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Petrolün Portföy Optimizasyonu İçin Önemi: Borsa İstanbul’da Yer Alan Petrokimya Plastik Firmaları Üzerine Bir Uygulama
2019
Journal:  
Trends in Business and Economics
Author:  
Abstract:

Bu çalışma petrol ve petrokimya plastik sektöründeki firmalar arasındaki oynaklık yayılımını ölçüp buradan elde edilecek varyans ve kovaryans serileri ile portföy optimizasyonuna bakmayı amaçlamaktadır. Veriler 9 Haziran 2015 ve 3 Mayıs 2019 tarihleri arasını kapsamakta olup, Batı Texas ham petrol ve Borsa İstanbul’daki 20 petrokimya plastik firma hisse senetleri fiyatları kullanılmıştır. Oynaklık yayılımı için DCC-GARCH modelinden yararlanılmıştır. Portföy optimizasyonu için petrol ve tüm firmaların ortalama ağırlıkları ve optimal hedge oranları hesaplanılmıştır. Yapılan analizler sonucunda, petrol ve 11 firma hisse senetleri arasında önemli derecede oynaklık yayılımı mevcuttur. Ayrıca portföy optimizasyonundan çıkan sonuçlar, optimal bir portföy için petrolün önemini göstermektedir. Yatırımcılar petrol varlığı yerine daha çok firma hisse senetlerine yatırım yaparak risklerini minimize edebilirler.

Keywords:

Importance for Petroleum Portfolio Optimization: A App on Petrochemical Plastic Companies located in the Stock Exchange in Istanbul
2019
Author:  
Abstract:

This study aims to measure the gap between companies in the oil and petrochemical plastic sector and to look at the portfolio optimization with the variants and covaryans series that will be obtained from here. The data covered between June 9, 2015 and May 3, 2019 and the West Texas crude oil and stock prices of 20 petrochemical plastic companies in the Stock Exchange of Istanbul were used. The DCC-GARCH model has been used for gaming spread. For portfolio optimization, the average weights and optimal hedge rates of oil and all companies are calculated. As a result of the analysis, there is a significant gap between oil and 11 company shares. The results from portfolio optimization also show the importance of oil for an optimal portfolio. Investors can minimize their risks by investing more in company shares instead of oil assets.

Keywords:

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Trends in Business and Economics

Journal Type :   Uluslararası

Metrics
Article : 1.262
Cite : 14.293
2023 Impact : 0.623
Trends in Business and Economics