Oil prices were little changed as traders weighed turbulence in the Middle East against signs of a market well-supplied with crude.
Stocks declined Thursday, tracking European shares, on worries about one of Portugal's top banks.
U.S. Treasury prices continued to rally on future Fed action and safe-haven demand stemming from worries about Portugal's biggest listed bank.
U.S. stock index futures indicated a higher open, ahead of a bumper week of second-quarter earnings.
U.S. stocks climbed on Friday, but closed lower for the week, as investors weighed Wells Fargo results and readied for a slew earnings ahead.
The yen rose as investors sought shelter from economic stress in Europe.
The dollar was steady as investors awaited pivotal events, including Fed Chair Janet Yellen's congressional testimony, for fresh cues.
The yen was near a five-month peak against the euro as banking woes in Portugal drove equities lower and lifted demand for the safe-haven currency.
Bonds held on to earlier gains on Thursday after the U.S. government's auction of 30-year Treasury bonds, the last of three debt auctions this week.
U.S. stock index futures pointed to a higher open, after a bumpy day which saw concerns over Portugal's banking sector cross the Atlantic.
Gold also gained support from India's decision to keep the import duty on gold unchanged at a record 10 percent in the budget, against expectations.
U.S. stock index futures indicated a sharply lower open, despite relatively dovish minutes from the Fed, amid earnings caution.
Crude rose as profit-taking on an extended losing streak momentarily outweighed the prospect of solid supply and weak U.S. gas demand.
The euro traded marginally stronger, with traders looking to a speech by ECB and minutes from the Fed meeting today.
Asian stocks were mixed on Friday on fears that issues at Portugal's biggest bank could hurt European periphery markets.
Asian equities extended losses into a third session on Wednesday following a selloff on Wall Street overnight and steady Chinese inflation data.
Asian equities ended mixed on Thursday following weak trade data from China and minutes from the Federal Reserve's latest meeting.
European shares ended the day lower, dragged down by banking stocks amid reports that more lenders had begun settlement talks with U.S. authorities.
Stocks edged higher on Wednesday, following a two-session drop, as Wall Street welcomed Fed minutes and corporate earnings.
Bonds traded lower after the government's auction of 10-year Treasury notes, the second part of this week's $61 billion fixed-rate debt supply.
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