0000000001145162
AUTHOR
Carlos Salvador Muñoz
Potential spillovers from the banking sector to sovereign credit ratings
The global financial crisis and European sovereign debt crisis underlined the links between the banking sector and sovereign risk. This paper uses a machine learning technique (random forest regres...
Bank rating migrations before and since the onset of the financial crisis
This paper analyses bank rating dynamics in Europe and the United States from 2000 to 2016. In particular, two questions are addressed: (i) whether the rating agencies replicate prior changes in ra...
Financial Crisis and Bank Ratings
El principal objetivo de esta tesis doctoral es el análisis del comportamiento de las agencias de calificación cuando evalúan a las entidades bancarias así como el efecto que tienen sus ratings sobre los mercados financieros antes y durante la crisis financiera que se inicia en el año 2007. Si bien es cierto que en la literatura existen numerosos trabajos que se centran en el estudio de los ratings soberanos en cuanto a modelización e impacto que tienen los ratings en los mercados financieros, prácticamente ninguno de ellos se centra en el caso de los ratings bancarios y menos en el contexto de crisis financiera. El segundo capítulo de la tesis doctoral tienen como principal objetivo el aná…
Disentangling the sources of sovereign rating adjustments: An examination of changes in rating policies following the GFC
Abstract This paper disentangles and quantifies the sources of sovereign rating adjustments issued by the main rating agencies (Fitch, Standard and Poor's and Moody's) because of the global financial and European sovereign debt crises. We use a methodology (Rating Adjustment Decomposition) that allows us to decompose and quantify the portion of the rating adjustments motivated by changes in economic, financial and institutional quality factors (Δeconomic situation) and by changes in CRAs’ rating policies (Δrating policy). A third component (misprediction) is considered as the measure relies on a set of prediction exercises. Using 3,581 sovereign ratings from 104 (developed and developing) c…