The Dow rallies 500 points toward a record even as Nvidia sags

NEW YORK (AP) — Most of Wall Street is rising on Tuesday, and the U.S. stock market is back to where it was before last week's swoon .

The S&P 500 added 0.2% after erasing a loss taken during the morning. It's been bouncing around lately, coming off Monday’s vigorous rebound following its first losing week in four.