Wells Fargo, the biggest originator of Home Equity Conversion Mortgage loans, is exiting the reverse mortgage market after 20 years due to the unpredictability of property values. The departure of the San Francisco-based lender is another major blow to the wobbly HECM market already weakened by plummeting home prices. In February, Bank of America, the second largest HECM producer, announced it was quitting the reverse mortgage market to focus on other lines of business. The two institutions showed a combined ... [includes one data chart and one graph]