The stock exchanges in New York remain closed on Monday due to Martin Luther King Day. The rest of the week will be traded on Wall Street.
The numerical season in the United States started last week, with results from large American banks, among others.
This week it is the turn of online video service Netflix, pharmaceutical company Johnson & Johnson and chipmaker Intel.
The US stock markets closed again with record positions on Friday.
The mood was still supported by optimism about the Sino-US trade agreement and good quarterly results from companies. The Dow-Jones index ended 0.2 percent higher at 29,348.10 points.
The broad-based S&P 500 won 0.4 percent to 3329.62 points, and the Nasdaq technology fair rose 0.3 percent to 9388.95 points.