Asian currencies mostly weakened against the dollar in the morning session ahead of the three-day Jackson Hole symposium that starts Thursday.

Shares in Asia fell on Wednesday, weighed down by a tech-led selloff on Wall Street, while the dollar gained some ground ahead of a key meeting of central bankers later in the week.

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.

The U.S. dollar gained for a third straight session on Wednesday against the euro and sterling as traders awaited the Federal Reserve's annual Jackson Hole symposium this week for clues on the monetary policy path.

Jerome Powell has the ideal platform Friday to deliver a clear signal the Federal Reserve is about to resume cutting interest rates. But the economy isn’t giving him an equally clear signal that now is the time.

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.

The crypto market decline deepened as Bitcoin, Ether, and XRP dropped ahead of Fed Chair Powell's Jackson Hole speech and policy cues.

FILE PHOTO: Ukrainian President Volodymyr Zelenskiy meets some of the European leaders at the Ukrainian Embassy, ahead of their meeting with U.S. President Donald Trump, in Washington, D.C., U.S., August 18, 2025. Italian Prime Ministry /Handout via REUTERS/File Photo LONDON (Reuters) - What matters in U.S. and global markets today