U.S. stocks closed lower on the last day of trade for August as investors digested a volatile month amid uncertainty about China and the Fed.
The dollar rose to one-week highs on Friday.
China's benchmark Shanghai composite ended nearly 5 percent higher with gains accelerating in the final half-hour of trade.
U.S. stocks closed more than 2 percent higher in a second straight day of recovery from a recent plunge, with sentiment helped by a rebound in oil.
The bond market appeared to ignore the sizable stock rally as yields moved into negative territory, shrugging off stronger-than-expected data.
Oil rocketed higher Thursday in one of the biggest one-day rallies in years.
U.S. stock index futures pointed to a lower open on Monday, as European and Asian stocks traded mostly lower on concerns that Beijing might change tack in its efforts to boost the stock market.
Gold eased on Thursday, headed for its biggest weekly rout since March, as upbeat U.S. growth and jobs data drove up stocks and the dollar.
U.S. stock index futures fell early on Friday, as the rocky ride in global markets continued.
The dollar advanced for a third consecutive session on Thursday, bolstered by data showing a much stronger U.S. economy.
Asian shares advanced on Thursday, inspired by Wall Street's biggest one-day gain since 2011 overnight.
U.S. stocks shot higher on Wednesday, rebounding from six consecutive days of declines that pushed the major averages into correction territory.
Treasurys extended losses on Wednesday, pushing yields to session highs, as investors sold the "safe-havens" and piled into riskier assets.
Gold steadied after suffering its biggest fall in five weeks as stock markets recovered; indications of a Fed hike delay supported prices.
The dollar rallied for a second straight session on Wednesday.
Oil futures ended lower after government data showed U.S. crude stocks fell, while gasoline and distillate inventories rose.
China's Shanghai Composite index finished in negative turf late Wednesday, as investor confidence remained frail.
U.S. stocks closed lower, after a failed attempt to rally, as investor confidence waned amid continued concerns about China and global growth.
Traders said the bond market was focused on how equities were trading and the stock market's sharp reversal pushed bond prices off their lows.
U.S. stock index futures pointed to a sharply higher open following the stellar close seen on Wednesday.
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