We propose several connectedness measures built from pieces of variance decompositions, and we argue that they provide natural and insightful measures of connectedness among financial asset returns and volatilities. We also show that variance decompositions define weighted, directed networks, so...

We propose several connectedness measures built from pieces of variance decompositions, and we argue that they provide natural and insightful measures of connectedness among financial asset returns and volatilities. We also show that variance decompositions define weighted, directed networks, so...

The recent Global Financial Crisis has focused our attention on the integrity of rating agencies. Often condemned for being too slow to act, rating agencies have been blamed during many financial crises. This impression opens some research questions addressed in this paper. What are the...