NEW YORK (AP) — The U.S. stock market continues to swing on Thursday and gave back most of a huge gain from the morning following weeks of doubts and erratic moves .

The S&P 500 jumped as much as 1.9% after a blockbuster profit report from Nvidia suggested the market's most influential stock can keep rising, while mixed data on the U.S. job market kept alive hopes that the Federal Reserve can deliver more cuts to interest rates . But it lost most of it and was up by only 0.3% in midday trading.

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