About 70.4 percent of the home loans originated in 2017 were sold to secondary market investors, according to a new Inside Mortgage Trends analysis of Home Mortgage Disclosure Act data released this week. According to the preliminary HMDA data made available by federal regulators, lenders reported $1.738 trillion in first-lien single-family mortgage originations in 2017. HMDA data cover about 96 percent of the market. The biggest buyers were Fannie Mae ... [Includes one data chart]