U.S. market gains accelerated to the close of trading Monday, the Dow Jones industrial adding 2.53 percent after a week of volatile trading.
The DJIA added 272.38 points to reach 11,043.86, after dropping more than 500 points in the previous week.
JPMorgan Chase led the DJIA, gaining 6.96 percent, followed by Bank of America, up 4.6 percent, and Boeing Inc., up 4.2 percent after saying Sunday it had delivered the first Dreamliner 787 planes to All Nippon Airways in Japan.
By close of trading on Wall Street, the Standard & Poor's 500 index added 26.52 points or 2.33 percent to 1,162.95. The Nasdaq composite index added 33.46 points or 1.35 percent to 2,516.69.
On the New York Stock Exchange, 2,224 stocks advanced and 829 declined on volume of 4.3 billion shares traded.
The benchmark 10-year treasury note fell 19/32 to yield 1.904 percent.
The euro rose to $1.3528 from Friday's $1.3499. Against the yen, the dollar fell to 76.36 yen from Friday's 76.58 yen.
World financial leaders met in Washington during the weekend, adding pressure on European leaders who have yet to extinguish uncertainty concerning a possible default by Greece that could pull down others in the 17-member eurozone.
Markets in China, Hong Kong and Japan were lower Monday. In Europe, stocks found some traction despite warnings a solution would have to wait until at least November when the Group of 20 nations meets.
In Tokyo, the Nikkei 225 index lost 2.17 percent, 186.13, to 8,374.13.
In London, the FTSE 100 index gained 0.45 percent, 22.56, to 5,089.37.