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.
European stocks managed to consolidate slim gains on Friday afternoon after a heavy selloff in the previous session.
The dollar was back on the front foot against the yen and several other major currencies on Friday, on track for an 11th straight weekly gain.
Gold fell on Friday as a dollar-driven rally encouraged by U.S. economic growth dimmed bullion's investment appeal.
Wall Street looked set for a lower open on Monday, after Hong Kong's worst protests in decades rattled markets.
Brent crude eased in choppy trading on improving supply and concerns about tepid demand, while U.S. crude was boosted by supportive data.
Asian equities were mostly lower on Friday after Wall Street suffered its worst day in nearly two months.
Get the best of CNBC in your inbox
The Thai baht has surprised by becoming a top-performing currency over the past year, but that may change, analysts say.
News this week that Singapore is ranked as the world's most expensive city come as little comfort to its working population.
CNBC's Jim Cramer also says the euro will trade at parity with the dollar.