U.S. stock futures are showing an upward trend as investors focus on the upcoming Federal Reserve meeting and developments in the technology sector. In Japan, the Nikkei index opened higher, tracking gains from Wall Street. The Nikkei rose by 400 points at one point during trading, marking its first rebound in four sessions, as market participants remain cautious ahead of the Federal Open Market Committee (FOMC) results. Overall, the Nikkei closed with a gain of 1%, reflecting the positive sentiment from U.S. stock performance.