Mortgage-Backed Securities

Agency MBS
Agency MBS is a mortgage-backed security tied to agency-backed or agency-guaranteed mortgage pools.
Fannie Mae
Fannie Mae is a government-sponsored enterprise that supports a large part of the conventional conforming mortgage market.
Freddie Mac
Freddie Mac is a government-sponsored enterprise that supports a large part of the conventional conforming mortgage market.
Ginnie Mae
Ginnie Mae is the government corporation tied to guarantees on certain mortgage-backed securities backed by government-loan programs.
Loan Sale
A loan sale is the transfer of mortgage ownership or economic interest from the original lender to another party after origination.
Mortgage Investor
A mortgage investor is the party that owns or economically benefits from a mortgage after origination.
Mortgage Servicing Rights (MSR)
Mortgage servicing rights are the rights to service a mortgage account and collect the related servicing fee income.
Mortgage-Backed Securities
Mortgage-backed securities terms that explain the secondary mortgage market, loan sales, servicing rights, and the behind-the-scenes structure shaping many home loans.
Mortgage-Backed Security (MBS)
A mortgage-backed security is an investment security backed by a pool of mortgage loans.
Non-Agency MBS
Non-agency MBS is a mortgage-backed security that does not rely on the standard agency-backed or agency-guaranteed framework.
Pass-Through Security
A pass-through security is a mortgage-backed security structure that passes principal and interest cash flow from pooled mortgages through to investors.
Secondary Mortgage Market
The secondary mortgage market is the market where closed mortgages are sold, bought, pooled, or financed after origination.
Securitization
Securitization is the process of pooling mortgage loans and turning them into securities that can be sold to investors.
To-Be-Announced (TBA) Market
The TBA market is the forward-trading market for many agency mortgage-backed securities before the exact underlying pools are specified.
Whole Loan
A whole loan is an individual mortgage sold or held as a single loan asset rather than as part of a pooled security.