The dollar dropped from six-year highs against the yen on Wednesday, weighed down by a fall in U.S. Treasury debt yields.
Asian stocks were mixed on the first day of the fourth-quarter as investors focused on political unrest in Hong Kong and key Chinese data.
Stocks fell for another session on Tuesday.
Wall Street looked set to open flat on Wednesday, on what will be a busy day for economic data ahead of the official jobs report on Friday.
U.S. bonds gave back gains on Tuesday, with consumer confidence data in focus against a backdrop of social unrest in Hong Kong.
European shares closed higher on Tuesday, after investors focused on key data from the euro zone rather than the Hong Kong protests. protests.
World oil prices tumbled to their lowest in more than two years, with U.S. crude posting its biggest daily decline since 2012.
Gold ended at its lowest level of the year, thus far, as the dollar climbed, posting its sharpest monthly loss since June 2013.
The dollar index briefly trimmed its earlier gains on Tuesday after weaker-than-expected home price data in July raised doubts about the U.S. economy.
Asian equities were mixed on Tuesday amid caution over developments in Hong Kong and as investors focused on data in China and Japan.
U.S. stocks closed lower on Monday despite encouraging economic data as the Hong Kong protests weighed on global markets.
Bonds gained as civil unrest in Hong Kong weighed on stocks and the yield curve flattened as investors bet that econ data would continue to improve.
Wall Street index futures traded higher on Tuesday, with Apple and Netflix in focus against a backdrop of social unrest in Hong Kong.
European shares closed lower as disappointing data weighed on sentiment and protests in Hong Kong affected some financial firms.
The dollar's three-month rally took a breather on Monday on nervousness over Beijing's response to democracy protests in Hong Kong.
Gold settled modestly higher on Monday, but the metal's gains were capped as the dollar seesawed between negative an positive territory.
U.S. crude oil hovered near $94 a barrel on support from strong U.S. economic data last week, while Brent edged up from a two-year low last week.
Asian equity markets started the week mixed, with Hong Kong stocks tumbling on the back of intensifying protests.
Stocks rose sharply on Friday, rebounding after Wall Street's hardest knock in nearly two months.
Bonds fell on news that Pimco CIO Bill Gross would be joining rival Janus Capital, which spurred concerns of investor redemptions.
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