Dow Jones Industrial Average rose 53.28 points (0.48 percent) to 11045.27 in late trading after a brutal session on Tuesday which resulted in the index fell more than 200 points.
The NASDAQ composite index rose 0.26 points (0.01 percent) to 2471.73 and indeksStandard & Poor's 500 rose 7.65 points (0.65 percent) to 1191.36.
Shares rose from lows Tuesday on signs that the bailout for the Greek EU appears more likely, and the news that the Federal Reserve may not raise interest rates in the near future.
The European Union on Wednesday called for a crisis summit for Greece which increased the debt crisis hit global markets amid fears that more countries will be sucked inside.
Leaders from 16 nations using the euro currency will meet in Brussels approximately May 10 to try to agree on a massive rescue operation.
Fend off news that the ratings of Portugal and Spain both reduced, the market received a boost from the United States are more optimistic economic assessment from the U.S. Federal Reserve.
Pointing to some acceleration of economic recovery, the Fed said labor and housing markets showed improvement and expenditure has increased.
"Economic activity continued to strengthen and ... labor market started to recover," said the Federal Open Market Committee (FOMC).
The Fed also continued to maintain interest rates at very low levels, which will help spur economic growth.
Investors quickly came to look forward.
"With the policy statement that came out, many market participants turned their attention focused on the number of weekly jobless claims tomorrow and then the first quarter GDP figures on Friday," according to analysts at Briefing.com.
Meanwhile, many analysts to revise the selling yesterday's action, interpreting it as a normal correction after rising for weeks.
"We believe our projections, the normal correction has begun, interrupted by a failure to rally," said Al Goldman at Wells Fargo.
Financial shares led the Dow higher, after a long day burdened by the Congress has questioned the executives of Goldman Sachs and in the midst of discussions about financial regulation.
JPMorgan shares rose about two and a half per cent and Bank of America rose 1.77 percent.
On Nasdaq, shares of Apple, after weeks of rising fell back 0.17 percent.
Bonds slide down. Earnings yield (yield) bonds 10-year U.S. Treasury raised to 3.763 percent from 3.751 percent Tuesday, while the 30-year bond rose to 4.627 from 4.614 percent. Results and bond prices move in opposite directions.
