Question: Question 1 MBS Part (a) . Complete the following table assuming a prepayment rate of 140 PSA: Original balance: $150,000,000 Pass-through rate: 7% WAM: 360

Question 1 MBS

Part (a). Complete the following table assuming a prepayment rate of 140 PSA:

Original balance: $150,000,000

Pass-through rate: 7%

WAM: 360 months

month

outstanding balance

SMM

mortgage payment

interest

scheduled principal repayment

Pre-payment

Total principal repayment

Cash flow

1

$150,000,00

0.023%

$1,316,357.36

$875,000

$441,357.36

$34,941.88

$476,299.24

$1,351,299.24

2

$148,648,700.76

0.047%

$1,316,357.36

$867,117.42

$449,239.93

$69,337.90

$518,577.83

$1,385,695.25

3

? ?

$1,316,357.36

?

$457,323.16

? ? ?

Note: you don't have to replicated the entire table in your answer. Showing the workings and values of all missing items of Month 3 suffices.

Part (b). Suppose you own a mortgage pass-through security as described in Part (a). Describe the influence of a decrease in mortgage rates on the total return of the mortgage backed security as compared to an otherwise identical plain vanilla bond.

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