What is the fixed income security that is created with a pool of mortgages called?

The fixed income security created with a pool of mortgages is called a mortgage-backed security (MBS). This financial instrument is designed to channel the cash flows from a collection of mortgage loans into securities that can be sold to investors.

Here's how it works: when a borrower takes out a mortgage, their monthly payments contribute to a pool of payments from many different mortgages. The entity that issues the MBS collects these payments and uses them to pay investors in the MBS, creating a steady stream of income. This structure allows investors to invest in real estate without having to take on the individual risks associated with specific properties or loans.

In contrast, while a mortgage bond is a type of bond secured by a mortgage or pool of mortgages, it does not specifically refer to the types of payments that arise from the pooled mortgages like an MBS does. A real estate investment trust (REIT) involves pooling money to invest in real estate but operates differently as it owns and operates real estate rather than securitizing a mortgage pool. Cash equivalent securities typically refer to very liquid short-term investments that can quickly be converted to cash, which is not relevant to the pooling of mortgage payments.

Therefore, the definition and structure of mortgage-backed securities uniquely position them as fixed