The Conference Board Leading Economic Index for the U.S. declined 0.1 percent in December to 111.7 (2016 = 100), following a 0.2 percent increase in November, and a 0.3 percent decline in October.

"The U.S. LEI declined slightly in December and the recent moderation in the LEI suggests that the U.S. economic growth rate may slow down this year," said Ataman Ozyildirim, Director of Economic Research at The Conference Board. "While the effects of the government shutdown are not yet reflected here, the LEI suggests that the economy could decelerate towards 2 percent growth by the end of 2019."

The Conference Board Coincident Economic Index for the U.S. increased 0.2 percent in December to 105.1 (2016 = 100), following a 0.2 percent increase in November, and a 0.2 percent increase in October.   

The Conference Board Lagging Economic Index for the U.S. increased 0.5 percent in December to 106.7 (2016 = 100), following a 0.5 percent increase in November and a 0.6 percent increase in October.