Forschungskolloquium - Pro-Cyclicality of Traditional Risk Measurements
Wann
Dienstag, 23. April 2019
15:15 bis 16:45 Uhr
Wo
F425
Veranstaltet von
Lehrstuhl für Ökonometrie
Vortragende Person/Vortragende Personen:
Michel Dacorogna (Universität Zürich)
Pro-Cyclicality of Traditional Risk Measurements: Quantifying and Highlighting Factors at its Source
Abstract
Since the introduction of risk-based solvency regulation, pro-cyclicality has been a subject of concerns from all market participants. Here, we lay down a methodology to evaluate the amount of pro-cyclicality in the way financial institutions measure risk, and identify factors explaining this pro-cyclical behavior.
We introduce a new indicator based on the Sample Quantile Process (SQP, a dynamic generalization of Value-at-Risk), conditioned on realized volatility to quantify the pro-cyclicality, and evaluate its amount in the markets, considering 11 stock indices as realizations of the SQP. Then we determine two main factors explaining the pro-cyclicality: the clustering and return-to-the-mean of volatility, as it could have been anticipated but not quantified before, and, more
surprisingly, the very way risk is measured, independently of this return-to-the-mean effect.