From 24/7 Wall Street:
There have been a number of attempts to come up with a figure about how many U.S. home mortgages are underwater — in other words, the value of the home loan is more than the value of the house.
...The Wall Street Journal has asked First American CoreLogic, a real estate research company, to give it a try. The report, which is available free online, says that that 23% of mortgages were underwater at the end of the third quarter.
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