EUR/USD dipped as low as 1.4754 before rebounding to the 1.4780 level. Traders report solid demand for EUR/USD at the 15:00 GMT fixing.
Markets have seen a few waves of synchronous profit-taking this morning, suggest macro funds, which spread bets across various markets, are taking some profits ahead of the Fed.
Oil, gold, EUR/USD and stocks have all given up some gains so far this morning. Markets are choppy and will be thin in the run-up to the 18:15 statement from Washington.