Banks need incentives to issue non-agency mortgage-backed securities instead of holding loans in portfolio, according to boosters of the non-agency MBS market. The Federal Reserve’s monetary policies and capital requirements set by federal regulators have played a role in the shift from non-agency MBS issuance to banks holding loans in portfolio. “Historically, major banks were the predominant sponsors of private-label securities transactions, especially for 30-year jumbo fixed-rate loans, which are not a good asset/liability match for their balance sheets,” officials at Redwood Trust noted in a comment letter submitted to the Treasury Department. In June, the Treasury issued a request for comments on how to increase non-agency activity in the mortgage market. In 2013, only 4.8 percent of the estimated $272.0 billion in non-agency jumbo originations were included...