A novel robust method for estimating the covariance matrix of financial returns with applications to risk management

Arturo Leccadito (), Alessandro Staino () and Pietro Toscano ()
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Arturo Leccadito: University of Calabria
Alessandro Staino: University of Calabria
Pietro Toscano: Fidelity Investments

Financial Innovation, 2024, vol. 10, issue 1, 1-28

Abstract: Abstract This study introduces the dynamic Gerber model (DGC) and evaluates its performance in the prediction of Value at Risk (VaR) and Expected Shortfall (ES) compared to alternative parametric, non-parametric and semi-parametric methods for estimating the covariance matrix of returns. Based on ES backtests, the DGC method produces, overall, accurate ES forecasts. Furthermore, we use the Model Confidence Set procedure to identify the superior set of models (SSM). For all the portfolios and VaR/ES confidence levels we consider, the DGC is found to belong to the SSM.

Keywords: Value at risk; Expected shortfall; Gerber statistic; Model confidence set; Superior set of models; C51; C52; C58; G15 (search for similar items in EconPapers)
Date: 2024
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DOI: 10.1186/s40854-024-00642-2

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