Six weeks after the Federal Reserve raised interest rates, thedollar is up more than 1 percent as traders wait for signs of thecentral bank's next move.

The greenback swung between gains and losses Wednesday againstmost of its major peers as traders weighed whether the marketturmoil that has greeted the start of 2016 will prompt U.S. policymakers to signal a slower pace of interest-rate increases.

Traders are jittery before central-bank meetings this week inthe U.S., Japan, and New Zealand amid speculation that policymakers will be forced to address volatile markets. The greenbackhas rallied for the last two years on speculation that the Fed willboost borrowing costs in contrast to easing by its globalpeers.