Trump said he's poised to unveil a "major" trade deal, boosting optimism that the tide has turned in the tariff hostilities.

Global stock markets were up—along with the dollar—with sentiment further buoyed by the prospect that the Trump administration will announce a trade-deal framework with the U.K.

U.S. stock index futures rebounded on Wednesday as hopes of a de-escalation in trade tensions with Beijing firmed, while the Federal Reserve's ongoing monetary policy meeting remained in focus. Washington announced late on Tuesday that representatives of the two countries would meet over the weekend in Switzerland for ice-breaker trade discussions.