Stocks are rising at the opening of trading on hopes that Greece will get more help managing its debt.
The Dow Jones industrial average is up 124 points, or 1 percent, to 12,565. The S&P 500 is up 13 to 1,344. The Nasdaq composite is up 30 to 2,827.
Hopes for a new aid package for Greece lifted European stocks, the euro and commodities. Crude oil climbed above $103 per barrel.
The U.S. economic recovery remains under stress. Home prices in twelve of the 20 cities in the S&P/Case Shiller home price index dropped to their lowest points since the housing bubble popped in 2006.
Better economic data may come later Tuesday, when economists expect a report to show consumer confidence improved in May.