Stocks slipped on Tuesday as investors took profits ahead of a closely watched Federal Reserve meeting, with the S&P 500 down 0.1% after earlier hitting a record, the Dow dropping 185 points (0.4%), and the Nasdaq near flat. Key tech leaders including Nvidia, Palantir, Microsoft, and Alphabet all retreated, as the two-day Fed meeting—expected to announce the first rate cut since December—gets underway.