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Using the following interest rate tree of semiannual interest rates what is the value of an option free bond that has one year remaining to maturity and has a 5% semiannual coupon rate?
        7.30%
6.20%
        5.90%
A)
98.67.
B)
98.98.
C)
97.53.



The option-free bond price tree is as follows:

100.00

A → 98.89

98.67100.00
99.56
100.00


As an example, the price at node A is obtained as follows:
PriceA = (prob × (Pup + (coupon / 2)) + prob × (Pdown + (coupon / 2)) / (1 + (rate / 2)) = (0.5 × (100 + 2.5) + 0.5 × (100 + 2.5) / (1 + (0.0730 / 2)) = 98.89. The bond values at the other nodes are obtained in the same way.

The calculation for node 0 or time 0 is
0.5[(98.89 + 2.5) / (1+ 0.062 / 2) + (99.56 + 2.5) / (1 + 0.062 / 2)] =
0.5(98.3414 + 98.9913) = 98.6663

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The use of which of the following benchmarks to generate a spread would not reflect credit risk?
A)
A U.S. Treasury benchmark.
B)
A global industry-yield benchmark.
C)
An issuer-specific benchmark.



An issuer-specific benchmark (another bond of the same company) would not reflect credit risk because the benchmark would incorporate the credit risk of the firm. Using a U.S. Treasury benchmark would reflect credit risk because the bond to be evaluated would have higher credit risk than either benchmark. The yield in a global industry is not typically used as a benchmark.

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Which of the following spreads will reflect the option risk in a callable bond?
A)
The Z-spread only.
B)
Both the nominal spread and the Z-spread.
C)
The OAS only.



The OAS is the option-adjusted spread. It is determined using a binomial tree where a spread (the OAS) is added to the benchmark yield to find the arbitrage-free value for the callable or putable bond. The arbitrage-free value is the imputed value equal to the current bond price. The OAS is referred to as an option-adjusted spread because the cash flows in the tree are adjusted to reflect the option of the bond (e.g. a callable bond’s price is capped at the call price when interest rates drop). The nominal spread is simply the bond’s yield minus the benchmark yield. The Z-spread is the spread that, when added to the spot rates from a yield curve, results in an imputed value equal to the bond’s current price. The nominal spread and the Z-spread do not adjust the cash flows for the bond’s option. Thus the calculated yield spread using both these measures will reflect the option risk in the bond, as well as the bond’s credit and liquidity risk. Because the OAS calculation adjusts the cash flows for the bond’s option-like characteristics, the calculated OAS is just a reflection of the bond’s credit and liquidity risk, relative to the benchmark spot rates.

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Which of the following benchmarks would generate the greatest spread when used to examine a bond yield?
A)
A U.S. Treasury security.
B)
Bond sector benchmark.
C)
The issuer of a specific company.



The U.S. Treasury security would generate the highest spread because the yield on Treasury securities will be the lowest as they have the lowest credit and liquidity risk. The yields on a bond sector benchmark and for a specific company will be higher.

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The purpose of relative value analysis is to determine:
A)
the return differential from riding the yield curve.
B)
whether a bond is fairly valued using a benchmark yield.
C)
whether a stock is fairly valued using present value calculations.



The purpose of relative value analysis is to determine whether a bond is fairly valued. The bond’s spread over some benchmark is compared to that of a required spread to determine whether the bond is fairly valued. The required spread will be that available on comparable securities.

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The following are the yields on various bonds. The relevant benchmark is that of the bond sector.
Treasury Bond Yield   3.00%
Bond Sector Yield   3.25%
Comparable Bond Yield   5.75%
ABC Bond Yield   5.50%

Is the ABC bond undervalued or overvalued and why? Using relative value analysis, the ABC bond is:
A)
overvalued because its spread is less than that of comparable bonds.
B)
undervalued because its yield is less than that of Treasuries.
C)
undervalued because its spread is less than that of comparable bonds.



The purpose of relative value analysis is to determine whether a bond is fairly valued. The bond’s spread over some benchmark is compared to that of a required spread to determine whether the bond is fairly valued. The required spread will be that available on comparable securities. In this example, the relevant benchmark was the bond sector. The spread for ABC bonds over the bond sector was 2.25%. The spread for comparable bonds over the bond sector was 2.50%. The lower spread for ABC bonds means that they are relatively overvalued (their price is high because their yield is lower).

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