Welcome to the Single-Family MBS Disclosure Information Center.
Upon implementation of the Single Security initiative on June 3, 2019, Fannie Mae transitioned to the aligned disclosure formats for MBS, Megas and Multiclass securities. Fannie Mae provides documentation to assist users with the transition. Many of the existing disclosure files were retired and the data transitioned into fewer files with consistent formats between the issuance and monthly files. In addition, the new disclosure files increase the data available for Single-Family securities.
Any questions related to the new disclosures or application can be directed via email to Fixed-Income Marketing or call 800-2FANNIE (800-232-6643).