Stock market today: S&P 500, Nasdaq slip from records as Nvidia dips Yahoo FinanceStock market today: Stocks ease back from records on Wall Street in mixed trading. The Associated PressCNBC Daily Open: S&P 500 crosses 5,500 level before erasing gains CNBCStock Market Today: Rally Stalls As Nvidia Drops, Economic Data Softens Markets InsiderS&P 500, Nasdaq scale record highs as Nvidia lengthens its lead Reuters