Wall Street is mixed as Nvidia gets back to falling

NEW YORK (AP) — Most of Wall Street is rising on Tuesday, but another return toward Earth for Nvidia is keeping the U.S. stock market down.

The S&P 500 slipped 0.3% in midday trading, despite gains for the majority of stocks within the index. It's a slowdown for the market, coming off Monday’s vigorous rebound following its first losing week in four .