An index designed to predict the future health of the economy posted a third straight solid gain in November.

The Conference Board says its index of leading indicators increased 0.6 percent in November, matching the revised October gain. The October reading had originally been reported as a 0.9 percent increase. The index posted a 0.8 percent rise in September after being unchanged in August.

Conference Board economists say the widespread gains in the leading index are pointing to strong underlying conditions in the U.S. economy.

The leading index is composed of 10 forward-pointing indictors.