The U.S. dollar hovered below a one-week high on Thursday and Asian stock markets were mixed as investors braced for three days of potentially market-moving news from the Federal Reserve's annual symposium in Jackson Hole.

Federal Reserve chair Jerome Powell is scheduled to speak at the central bank's annual Jackson Hole Symposium on Friday, an event that could be a major test of the stock market's post-"Liberation Day" rally.

The president's latest attack comes as Powell is scheduled to deliver remarks at the Fed's annual conference in Jackson Hole, WY, on Friday.