Freddie Mac will publish a new set of disclosures to help the market track the exchange of its legacy MBS with a 45-day payment delay to a 55-day cycle under the new Single Security, according to a new update from the government-sponsored enterprise. A key disclosure involves the creation of “mirror securities” that help investors track how much of an existing MBS has been exchanged for the new securities. Mirror securities will be created for Freddie’s current participation certificates as well as second-level Giants that are comprised of PCs. Before new Single Securities are created, Freddie will create...