156 Brooks ◼ Financial Management: Core Concepts, 4e
Relationship of Yield to Maturity and Coupon Rate (Slides 6-29 to 6-34)
Typically, an issuing firm gets the bond rated by a rating agency such as Standard &
Poor’s or Moody’s. Then, based on the rating and planned maturity of the bond, it sets
the coupon rate to equal the expected yield as indicated in the Yield Book available in the
capital markets at that time and sells the bond at par value ($1,000). Once issued, if
investors expect a higher yield on the bond, its price will go down and the bond will sell
below par or as a discount bond and vice versa. Thus, a bond’s YTM can be equal to (par
bond), higher than (discount bond), or lower than (premium bond) its coupon rate.
Example 5: Computing YTM
Last year, The ABC Corporation had issued 8% coupon (semiannual), twenty-year,
AA-rated bonds (Par value = $1,000) to finance its business growth. If investors are
currently offering $1,200 on each of these bonds, what is their expected yield to maturity
on the investment? If you are willing to pay no more than $980 for this bond, what is
your expected YTM?
Note: This is a premium bond, so its YTM < Coupon rate.
6.4 Bond Ratings (Slides 6-35 to 6-35)
Rating agencies such as Moody’s, Standard and Poor’s, and Fitch produce bond ratings
ranging from AAA (top-rated) to C (lowest-rated) or D (default). These ratings, which
are based on the issuing firm’s riskiness, can help investors assess the likelihood of
default and assist issuing companies establish a yield on their newly issued bonds.
Junk bonds is the label given to bonds that are rated below BBB. These bonds are
considered to be speculative in nature and carry higher yields than those rated BBB or
above (investment grade).
Fallen angels is the label given to bonds that have had their ratings lowered from
investment to speculative grade.