MSCI-İslami Endekslerin Getiri Dağılımı: 2008 Küresel Krizi İle COVİD-19 Salgınının Karşılaştırılması

Öz

İslami borsa endeksleri farklı kriterlere göre derlendikleri için geleneksel borsalardan ayrı fiyat dinamiklerine sahip olması beklenir. Bu çalışmada gelişmiş ve gelişmekte olan ülke MSCI-Islami borsa endekslerinin 2008 ve COVID-19 kriz dönemlerindeki getiri özellikleri ARMA-GARCH modelleri ile araştırılmıştır. Çalışmanın bulguları MSCI-İslami endekslerin getirilerinin birçok finans teorisinde esas kabul edilen normal dağılıma uymadığını göstermektedir. ABD doları cinsinden ölçülen getirilerde risk primi istatistiksel olarak anlamlı bulunmaz iken, tüm borsalarda oynaklığın kalıcı olduğu ampirik olarak kanıtlanmıştır. Borsalarda asimetrik oynaklık daha çok 2008 krizinde gözlemlenmiştir. Sadece Japonya borsasının getirilerinin incelenen her iki kriz döneminde öngörülebilir olduğu çalışmada rapor edilmiştir. Genel olarak MSCI-İslami borsa endeksleri kendi aralarında farklı getiri özelliklerine sahip olsalar da büyük çapta fiyat değişimlerinin ve spekülatif işlemlerin tüm borsalarda sıklıkla yaşandığı göze çarpmıştır.

Anahtar Kelimeler

• Getiri Dağılımı
• Tematik Endeksler
• Finansal Krizler

MSCI-Islamic Indices Return Distribution : A Comparison Of 2008 Global Crisis and the COVID-19 Epidemic

Abstract

Islamic stock market indices are compiled according to different criteria, so they have expected to have different price dynamics from traditional stock markets. The study investigates the return characteristics of developed and developing country MSCI-Islamic stock market indices during the 2008 and COVID-19 crisis periods by using ARMA-GARCH models. The findings of the study show that the returns of MSCI-Islamic indices do not comply with the normal distribution, which is considered essential in many finance theories. While the risk premium is not statistically significant for returns denominated in US dollars, it has been empirically proven that volatility is permanent in all stock markets. Asymmetric volatility in stock markets was mostly observed in the 2008 crisis. It was reported that only the returns of the Japanese stock market were predictable in both crisis periods. Although MSCI-Islamic stock market indices generally have different return characteristics among themselves, it has been noted that Large-Scale Price Changes and speculative transactions are frequently experienced in all stock markets.

Keywords

• Return Distribution
• Thematic Indexes
• Financial Crises

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