The S&P 500 opened at an all-time high on Monday, extending a record run from the previous session, with investors awaiting the start of the second-quarter earnings season and a batch of economic data.
The Dow Jones Industrial Average fell 33.41 points, or 0.10 per cent, at the open to 34,836.75.
The S&P 500 opened higher by 2.86 points, or 0.07 per cent, at 4,372.41, while the Nasdaq Composite gained 41.94 points, or 0.29 per cent, to 14,743.86 at the opening bell.