The S&P 500 added another 0.1% in early trading after setting an all-time high every day last week. The Dow Jones Industrial Average fell 19 points, or less than 0.1%, as of 9:35 a.m. Eastern time, and the Nasdaq composite is 0.3% higher, coming off its own record.

US stocks were mixed Monday and the S&P 500 was on the verge of snapping a five-day win streak as investors digested the announcement of a trade deal between Washington and Brussels.