The dollar climbed to a more than six-month high against the yen on Monday on speculation the Bank of Japan may expand its already massive economic stimulus.
U.S. stocks on Friday tallied a third month of gains.
U.S. stock index futures pointed to further Wall Street gains on Friday, as markets reopened after the Thanksgiving holiday.
Treasury prices dipped slightly on Friday in subdued trading, with investors looking ahead to key data next week.
The yen clawed back lost ground against the euro and dollar in Asia on Thursday after touching fresh lows against both, on track for one of its worst monthly performance this year.
U.S. stocks climb.
Gold settled higher, but suffered its biggest monthly drop in five months.
The euro traded near a five-year peak against the yen and a one-month high against the dollar.
European stock markets closed narrowly higher on Friday.
Asian equity markets were mostly lower on Friday as investors engaged in profit-taking in the absence of a lead from Wall Street.
European equities closed higher on Thursday on euro zone data and a positive handover from Wall Street boosting investor sentiment.
Brent futures held above $111 a barrel on Thursday on worries that supply from OPEC member Libya will continue to be disrupted as winter oil demand increases, but a bigger-than-expected rise in US crude stocks kept the gains in check.
Gold snapped a two-day decline on Thursday but gains were kept in check fears of an early winding-down of the Fed's stimulus.
Asian equity markets followed their Wall Street counterparts higher on Thursday, led by a near 2 percent rally in Japanese shares.
European equities closed higher on Wednesday with investors boosted by strong earnings and a coalition deal in Germany.
U.S. crude fell by nearly $2 on Wednesday as a higher-than-expected build in inventories weighed down prices,
Gold ended lower after strong U.S. data stoked fears that the Federal Reserve would soon begin rolling back stimulus measures.
The euro rose near a one-month high against the dollar and a four-year high against the yen.
Chinese shares outperformed on Wednesday while the rest of Asian shares fell on profit-taking and rising political tensions in the region.
Gold settled higher, but spot gold dropped as encouraging US housing activities stirred fears the Fed will soon scale back stimulus.
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Key members of OPEC are refusing to prop up oil prices, a Reuters survey shows, as its oil output increased this month.
The euro zone slid further into deflation in January, ahead of the launch of the European Central Bank's full-blown bond-buying program.