Aggregator

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DEFINITION of 'Aggregator'

A party involved within the secondary mortgage market that purchases mortgages from financial institutions and then securitizes them into mortgage-backed securities (MBS). Aggregators earn profit by purchasing individual mortgages at lower prices and then selling the pooled MBS at a higher premium.

INVESTOPEDIA EXPLAINS 'Aggregator'

Purchasing an MBS tends to be far less risky compared to purchasing an individual mortgage as the pools of mortgages diversifies the source of the individual mortgage's income stream.

Some mortgage originators also become aggregators as securitizing a pool of mortgages can be seen as a natural extension of their business. Plus, doing so would limit losses incurred to the originator in the event that mortgage rates rise, as typically seen when originators would sell the mortgages into the secondary market.

RELATED TERMS
  1. Mortgage

    A debt instrument, secured by the collateral of specified real ...
  2. Mortgage-Backed Security (MBS)

    A type of asset-backed security that is secured by a mortgage ...
  3. Secondary Mortgage Market

    The market where mortgage loans and servicing rights are bought ...
  4. Primary Mortgage Market

    The market where borrowers and mortgage originators come together ...
  5. Mortgage Originator

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  6. Collateralized Loan Obligation ...

    A security backed by a pool of debt, often low-rated corporate ...
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