New - Reading 44 - Valuation and Analysis: Bonds with Embedded Options Flashcards
What is the most common embedded option found within a bond?
A call option
Why is a Call Option considered a issuer option?
B/c the issuer decides whether to call the bond or not
What is Bermudan style call option?
an option that can be exercised only on a predetermined schedule of dates after the end of the lockout period
Why is a Put Option considered an investor option?
B/c the investor has the right to exercise the option at their discretion
What is an Extentible Bond?
At maturity, the holder has the right to keep the bond for a number of years after maturity, possibly with a different coupon.
What is a Sinking Fund Bond (ie sinker) ?
a bond which requires the issuer to set aside funds over time to retire the bond issue, thus reducing credit risk
What is The Value of a Callable Bond equal to?
Value of Callable Bond =
Value of Straight Bond - Value of Issuer Call Option
What is The Value of Issuer Call Option for a callable bond?
Value of issuer call option =
Value of Straight bond - Value of Callable Bond
What is The Value of a Putable Bond?
Value of Putable Bond =
Value of Straight Bond + Value of investor put option
What is The Value of Investor Put Option on a putable bond?
Value of investor put option =
Value of putable bond - Value of Straight Bond
Does the value of any embedded option increase or decrease with increased volatility?
Whether a put or a call, the value increases as volatility increases
Does the value of a Call Option increase as the yield curve flattens?
It increases.
When the yield curve is steep, it means the 1 yr forward rate on the interest rates tree are high and provides few opportunities to call a bond. As the curve flattens, more nodes on the tree have lower rates presenting more opportunities to be call -> Inceasing their value
Why are put options within bonds considered a hedge against rising interest rates for investors?
B/c as interest rates rise, the value of a bond decreases. It doesn’t decrease as much as it otherwise would because the put limits the value decline. (it creates a floor through which the price will not fall below b/c the investor would put the bond back on the issuer)
What is The Value of a Put Option as the yield curve flatten or inverts?
Decreases
What are the 2 approaches to valuing bonds that are subject to default risk?
- To increase the discount rates above the default free rates to reflect default risk. (This is the industry standard)(This is called the Z-Spread)
- By making the default probabilities explicit- meaning assigning probablities to each time period going forward
Describe what Duration is ?
It measures the sensitivity of the bond’s full price to changes in the bond’s ytm or to changes in benchmark interest rates
What is the only valid duration choice to use for bonds with embedded options?
Effective Duration
How do you calculate Effective Duration?
What does an effective duration on 1.97 indicate?
That a 100bp increase in interest rates would decrease the value of a bond by 1.97%
Is the duration of a callable bond >, =, < that of a straight bond?
≤
Is the duration of a puttable bond >, =, < that of a straight bond?
≤
What are the approximate effective durations for each type of bond listed below?
Cash
Zero-coupon bond
Fixed Rate Bond
Callable Bond
Putable Bond
Floater (Libor flat)
Cash -> 0
Zero Coupon -> ≈ Maturity
Fixed Rate Bond -> < Maturity
Callable Bond -> ≤Duration of Straight bond
Putable Bond -> ≤Duration of Straight bond
Floater(Libor flat) -> ≈Time in yrs to reset
Why is the price senstivity of bonds with embedded options not symmetrical?
If the option is in the money, positive and negative interest rate changes will not have the same effect
What are One Sided Durations ?
Effective durations when interest rates go up or down, which are better at capturing the interest rate sensitivity of bonds with embedded options that do not react symmetrically to positive and negative changes in interest rates of the same magnitude.