NEW YORK (CNNMoney) -- U.S. stocks were poised to open higher Tuesday after eurozone finance ministers agree to accelerate an initial bailout for ailing Spanish banks.

The Dow Jones industrial average (INDU), S&P 500 (SPX) and Nasdaq (COMP) futures moved higher Tuesday morning. Stock futures indicate the possible direction of the markets when they open at 9:30 a.m. ET.

Late Monday, eurozone finance ministers agreed that Spain would be offered an initial €30 billion by the end of the month to help bail out its troubled banks. The move is aimed at helping the eurozone's fourth-largest economy from needing a full bailout itself.

But worries remain, said Bob Phillips, co-founder of investment advisory firm Spectrum Management Group in Indianapolis.

"The fundamental issue is that Spain's spending more a year than they're taking in," Phillips said. "They can print money and buy time, but they keep spending money that can't be paid for."

Yields for the 10-year Spanish bond slid to 6.83% following the eurozone announcement. Yields have been recently bouncing above the 7% mark, which heightens bailout worries.