Mortgage-Backed Securities (MBS) are debt obligations packaged and sold by entities like Fannie Mae.
Mortgage-Backed Securities (MBS) are a type of asset-backed security that is secured by a collection of mortgages. These securities represent claims to the cash flows from pools of mortgage loans, most commonly on residential property. They are sold to investors by financial institutions like Fannie Mae, Freddie Mac, and Ginnie Mae in the United States.
MBS are essentially a form of securitization, which involves transforming a pool of illiquid assets (mortgage loans) into tradable financial instruments. The process follows these general steps:
Origination: Borrowers take out mortgage loans from financial institutions.
Pooling: The originating institution pools multiple mortgage loans together.
Securitization: The pooled mortgage loans are sold to a special purpose vehicle (SPV) or trust, which then issues securities backed by the mortgage pool.
Issuance: The MBS are sold to investors through capital markets.
Payments: Investors receive periodic payments (monthly, quarterly, etc.) that represent the principal and interest payments made by the borrowers of the underlying mortgages.
These are the simplest form of MBS. Investors receive a pro-rata share of principal and interest payments from the underlying pool of mortgages.
CMOs are more complex and are divided into tranches—or slices—that prioritize different levels of risk and return. Each tranche has its own maturity and yield characteristics.
These are divided into Interest-Only (IO) and Principal-Only (PO) components. Investors can choose whether they want to receive only interest payments or principal payments.
The risk that the borrower will default on their mortgage payments, thus affecting the cash flow to the investor.
The risk that mortgage borrowers will pay off their loans early, usually when interest rates fall, which can affect the yield of the MBS.
The risk associated with fluctuations in interest rates, which can affect the value of the MBS and its yield.
Institutional investors such as pension funds, insurance companies, and mutual funds invest in MBS to achieve a diversified portfolio with periodic income.
Individual investors can invest in MBS through mutual funds or exchange-traded funds (ETFs) that specialize in mortgage-backed securities.
MBS are a subtype of ABS, but the underlying assets are mortgage loans.
Entities like Fannie Mae and Freddie Mac that issue MBS are considered GSEs and are crucial for the housing finance system.