By Nick Timiraos

The U.S. government’s massive share of the nation’s mortgage market grew even larger during the first quarter.

Government-related entities backed 96.5% of all home loans during the first quarter, up from 90% in 2009, according to Inside Mortgage Finance. The increase was driven by a jump in the share of loans backed by Fannie Mae and Freddie Mac, the government-owned housing-finance giants.

By providing a steady source of liquidity to the mortgage market, the government has helped housing markets to stabilize. However, “Fannie and Freddie have to get smaller and less relevant in order to revamp them, and instead, every day they’re getting bigger and bigger and bigger,” said Paul Bossidy, chief executive of Clayton Holdings LLC, a mortgage analytics firm.

The collapse of the mortgage market in 2007 steered more business to the Federal Housing Administration, which insures loans, and Fannie and Freddie, which were taken over by the government in 2008 as rising losses wiped out thin capital reserves. Congress also increased the limits on the size of loans that Fannie, Freddie and the FHA can guarantee, raising the ceiling to as high as $729,750 in high-cost housing markets such as New York and California.

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