Mortgage-Backed Securities Carolina Olsson Rebecca Nygårds-Kers MBS
Object for today Securitization Mortgage securities MBS Different types of MBS Risks
Securitization Securitization is the process of aggregating similar instruments, such as loans or mortgages, into a negotiable security. Investors Creditors Financial institution Privat Company/ Agency Action to improve the creditability
What is mortgage loan? A contract between two parties, a borrower and a lender What is mortgage security? A security made out of mortgage loans
MBS Mortgage backed security (MBS) is a security that is based on a pool of underlying mortgages OriginatorsPoolInvestors Bank Agency Private Corp. "mortgage pass-through" corporations Life insurance companies Pension funds
MBS Players in the secondary market : GNMA – Government National Mortgage Association FNMA – Federal National Mortgage Association FHLMC – Federal Home Loan Mortgage Corporation
Different types of MBS Collateralized mortgage obligations Stripped Mortgage-Backed securities
CMO Bonds that represent claims to specific cash flows from large pools of home mortgages Sequential pay Tranches Planned Amortization Class (PAC) Tranches. Targeted Amortization Class (TAC) Tranches Z-Tranches Principal-Only (PO) Securities Interest-Only (IO) Securities Floating-Rate Tranches Diffrent types of CMOs
Stripped MBS The cash flows from the underlying mortgage loans are divided to create two or more new securities. Principal-only (PO) and interest-only (IO).
Risks Prepayment Risk Average life Market Risk
Prepayment risk Prepayment can occur when the houseowner is selleing their house or refinancing the mortgage. The investor in a MBS is assumed a risk that the MBS will pay principal faster or slower than expected.
Average life When talking about the maturity date of Mortgage securities, we are talking about the average life of the security. The average life is the average time that each principal dollar in the pool is expected to be outstanding, based on certain assumptions about prepayment speeds.
Market risk The market risk is the risk that the price of the security may fluctuate over time
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