Crude fell on Monday, pressured by developments in Ukraine and concerns about the economy voiced by Fed Chief Janet Yellen.
Stocks trimmed their gains Friday as investors positioned for the end of the quarter on Monday.
The yen eased on Tuesday as a hike in Japan's sales tax came into effect, although the dollar failed to gain much traction after the Federal Reserve chair defended the central bank's ultra-loose policy and highlighted slack in the economy.
U.S. bonds fell on Friday as hopes for monetary stimulus in China saw investors' bid for "safe-haven" assets wane.
European stocks held onto gains on Friday to close higher for a second-straight week.
Gold logged a second straight weekly loss on Friday as an improving US economic outlook lifted the dollar and bolstered appetite for risk.
Crude rose, with Brent flirting with its first weekly gain since February as U.S. data and geopolitical tensions supported prices.
The euro fell to three-week low against the dollar on Friday, with investors wary given strong rhetoric from European Central Bank officials about its recent strength and awaiting German inflation data that could undermine it further.
Asian stocks ended mostly higher on Friday as growing hopes of policy easing in China offset a weak lead from Wall Street.
Stocks wavered Thursday after mixed economic reports.
The yen reached a fresh six-year low on the New Zealand dollar on Monday, as safe-haven demand waned amid hopes of more stimulus from China.
U.S. stock index futures traded higher on Friday, with global shares boosted early in the day by hopes of monetary stimulus in China.
Treasurys rose after the government's auction of seven-year Treasury notes, the final sale of $96 billion in new coupon-bearing supply this week.
European stock markets closed mixed on Thursday.
The euro fell on Wednesday, with investors wary after European Central Bank officials ramped up efforts to talk down the currency, with arguably its most hawkish member hinting at a radical softening of monetary policy.
U.S. crude rallied to a three-week high as strong U.S. data and the end of refinery maintenance season signaled strong demand.
Gold settled below $1,300 an ounce on Thursday as encouraging US economic growth in the fourth quarter diminished the metal's appeal as a hedge.
The dollar edged higher against the euro and the yen after upbeat U.S. economic data.
Asian stocks were mixed on Thursday as investors fretted about tougher sanctions against Russia.
U.S. stocks fell on Wednesday as Ukraine back in focus.
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