The Federal Housing Finance Agency is mandating that Fannie Mae and Freddie Mac each enter into $30 billion of “risk sharing” transactions this year and move a little more quickly to reduce their $1.19 trillion of on-balance sheet holdings, including whole loans and non-agency MBS. The edict comes directly from FHFA Acting Director Edward DeMarco, who provided few details about the initiative during a speech this week to the National Association for Business Economics. DeMarco also announced that the regulator intends to set up a new government entity that will develop and manage the common MBS securitization platform that’s been in the works for the two government-sponsored entities. One reason for pushing the GSEs to test drive risk-sharing structures is...