DEFINITION of 'Mortgage Pool'

A group of mortgages held in trust as collateral for the issuance of a mortgage-backed security. Some mortgage-backed securities issued by Fannie Mae, Freddie Mac and Ginnie Mae are known as "pools" themselves. These are the simplest form of mortgage-backed security. They are also known as "pass-throughs" and trade in the to-be-announced (TBA) forward market.

BREAKING DOWN 'Mortgage Pool'

Pass-throughs or pools are comprised of mortgages with close to the same maturity and interest rate. A pool of mortgages that backs a more complex mortgage-backed security or CDO, however, might consist of mortgages of more varying interest rates and characteristics.

RELATED TERMS
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  2. Pool Factor

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  3. MBS Pool Number

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RELATED FAQS
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    Fannie Mae is a government-sponsored enterprise (GSE) established in 1938 to expand the flow of mortgage money by creating ... Read Answer >>
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    A Ginnie Mae, or Government National Mortgage Association security, functions similarly to the process of lending someone ... Read Answer >>
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