The share of all homeowners underwater on their mortgage dropped in the third quarter of 2016 and is now at a fraction of what it was at its high-water mark, according to the latest data from Zillow. The firm found that negative equity dropped to 10.9 percent in the third quarter, down from 12.1 percent in the second and 13.4 percent a year ago. Nationally, there were fewer than 5.3 million homeowners underwater on their mortgage during the third quarter, a level far removed from the peak ...