US STOCKS - Stocks End Slightly Higher After Fed Comments, Ahead of Nvidia

WALL STREET - NEW YORK, May 21 (Reuters) - U.S. stocks closed with slight gains on Tuesday, sending the S&P 500 and Nasdaq to record levels, as investors assessed the latest comments from Federal Reserve officials for clues on the timing of a rate cut while quarterly earnings from Nvidia drew closer.

Nvidia NVDA.O, Wall Street's third-largest firm by market capitalization, will report results after the closing bell on Wednesday in what is likely to be a significant market catalyst and will test whether the outsized rally in AI-related stocks can be sustained.