Journals / Cumhuriyet Üniversitesi İktisadi ve İdari Bilimler Dergisi / 2010 / Cilt: 11 - Sayı: 2

Financial market efficiency: an application on S&P 500 index

Finansal piyasa etkinliği: S&P 500 üzerine bir uygulama

Pages
53–67
Publication Date
2022-10-11
DOI
—
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AI Summary & Key Takeaways

AI Insight
⚡ TL;DR(Too Long; Didn't Read)

The result that were obtained express that the shares in the S&P 500 index act in accordance with random walking hypothesis; in other words, besides showing the efficiency of market in the weak form they express that the prices of the shares in the S&P 500 index are completely independent from the past price movements.

📌 3 Key Takeaways

🎯
Objective & Hypothesis:The concept of financial efficiency has been becoming important between investors day by day, by means of entering the information age.
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Key Findings & Data:In this study, efficiency tests were performed over weekly return series belonging to S&P 500 index that were calculated in a developed country USA.
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Conclusion & Impact:The result that were obtained express that the shares in the S&P 500 index act in accordance with random walking hypothesis; in other words, besides showing the efficiency of market in the weak form they express that the prices of the shares in the S&P 500 index are completely independent from the past price movements.
🔬Design:Research Article
📍Scope:Comprehensive Sample
⚙️Variables:Domain Parameters

Abstract

The concept of financial efficiency has been becoming important between investors day by day, by means of entering the information age. Investors foresee future price movements based on past price movements and they try to predict the future income distribution in this way. Nonetheless, authoritarian of auditing and supervision emphasizes on the efficiency level at the market; especially, in emerging stock exchanges this kinds of studies have been gaining importance. In this study, efficiency tests were performed over weekly return series belonging to S&P 500 index that were calculated in a developed country USA. The result that were obtained express that the shares in the S&P 500 index act in accordance with random walking hypothesis; in other words, besides showing the efficiency of market in the weak form they express that the prices of the shares in the S&P 500 index are completely independent from the past price movements.

Özet

Finansal etkinlik kavramı bilgi çağına girilmesiyle birlikte yatırımcılar arasında günden güne önem kazanmaktadır. Yatırımcılar geçmiş fiyat hareketlerine dayanarak gelecekteki fiyat hareketlerini öngörümlemekte, gelecekteki getiri dağılımlarını bu şekilde tahminlemeye çalışmaktadırlar. Bununla birlikte denetim ve gözetim otoriteri de piyasadaki etkinlik düzeyine önem vermekte, özellikle gelişmekte olan borsalarda bu yönlü çalışmalar ağırlık kazanmaktadır. Bu çalışmada gelişmiş bir ülke niteliğindeki ABD’de hesaplanan S&P500 endeksine ait haftalık getiri serileri üzerinden etkinlik testleri gerçekleştirilmiştir. Elde edilen sonuçlar; S&P 500 endeksinde yer alan hisselerin rassal yürüyüş hipotezine uygun olarak hareket ettiği başka bir ifadeyle piyasanın zayıf formda etkin olduğunu göstermekle birlikte sözkonusu endekse dahil hisselerin fiyatlarının tamamen geçmiş dönem fiyat hareketlerinden bağımsız olduğunu ifade etmektedir.

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Cite This Article

AKKAYA, G. C., DEMİRELİ, E., İBAŞ, E. (2022). Financial market efficiency: an application on S&P 500 index. Cumhuriyet Üniversitesi İktisadi ve İdari Bilimler Dergisi, Cilt: 11 - Sayı: 2, 53–67. https://ajindex.com/articles/480880

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