NEW YORK -- Stocks rallied 1% in early trading, as investors saw more reasons to be optimistic about Europe's debt crisis.
The Dow Jones industrial average jumped 143 points, or 1.1%, to 13,581 shortly after the opening bell on Wall Street.
The broader Standard & Poor's 500 index rose 15 points, or 1.1%, to 1,456. The Nasdaq was up 28 points, or 0.9%, to 3,144.
Stress tests of Spain's troubled banks reportedly turned out better than expected. Investors also digested a report showing U.S. manufacturing increased in September, following three months of decline.
Stocks had ended the third quarter, which ended Friday, up more than 4%. Central banks around the globe have propped up equity markets by announcing plans to buy bonds to keep interest rates low and steer investors into riskier assets such as equities.