The U.S. dollar hovered below a one-week high on Thursday and Asian stock markets were broadly 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 is under bombardment from Donald Trump and battling an insurgency within the central bank

The stock market is heading into a catalyst-filled week as Fed Chair Jerome Powell gets ready to speak at Jackson Hole and big retailers report earnings.

Gold rose on Wednesday as the U.S. dollar eased, while market participants braced for the minutes of the U.S. central bank's last policy meeting and upcoming Jackson Hole symposium for clues on future interest rate moves.

The Nasdaq fell as megacaps lost, after having rallied for much of the year. Nvidia fell 3.5%, the biggest drop in nearly four months.