The blue-chip Dow Jones ended higher after hitting an intraday record high on Friday, as UnitedHealth's shares jumped after Berkshire Hathaway raised its stake, but other Wall Street indices slipped as mixed data clouded the Federal Reserve's next monetary policy move.

The S&P 500 and the Nasdaq Composite reached all-time highs late June, thanks to renewed AI enthusiasm, hopes of U.S. trade deals and rising bets on interest rate cuts, which helped drive a turnaround in U.S. stocks from a sharp rout earlier this year.