Neither Freddie Mac nor its regulator, the Federal Housing Finance Agency, purposefully limited refinancing opportunities in order to protect the value of the GSE’s investment portfolio, concluded a report by the FHFA’s official watchdog last week. The FHFA’s Office of Inspector General said it found “no evidence” that the GSE or the Finance Agency obstructed homeowners’ abilities to refi in an effort to influence the yields of inverse floating-rate bonds.