U.S. stocks also extended their surge to a second consecutive day as investors showed optimism that a new economic proposal from Greece could show progress toward a deal with the countryâs creditors, according to the Wall Street Journal.
Investors also reacted to Federal Reserve Chair Janet Yellenâs midday comments in Cleveland that the central bank is holding to its timeline for an increase in short-term interest rates later this year, the Journal reported.
The Dow Jones Industrial Average climbed 1.21 percent to 17, 760.41, the S&P 500 composite index rose 1.23 percent to 2, 076.62 and the NASDAQ composite index surged 1.53 percent to 4, 997.70.
Top Percentage Gainers
 Company |  $ Stock Price |  $ Change |  % Change |
 Health Net |   69.12 |   2.32 |   3.47% |
 BAE Systems |   29.44 |   0.86 |   3.01% |
  Booz Allen Hamilton |   25.94 |   0.59 |   2.33% |
 L-3 Communications |   120.22 |  2.63 |   2.24% |
 ManTech International |   35.53 |   0.73 |   2.10% |
Market Summary
 Advancing Issues |   27 (90.00%) |
 Declining Issues |    3 (10.00%) |
 Unchanged Issues |    0 |
Executive Mosaic‘s GovCon Index is a composite index that tracks 30 of the largest publicly-traded Government Contracting (GovCon) firms.