The U.S. dollar turned in a weak performance on Wednesday, weighed down early on in the New York session by data showing a contraction in the nation's manufacturing activity and a drop in job openings, and then reacting to the Federal Reserve's policy statement, and Jerome Powell's comments.

Citing a lack of further progress toward its 2 percent inflation objective in recent months, the Federal Reserve on Wednesday announced its widely expected decision to leave interest rates unchanged. Members of the Fed also reiterated they need "greater confidence" inflation is moving sustainably toward 2 percent before they consider cutting interest rates.

The U.S. dollar fell against its major counterparts in the New York session on Wednesday, as the nation's manufacturing activity contracted in April and job openings missed estimates in March.

European markets were mostly closed on Wednesday for Labor Day holiday. Markets in the U.K. and Denmark, which were open for trading, ended the session on a weak note.

The Canadian market is slightly weak around noon on Wednesday, weighed down by losses in healthcare, energy and consumer discretionary sectors. The mood is cautious with investors digesting the latest batch of economic data from the U.S. and awaiting the Federal Reserve's monetary policy announcement.

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