US stock futures fall on Monday as oil jumps and Iran tensions rise; Nasdaq futures down 1.1 percent

US stock index futures were lower on Monday, July 13, 2026, in reaction to the exchange of strikes between the United States and Iran and the jump in oil prices. Nasdaq 100 futures fell about 1.07 percent and S&P 500 futures lost about 0.31 percent, while Dow Jones futures were little changed. Semiconductor shares were under pressure, with SK Hynix down about 10 percent in premarket trade.

Brent crude rose about 2.8 percent to around $78 a barrel in the same session. Investors are also awaiting US June consumer price data and the start of big bank earnings on Tuesday.