Shortfall Deviation Risk: An Alternative for Risk Measurement
29 Pages Posted: 19 Dec 2014 Last revised: 11 May 2016
There are 2 versions of this paper
Shortfall Deviation Risk: An Alternative for Risk Measurement
Shortfall Deviation Risk: An Alternative for Risk Measurement
Date Written: May 10, 2016
Abstract
We present the Shortfall Deviation Risk (SDR), a risk measure that represents the expected loss that occurs with certain probability penalized by the dispersion of results that are worse than such an expectation. SDR combines Expected Shortfall (ES) and Shortfall Deviation (SD), which we also introduce, contemplating two fundamental pillars of the risk concept – the probability of adverse events and the variability of an expectation – and considers extreme results. We demonstrate that SD is a generalized deviation measure, whereas SDR is a coherent risk measure. We achieve the dual representation of SDR, and we discuss issues such as its representation by a weighted ES, acceptance sets, convexity, continuity and the relationship with stochastic dominance. Illustrations with real and simulated data allow us to conclude that SDR offers greater protection in risk measurement compared with VaR and ES, especially in times of significant turbulence in riskier scenarios.
Keywords: Shortfall deviation risk, risk management, risk measures, coherent risk measures, generalized deviation measures.
JEL Classification: C60, G10
Suggested Citation: Suggested Citation