Stocks closed slightly lower and yields for ultra-safe U.S. government debt fell to their lowest level this year as investors around the world waited for Greece to nail down a deal to reduce its crushing debt.
Borrowing costs for European countries with the largest debt burdens shot higher Monday. The two-year interest rate for Portugal's government debt jumped to 21 percent after trading around 14 percent last week.
The Dow Jones industrial average fell 6.74 points, or 0.1 percent, to close at 12,653.72.
The Standard & Poor's 500 index fell 3.32 points, or 0.3 percent, to 1,313.01.
The Nasdaq composite lost 4.61 points, or 0.2 percent, to 2,811.94.
For the year so far:
The Dow is up 436.16 points, or 3.6 percent.
The S&P 500 is up 55.41 points, or 4.4 percent.
The Nasdaq is up 206.79 points, or 7.9 percent.