Proposing a portfolio optimization model based on the GARCH-EVT-Copula combined approach

سال انتشار: 1402
نوع سند: مقاله ژورنالی
زبان: انگلیسی
مشاهده: 60

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شناسه ملی سند علمی:

JR_IJNAA-14-6_015

تاریخ نمایه سازی: 18 شهریور 1402

چکیده مقاله:

This study aims at optimizing the portfolio of financial assets and in particular focuses on the stock market with conditional value at risk (CVaR) as the portfolio risk measure. This study uses generalized conditional heterogeneity variance methods, the dependency structure, the extreme value theory, and with the GARCH-EVT-Vine-Copula approach to optimize the portfolio and minimize the CVaR of a stock portfolio during a certain period by the re-weighting method. Modeling is based on the performance data of ۷ companies among the top ۵۰ listed companies during the period ۲۰۱۵ to ۲۰۲۱. The results show that considering the extreme values and structural dependence between the examined time series improves the risk identification between these markets. In addition, among the studied models, the out-of-sample results for the accumulated wealth function of different models show that when considering the dependence structure, the EGARCH-EVT model based on the Coppola Vine function results outperforms other models.

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نویسندگان

Abdullah Alishavandi

Department of Financial Management, Central Tehran Branch, Islamic Azad University, Tehran, Iran.

Mehrzad Minouei

Department of Industrial Management, Central Tehran Branch, Islamic Azad University, Tehran, Iran

Mirfaiz FallahShams

Department of Financial Management, Central Tehran Branch, Islamic Azad University, Tehran, Iran.

Gholamreza Zomorodian

Department of Financial Management, Central Tehran Branch, Islamic Azad University, Tehran, Iran

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