U.S. stock index futures fell modestly, with the S&P 500 down 0.2% to 6,640.5 points and Nasdaq 100 down 0.3% to 24,290.75.
Investors focused on Trump’s 8 p.m. ET deadline for Iran to reopen the Strait of Hormuz after Tehran rejected a 45‑day cease‑fire proposal.
Trump warned non‑compliance could trigger extensive U.S. strikes on Iranian infrastructure, raising oil‑flow disruption concerns and adding to inflation pressures.
ISM PMI fell to 54.0 from 56.1, missing forecasts, while the index surged to its rise in 13 years, indicating higher inflation.