Consider a $400 million pass-through MBS that has just been created (so the 'seasoning' of the pass-through is equal to 0). The underlying pool of mortgages each has a maturity of 20 years and an annual mortgage coupon rate of 6%. The pass-through rate of the mortgage pool is 5% and the total number of prepayments if the rate of prepayments increases to 200 PSA is 268.15.
Suppose we construct principal-only (PO) and interest-only (IO) mortgage-backed securities (MBS) using the mortgage pass-through of the above question. Assume a prepayment multiplier of 100 PSA. What is the present value of the PO MBS if we use an annual risk-free rate of 4.5% to value the cash-flows?
As per the Given Information we need to calcukate the Present value of the PO MBS with the assumtion of the 4.5% Risk-Free Return.
Given,
Future Value = $400 Million
Maturity (n No. of Years) = 20 Years.
Risk Free rate = 4.5%
Present Value = ?
The Calculation can be done by the Following formula.
Present Value = Future Value / (1+r)^n
Here,
Future Value = $400 Million
R (Risk free rate) = 4.5
N (number of Years) = 20
Hence,
Present value = $400/(1+4.5%)^20
.: Present Value = $165.86.
Get Answers For Free
Most questions answered within 1 hours.