Question

In: Finance

"Suppose that the risk-free zero curve is flat at 7% per annum with continuous compounding and...

"Suppose that the risk-free zero curve is flat at 7% per annum with continuous compounding and that defaults can occur halfway through each year in a new five-year credit default swap. Suppose that the recovery rate is 30% and the hazard rate is 3%.

a. Estimate the credit default swap spread. Assume payments are made annually.

b. What is the value of the swap per dollar of notional principal to the protection buyer if the credit default swap spread is 150 basis points?

c. What is the credit default swap spread in Problem 25.8 if it is a binary CDS? "

Solutions

Expert Solution

The table corresponding to Tables 23.2, giving unconditional default probabilities, is

Time (years)

Probability of surviving to year end

Default Probability during year

1

0.9704

0.0296

2

0.9418

0.0287

3

0.9139

0.0278

4

0.8869

0.0270

5

0.8607

0.0262

The table corresponding to Table 23.3, giving the present value of the expected regular payments (payment rate is per year), is

Time (yrs)

Probability of survival

Expected Payment

Discount Factor

PV of Expected Payment

1

0.9704

0.9704s

0.9324

0.9048s

2

0.9418

0.9418s

0.8694

0.8187s

3

0.9139

0.9139s

0.8106

0.7408s

4

0.8869

0.8869s

0.7558

0.6703s

5

0.8607

0.8607s

0.7047

0.6065s

Total

3.7412s

The table corresponding to Table 23.4, giving the present value of the expected payoffs (notional principal =$1), is

Time (yrs)

Probability of default

Recovery Rate

Expected Payoff

Discount Factor

PV of Expected Payment

0.5

0.0296

0.3

0.0207

0.9656

0.0200

1.5

0.0287

0.3

0.0201

0.9003

0.0181

2.5

0.0278

0.3

0.0195

0.8395

0.0164

3.5

0.0270

0.3

0.0189

0.7827

0.0148

4.5

0.0262

0.3

0.0183

0.7298

0.0134

Total

0.0826

The table corresponding to Table 23.5, giving the present value of accrual payments, is

Time (yrs)

Probability of default

Expected Accrual Payment

Discount Factor

PV of Expected Accrual Payment

0.5

0.0296

0.0148s

0.9656

0.0143s

1.5

0.0287

0.0143s

0.9003

0.0129s

2.5

0.0278

0.0139s

0.8395

0.0117s

3.5

0.0270

0.0135s

0.7827

0.0106s

4.5

0.0262

0.0131s

0.7298

0.0096s

Total

0.0590s


The credit default swap spread is given by:

3.7412s+0.0590s = 0.0826


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