(Bloomberg) — U.S. stock-index futures rallied on Sunday amid optimism around trade talks between two of the world’s largest economies.

March contracts on the S&P 500 Index rose 0.8 percent as of 6:19 p.m. in New York after U.S. President Donald Trump said in a tweet that negotiations were “moving along very well” toward a comprehensive deal, while Chinese state media said Xi Jinping believed both sides wanted “stable progress.” Futures on the Nasdaq 100 Index climbed 0.9 percent, while those on the Dow Jones Industrial Average gained 0.8 percent.