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Past Seminars

"Portfolio Selection Under Non-Gaussianity & Systemic Risk" Abderrahim Taamouti,Liverpool University

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Date(s)
November 6, 2024
Location
QBS Conference Hub, Seminar Room 01.012, Queen's Business School, Riddel Hall, 185 Stranmillis Road, Belfast BT9 5EE
Time
13:00 - 14:00

Abderrahim Taamouti

University of Liverpool

"Portfolio Selection Under Non-Gaussianity And Systemic Risk: A Machine Learning Based Forecasting Approach"

Abstract: The Sharpe-ratio-maximizing portfolio becomes questionable under non-Gaussian returns, and it rules out, by construction, systemic risk, which can negatively affect its out-of-sample performance. In the present work, we develop a new performance ratio that simultaneously addresses these two problems when building optimal portfolios. To robustify the portfolio optimization and better represent extreme market scenarios, we simulate a large number of returns via a Monte Carlo method. This is done by first obtaining probabilistic return forecasts through a distributional machine learning approach in a big data setting, and then combining them with a fitted copula to generate return scenarios. Based on a large-scale comparative analysis conducted on the US market, the backtesting results demonstrate the superiority of our proposed portfolio selection approach against several popular benchmark strategies in terms of both profitability and minimizing.

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Queen's Business School
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