Apple shares rose after reports the Apple Watch received about a million orders in its debut. Facebook gained 2 percent in its largest gain in more than three weeks.
Corporate earnings season was poised to kick into high gear with a slew of reports this week.
15:02 U.S housing starts surge in December; jobless claims near 43-year low13
05:09 Sterling slides to 3-month lows on 'hard Brexit' fears13
01:03 Sterling slides to three-month lows on 'hard Brexit' fears15
22:15 Sterling skids on Brexit anxiety; investors hope for Donald Trump clarity16