Gelişmiş ve gelişmekte olan ekonomilerde sermaye piyasaları
tasarrufların yatırıma dönüşmesinde büyük rol oynamaktadır. Yatırımcıların
gelişmekte olan ekonomilerin sermaye piyasalarındaki yüksek kar beklentisi,
gelecekteki fiyatları öngörebilmesine ilişkin merakı artırmıştır. Bu çalışmanın
amacı G-20 ülkelerindeki 20 borsanın zayıf formda etkinliğini test etmektir. Bu
amaç doğrultusunda rassal yürüyüş modeli yardımıyla G-20 ülkeleri borsalarının
01.01.2002-31.12.2018 dönemine ait günlük endeks değerlerine varyans analizi ve
ADF, PP ve KPSS testlerini kapsayan birim kök testleri uygulanmıştır.
Çalışmanın sonucunda varyans oran testine göre NASDAQ (ABD) ve SESN (Hindistan)
%1, TASI (Suudi Arabistan) %5 ve SSEC
(Çin) %10 düzeyinde rassal yürüyüş sergilemedikleri ve zayıf formda etkin
olmadıkları sonucuna ulaşılmıştır. Çalışma kapsamındaki diğer borsalar zayıf
formda etkin bulunmuştur. Ayrıca gerçekleştirilen birim kök testi sonuçlarına
göre analiz döneminde 18’er borsa zayıf formda etkin bulunmuştur.
Etkin Piyasa Hipotezi Zayıf Formda Etkinlik G-20 Üyesi Ülke Borsaları Birim Kök Testleri Varyans Oran Testi
In developed and emerging economies, capital markets
play a major role in tranforming savings into investment. The high profit
expectation of the investors in the capital markets of the emerging economies increase
the curiosity about predicting future prices. The aim of this study is to test weak-form
efficiency of 20 stock markets in G-20 members countries. For this purpose, with
the help of random walk model, daily index values of the stock markets of G-20
members countries for the period of 01.01.2001-12.31.2018 are applied by
analysis of variance and unit root tests including ADF, PP and KPSS tests. As a
result of study according to variance ratio test, it is concluded that NASDAQ
(USA), SESN (India), TASI (Saudi Arabia) and SSEN (China) do not show a random
walk and are not effective at the weak-form in the degrees of 1%, 5%, and 10%,
respectively. Other stock markets in the study are found in weak-form efficient.
In addition, according to the unit root test results, 18 stock markets are
found in weak-form efficient during the analysis period.
Effective Market Hypothesis Weak-Form Efficiency G-20 Member Country Stock Markets Unit Root Tests Variance Ratio Test
Primary Language | Turkish |
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Subjects | Business Administration |
Journal Section | MAIN SECTION |
Authors | |
Publication Date | September 30, 2019 |
Submission Date | February 22, 2019 |
Published in Issue | Year 2019 Volume: 21 Issue: 3 |
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