Merli, Maxime; Schatt, Alain - Université de Bourgogne - CREGO EA7317 Centre de … - 2007
The object of this paper is to study the impact of successive changes in ratings of the leading firm on non rated firms belonging to the same stock index sector. Two courses of research are being mobilized regarding, on the one hand, the incidence of downgrading of ratings on the value of the...