US stock market today: S&P 500, Nasdaq futures rise up to 1.4% as chip stocks rebound after last week's rout

US stock futures rose on Tuesday with chip stocks rebounding — S&P 500 up 0.6 percent and Nasdaq-100 up 1.4 percent — after last week's sharp correction triggered by valuation concerns. The recovery is overshadowed by escalating West Asia tensions, with the US-Iran conflict entering its 10th day and pushing Brent crude above $90 per barrel. The Strait of Hormuz blockade continues to disrupt energy supplies to Asian countries, while investors await quarterly results from Alphabet, IBM and Tesla later this week.