Fixed Income Flashcards
Current Yield
= annual cash coupon payment / bond price
Disc: CPN < current yield < YTM
Prem: CPN > current yield > YTM
YTM in a bond assumes…
Bond held to maturity
All payments made
Coupon payments reinvested at YTM
Semi-annual pay bond inputs
N = yrs * 2 PMT = coupon/2 i = discount rate/2 FV = par value PV = -amount paid
Zero coupon bonds
Always solved as semi annual pay bonds with PMT = 0
Most price sensitive
Premium bond
Coupon rate > YTM
PV > par
Discount bond
Coupon < YTM
PV < par value
Convexity
Price increase from decrease in yield is larger than price decrease from increase in yield
Maturity effect
Other things equal, value of bonds with longer maturities is more sensitive to a change in YTM
Coupon effect
Other things equal, value of bonds with lower coupon is more sensitive to change in YTM
Calculate the price of a bond one year after issuance if the yield does not change
N = # yrs - 1
For semi-annual pay bond:
N = (#yrs - 1) • 2
All other inputs stay the same
Valuing a bond using spot rates
Given spot rates S1, S2, S3…
Value of bond
= PMT/ (1+S1)
+ PMT/ (1 + S2)^2
+ (Par + PMT) /(1 + S3)^3
Discount each CF to represent value
Matrix pricing
Use YTM of traded bonds of same credit quality to estimate bond YTM
- average of YTMs for same maturity
- linear interpolation to adjust for diff in maturities
Effective yield on a semi - annual pay bond
= [(1 + YTM/2)^2] - 1
Yield -to-first call
Calculate YTM using number if semiannual periods until the first call date and the call price for FV
Option adjusted yield
OAY < YTM for a callable bond because callable bonds have higher yields to compensate bondhders for call option
Forward rates:
1y1y=
1 year rate, 1 year from now
Implied forward rates
(1+ S3)^3 =
(1 + S1) • (1 + 1y1y) • (1 + 2y1y)
(1 + S1) • (1 + 1y2y)^2
(1 + S2)^2 • (1+ 2y1y)