Bank Risk: Does Size Matter?
25 Pages Posted: 28 Nov 2011
Date Written: November, 27 2011
Abstract
The size of banks is examined as a determinant of bank risk. A wide range of banks are examined across four regions, including Australia, Canada, Europe and the USA. Four risk metrics are considered including Value at Risk (VaR), Conditional Value at Risk (CVaR, which measures risk beyond VaR), Probability of Default (PD) using Merton structural methodology, and Conditional Probability of Default (CPD, the author’s own model which measures risk based on extreme asset value fluctuations. Daily equity and asset value fluctuations are included in the analysis, including pre-GFC and GFC periods. In addition to examining size in isolation as a determinant of bank risk, the paper uses fixed effects panel data regression to examine the significance of size as a risk determinant in conjunction with a range of other independent variables. The study finds mixed results among the four regions with no conclusive evidence of significant association between size and risk.
Keywords: Bank Risk, Value at Risk, Conditional Value at Risk, Probability of Default, Conditional Probability of Default
JEL Classification: G01, G21, G28
Suggested Citation: Suggested Citation
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