Definition
Single monthly mortality (SMM) is a measure of the prepayment rate of a mortgage-backed security (MBS). As the term suggests, the single monthly mortality measures prepayment in a given month and is expressed as a percentage. For investors of mortgage-backed securities, prepayment of mortgages is usually undesirable since future interest is foregone; investors prefer a lower or declining single mo
In Panel Profits
In the Panel Profits market platform, Single Monthly Mortality (SMM): What it is, How it Works applies standard financial concepts principles to comic assets and physical collections.
Common mistakes
Do not infer unobserved prices.