overlooked theme requiring investor scrutiny.