U.S. stock index futures gained late Wednesday, after benchmark indexes surged forward in regular trading. As of midnight Eastern, Dow Jones Industrial Average futures /zigman2/quotes/210407078/delayed YM00 +0.01% were up about 100 points, or 0.4%, while S&P 500 futures /zigman2/quotes/209948968/delayed ES00 +0.03% were flat and Nasdaq-100 futures /zigman2/quotes/210219788/delayed NQ00 +0.06% fell after word of an upcoming executive order by President Donald Trump against social-media companies. Stocks jumped Wednesday despite rising tensions between the U.S. and China, as the U.S. and European countries continued to gradually reopen from pandemic-related shutdowns. The Dow /zigman2/quotes/210598065/realtime DJIA +1.44% advanced 553.16 points, or 2.2%, to close at 25,548.27, while the S&P 500 /zigman2/quotes/210599714/realtime SPX +1.05% rose 44.36 points, or 1.5%, ending at 3,036.13. The Nasdaq Composite /zigman2/quotes/210598365/realtime COMP +0.66% gained 72.14 points, or 0.8%, to close at 9,412.36, staging its biggest intraday percentage comeback since Feb. 28, according to Dow Jones Market Data.