Valuing Risky Fixed Rate Debt: An Extension
提出了一个同时考虑提前违约和利率风险的公司债券估值模型，修正了以往模型中破产支付不超过公司价值的缺陷，并捕捉了绝对优先规则的偏离，能产生多样化的收益率差期限结构形状。
This paper develops a corporate bond valuation model that takes into account both early default and interest rate risk. It corrects a defect of recent contributions where pricing equations do not assure that the payment to bondholders upon bankruptcy is no greater than firm value. The bankruptcy-triggering mechanism is directly related to the payoff received by bondholders when early bankruptcy is forced upon the firm. More specifically, the default barrier is defined simply as a fixed quantity discounted at the riskless rate up to the maturity date of the risky corporate bond. As soon as this threshold is crossed, bondholders receive an exogenously specified fraction of the remaining assets. Deviations from the absolute priority rule also are captured. Because it accounts for Gaussian interest rate uncertainty, default risk, and deviations from the absolute priority rule, this model is capable of producing quite diverse shapes for the term structure of yield spreads.