In this paper, we consider a new corporate bond-pricing model with credit-rating migration risks and a stochastic interest rate. In the new model, the criterion for rating change is based on a predetermined ratio of the corporation’s total asset and debt. Moreover, the rating changes are...

Do rating announcements reduce information asymmetries? We investigate the effect of rating disclosures on the volatility and liquidity of the US bond market. Although rating agencies' decisions often are anticipated by credit spread changes, we show that in the case of no regulatory change...