Trump's call at Davos for cuts to US interest rates, oil prices, and taxes spurred investor optimism for his policies, buoying stocks this week. The major gauges ended the holiday-shortened week with gains, demonstrating the power of Trump's comments even as Wall Street questions his ability to execute the changes.

U.S. stocks pulled back from their all-time high on Friday as they closed out a second straight winning week. The S&P 500 slipped 0.3% a day after setting a record. The Dow Jones Industrial Average dipped 140 points,

Netflix, Oracle and other technology stocks are lifting U.S. indexes Wednesday as their profits pile higher and excitement builds around the moneymaking prospects of artificial intelligence. The S&P 500 was up 0.