MBS News and Anouncements

New Multifamily Fixed-Rate Mortgage-Backed Security Prefixes

Fannie Mae has created six new prefixes that will be assigned to Multifamily mortgage-backed securities (MBS) pools. These prefixes are available for fixed-rate mortgages delivered into MBS with issue dates on or after June 1, 2018.

New Multifamily Fixed-Rate MBS PrefixesDescription
H4 Conventional, Balloon, Actual/360 interest day basis calculation; Multifamily; maturing or due in greater than thirty (30) years but less than forty (40) years.
HZ Conventional, Balloon, Actual/360 interest day basis calculation; Multifamily; maturing or due in greater than thirty (30) years.
M4 Conventional Balloon, Level-Payment Mortgages; Multifamily; maturing or due in greater than thirty (30) years.
MZ Conventional Long-Term, Level-Payment Mortgages; Multifamily; maturing or due in greater than thirty (30) years.
Q4 Conventional Balloon, Level-Payment Mortgages using Actual/360 interest day basis calculation method and P&I based on note rate multiplied by 365 and then divided by 360; Multifamily; maturing or due in greater than thirty (30) years.
QZ Conventional Long -Term, Level-Payment Mortgages using Actual/360 interest day basis calculation method and P&I based on note rate multiplied by 365 and then divided by 360; Multifamily; maturing or due in greater than thirty (30) years.

The Pool Prefix Glossary has been updated to include the new prefixes.

For questions, please contact Fannie Mae's Investor Help Line at 1-800-232-6643 or by email.