The euro whipsawed against the dollar on Wednesday after the Federal Reserves said it would leave interest rates unchanged.
Yields hit session highs after the Fed signaled it wants to see further economic gains and higher inflation before it decides to raise interest rates.
Chinese stocks rebounded on Wednesday, taking the lead in a broader recovery in Asian markets.
U.S. stocks closed about 1 percent higher as investors cheered some recovery in oil prices, amid mixed earnings and the beginning of the Fed meeting.
Europe ended in positive territory on Tuesday, as investors kept an eye on the slew of earnings and the start of the Federal Reserve meeting, while British insurer RSA surged 20%.
Gold firmed on Tuesday but remained near 5-1/2-year lows as markets braced for this week's Federal Reserve meeting.
Oil recovering from near six-month lows Tuesday as bets for a drop in U.S. crude stockpiles offset worries about a global supply glut.
The U.S. dollar rebounded against the euro and yen on Tuesday after traders took profits from gains in those currencies.
Asian stocks edged up from session lows on Tuesday, taking their cues from the mainland.
U.S. Treasurys extended losses slightly after the Treasury Department's two-year notes sale on Tuesday.
U.S. stocks closed lower under pressure from an overnight plunge in the Shanghai Composite and a continued decline in commodities.
European stock closed lower on Monday, after a sharp selloff in Asian shares highlighted concerns about Chinese market volatility and slowing growth.
U.S. stock futures suggested a positive Wall Street open on Wednesday, as the spotlight turned to the end of the U.S. Federal Reserve's two-day meeting.
Gold lost ground on Monday with expectations for a near-term U.S. interest rate hike seen keeping momentum firmly with the bears.
The U.S. dollar hovered around a nearly two-week low against a basket of major currencies on Monday.
Crude oil futures hit four-month lows on Monday after a steep drop in China's stock markets sparked concern about its economic health.
U.S. sovereign bonds rallied on Monday, as a sell-off in global stock markets and commodities lifted demand for safe-haven assets.
U.S. stocks were tipped to open higher on Tuesday, ahead of the start of the U.S. Federal Reserve's two-day meeting, a raft of earnings and data.
Chinese stocks led the sell-off in Asia on Monday, as the fall in commodity prices, questionable growth in the mainland sapped risk appetite.
U.S. stocks closed about 1 percent lower, despite surprisingly strong Amazon earnings, as signs of slower global growth weighed on sentiment.
Get the best of CNBC in your inbox
Euro zone annual inflation held steady at 0.2 percent in July, far below the European Central Bank's target.
A U.K. withdrawal from the EU could trigger another Scottish independence referendum, said Nicola Sturgeon, the First Minister of Scotland.
Japan's inflation target remains out of reach, with June core CPI for June barely budging and as households unexpectedly stopped spending.