Publication: Risk Parity Portfolio Optimization under Heavy-Tailed Returns and Time-Varying Volatility
Risk Parity Portfolio Optimization under Heavy-Tailed Returns and Time-Varying Volatility
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Paolella, M., Polak, P., & Walker, P. S. (2023). Risk Parity Portfolio Optimization under Heavy-Tailed Returns and Time-Varying Volatility (No. 4652551; SSRN). https://doi.org/10.2139/ssrn.4652551
Abstract
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Abstract
Risk parity portfolio optimization, using expected shortfall as the risk measure, is investigated when asset returns are fat-tailed and heteroscedastic. The conditional return distribution is modeled by an elliptical multivariate generalized hyperbolic distribution, allowing for fast parameter estimation, via an expectation-maximization algorithm and a semi-closed form of the risk contributions. The efficient computation of non-Gaussian risk parity weights sidesteps the need for numerical simulations or Cornish-Fisher-type approximati
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Citations
Paolella, M., Polak, P., & Walker, P. S. (2023). Risk Parity Portfolio Optimization under Heavy-Tailed Returns and Time-Varying Volatility (No. 4652551; SSRN). https://doi.org/10.2139/ssrn.4652551