There's a big shift in rate expectations," said Marc Chandler, chief market strategist at Bannockburn Global Forex in New York. Goldman Sachs (GS.N), among other big banks, said it no longer expects the Fed to deliver a rate hike at the end of its two-day policy meeting on March 22. "There's been a radical change in interest rate expectations and in that scenario the dollar has weakened," said Niles Christensen, chief analyst at Nordea. The Japanese yen strengthened 1.47% at 133.04 per dollar, while the dollar fell 1.23% against the Swiss franc at 0.910. Earlier, it hit a near one-month high of $1.0737, ahead of the European Central Bank's policy meeting on Thursday.

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