Afonso, António (contributor); Gomes, Pedro (contributor); … - European Central Bank - 2014
The reaction of EU bond and equity market volatilities to sovereign rating announcements (Standard & Poor's, Moody …'s, and Fitch) is investigated using a panel of daily stock market and sovereign bond returns. The parametric volatilities are …, but downgrades increase stock and bond market volatility. Contagion is present, with sovereign rating announcements …