The U.S. dollar continued its slide Wednesday, hitting a near four-year low ahead of the Federal Reserve's interest rate decision. The Dollar Index fell 0.1% to 96.010. Uncertainty surrounding U.S. President Donald Trump's policies and questions about the Federal Reserve's independence contributed to the dollar's weakness, putting pressure on the greenback.

Meanwhile, the euro saw some gains, with EUR/USD trading 0.4% lower at 1.1988. The European Central Bank is expected to hold rates steady, though policymakers are watching to see if a stronger euro could negatively impact inflation. The Yen is also under pressure, with market participants anticipating potential intervention from the Bank of Japan.

Sterling also experienced a pullback, falling 0.4% to 1.3794, after reaching its highest point since October 2021. Investors are focused on the Fed's stance on future rate cuts. The market is also bracing for a potentially co-ordinated foreign exchange intervention by U.S. and Japanese authorities to stem weakness in the Japanese currency.

Overall, the currency market is reacting to various global economic factors, including central bank decisions and political developments. The market is also looking at the recent AI-driven stock picks that are outperforming the S&P 500. Traders are closely monitoring the Federal Reserve's upcoming meeting for clues about future monetary policy changes.