Federal Reserve Chairman Jerome Powell's remarks at the Jackson Hole Symposium. The first one is the 180-day call-put skew derived from options trading on Deribit, the largest crypto options exchange by volume and open interest.

The U.S. dollar was little changed on Wednesday as traders awaited a speech from Federal Reserve Chair Jerome Powell at the annual Jackson Hole symposium later this week for clues on the monetary policy path.

Federal Reserve Chair Jerome Powell's upcoming speech at the Jackson Hole Economic Policy Symposium on Friday is being billed as a pivotal, "make-or-break" moment for the central bank's more dovish contingent.

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.

By Howard Schneider WASHINGTON (Reuters) -Fed Chair Jerome Powell used the central bank's annual Wyoming research conference to promise inflation-fighting rigor when it was needed in 2022, then last year he came to the defense of the job market with promises of lower interest rates when the unemployment rate seemed on a steady rise.