Default risk Compared to
government bonds, corporate bonds generally have a higher risk of
default. This risk depends on the particular corporation issuing the bond, the current market conditions and governments to which the bond issuer is being compared and the rating of the company. Corporate bond holders are compensated for this risk by receiving a higher yield than government bonds. The difference in yield—called
credit spread—reflects the higher
probability of default, the expected loss in the event of default, and may also reflect liquidity and risk premiums; see
Bond credit rating,
High-yield debt.
Other risks In addition to default risk, as outlined above, there are other risks for which corporate bondholders expect to be compensated through an increased credit spread. This explains, for example, the
Option Adjusted Spread on a
Ginnie Mae mortgage backed security relative to the
Treasury curve. •
Credit spread risk: The risk that the
credit spread of a bond (extra
yield to compensate investors for taking default risk), which is inherent in the fixed coupon, becomes insufficient compensation for default risk that has later deteriorated. As the coupon is fixed, the only way the credit spread can readjust to new circumstances is by the market price of the bond falling and the yield rising to such a level that an appropriate credit spread is offered. (See
CS01.) •
Interest rate risk: The risk that the general level of yields in a bond market, as expressed by government bond yields, may change and thus bring about changes in the market value of fixed-coupon bonds so that their
yield to maturity adjusts to newly appropriate levels. (See
DV01,
bond duration and
bond convexity.) •
Liquidity risk: There may not be a continuous secondary market for a bond, thus leaving an investor with difficulty in selling at, or even near to, a fair price. This particular type of risk may become more severe in developing markets, where a large amount of
junk bonds are issued, such as India, Vietnam, Indonesia, etc. •
Supply risk: Heavy issuance of new bonds similar to the one already held may depress their prices. •
Inflation risk: Inflation reduces the real value of future fixed cash flows. Anticipation of inflation, or actual higher inflation, may depress prices immediately. •
Tax change risk: Unanticipated changes in taxation may adversely impact the value of a bond to investors and consequently its immediate market value. == Corporate bond indices ==