U.S. stock index futures edged higher on Sunday evening as investors anticipated a summit between President Donald Trump and China’s Xi Jinping in Washington this week, while renewed Middle East tensions limited gains. S&P 500 Futures rose 0.25% to 7,732.0 points by 19:20 ET (23:20 GMT), Nasdaq 100 Futures gained 0.33% to 30,015.75 and Dow Jones Futures advanced 0.23% to 52,199.0. The move followed a mildly positive Friday session in which technology stocks, particularly chipmakers, recovered after steep losses early last week. Anthropic has delayed its planned initial public offering (IPO, first sale of shares to the public) to November from October, according to a Wall Street Journal report, giving the artificial intelligence company time to release third-quarter financial results. Earlier reports said Anthropic would seek a $2 trillion valuation, while Reuters reported that the company plans to release a new model before the IPO, likely competing with OpenAI’s Astra model. Markets also drew support from trade discussions between U.S. officials and China before the Trump-Xi meeting. Treasury Secretary Scott Bessent said he was meeting Chinese Vice Premier He Lifeng in New York City ahead of the summit, which is scheduled for Thursday and would mark the first state visit by the Chinese president during Trump’s second term. Trump and Xi are expected to discuss artificial-intelligence developments and regulation, along with U.S. tariffs on China. A trade truce between the countries is due to expire in early-November. Risk sentiment remained constrained after the U.S. and Iran exchanged threats following attacks by Iran-backed Houthis on Riyadh and their continuing offensive against Saudi Arabia and shipping in the Bab el-Mandeb strait. Oil prices were volatile on Sunday evening after the strikes.