Israel's attack on Iran shattered stocks' early-summer calm. Here's what investors should watch out for next.

Israel's attack on Iran triggered a selloff in U.S. stocks on Friday, with the S&P 500 falling 1.1%, the largest daily percentage decline since May 21st, though some analysts noted the market reaction was muted given expectations. Investors should monitor potential labor market weakness and the risk of rising oil prices, as U.S. crude jumped over 7% on Friday, potentially reigniting inflation concerns and influencing Federal Reserve interest rate decisions. Upcoming risks include President Trump's trade agenda, the debt ceiling, and the expiration of corporate tax cuts.

Analysis

Geopolitical tensions sharply interrupted a period of market calm, as Israel's attack on Iran and subsequent Iranian retaliation triggered a significant U.S. stock market downturn on Friday. The S&P 500 (SPX) experienced its largest daily percentage decline since May 21, falling 1.1% to 5,976.97, while the Dow Jones Industrial Average (DJIA) dropped 1.8% and the Nasdaq Composite (COMP) fell 1.3%. Despite these declines, some market observers, like Jay Hatfield of Infrastructure Capital and Brian Mulberry of Zacks Investment Management, characterized the market's reaction as relatively muted, suggesting the escalation was somewhat anticipated, especially following President Trump's earlier comments about personnel evacuation from the Middle East. This event contrasts with the preceding market environment, where 10-day realized volatility for the S&P 500 had reached its lowest point since December. Looking ahead, several factors could introduce further volatility: the approaching July 9 deadline for President Trump’s 90-day tariff pause, potential gridlock in Congress over raising the debt ceiling by the late August/September "X date," and the possible expiration of first-term corporate tax cuts, which could negatively impact corporate profits and stock valuations. Furthermore, escalating conflict between Israel and Iran poses a significant risk to oil prices, evidenced by U.S.-traded crude (CL00) surging over 7% on Friday, its largest one-day gain since 2022. Such a rise, particularly if targeting shipping through the Strait of Hormuz, could reignite inflationary pressures and potentially delay Federal Reserve interest rate cuts. Concurrently, signs of a weakening U.S. labor market, with slowing job creation in the May jobs report and jobless claims remaining at their highest since October, could rekindle recession fears, as noted by Nicholas Colas of DataTrek.

Key Decisions for Investors

• Investors should closely monitor geopolitical developments in the Middle East, particularly concerning Iran-Israel tensions and potential impacts on oil supply via the Strait of Hormuz, given the observed 7% surge in crude prices.
• Attention should be paid to upcoming U.S. economic data, specifically labor market indicators such as jobless claims and employment reports, as well as inflation figures, which will be critical inputs for Federal Reserve policy and overall market sentiment.
• It is prudent to track U.S. political catalysts, including the July 9 tariff deadline, debt ceiling negotiations expected by late summer, and discussions regarding the extension of corporate tax cuts, as these hold significant implications for equity valuations and market stability.
• Given the recent shift from low realized volatility to a more uncertain environment, with general sentiment turning moderately negative, investors may consider reviewing portfolio risk exposures and assessing the need for hedging strategies against potential further market declines.