Credit unions originated $136.86 billion in home mortgages in 2018, according to Home Mortgage Disclosure Act data. By comparison, banks originated $884.04 billion, and nondepository institutions originated $956.04 billion.

The number of credit unions reporting HMDA data for 2018 fell to 1,581, compared to 1,704 in 2017, as disclosure requirements were loosened for smaller originators.

Vienna, Va.-based Navy FCU, the nation's largest credit union by funded loans and mortgage market share, originated $16.44 billion in mortgages and had a 0.82% share of the total U.S. mortgage market in 2018. Navy was the 14th-largest mortgage lender in the country, including banks, thrifts and nonbank lenders, and originated more than four times the amount issued by No. 2, Raleigh, N.C.-based State Employees' CU. Tukwila, Wash.-based Boeing Employees CU was not far behind State Employees at $3.33 billion in mortgage originations.

Meanwhile, Cottage Grove, Wis.-based Summit CU had the highest funding rate of any credit union in the top 20 at 81.8%.

The analysis is based on Home Mortgage Disclosure Act data collected by S&P Global Market Intelligence. Under HMDA, depository and nondepository institutions must annually report every application, origination and purchase of loans for home purchase, home improvement or home loan refinancing. The data is used by regulators to determine whether lenders are serving the housing needs of their communities and to identify possible housing discrimination patterns.