THE RELATIONSHIP BETWEEN ECONOMIC POLICY UNCERTAINTY AND G7 STOCK MARKETS

Öz

The concept of uncertainty, which emerges in situations such as war, financial crises, and political elections, has a great influence on the decisions of economic units. An environment of uncertainty negatively affects investors' confidence in the economy. One of the areas where the negative effects of uncertainty can be observed is country stock markets. This study explores the relationship between the economic policy uncertainty index and stock exchange in G7 developed markets. For this purpose, the monthly period from 1997 to 2019 is examined with second-generation panel data methodologies to consider the possible cross-sectional dependence among observed markets. In estimating the long-term effect of the economic policy uncertainty on the G7 country stock market indices, the Common Correlated Effect (CCE) estimator, which considers the cross-sectional dependency observed between countries. The causality relationship between the economic policy uncertainty index and the G7 country stock market indexes is examined with the panel causality test, which considers the cross-section dependency and heterogeneity. The results show that economic policy uncertainty negatively affects the G7 stock market indices in the long term. On the other hand, the panel causality test results reveal that there is bidirectional causality between economic policy uncertainty and financial markets.

Anahtar Kelimeler

• Economic Policy Uncertainty
• G7 Stock Markets
• Panel Cointegration
• Panel Causality

EKONOMİ POLİTİKASI BELİRSİZLİĞİ İLE G7 ÜLKE BORSALARI İLİŞKİ BELİRSİZLİĞİ ÜLKE BORSALARI ARASINDAKİ İLİŞKİ

Öz

Savaş, finansal krizler ve siyasi seçimler gibi durumlarda ortaya çıkan belirsizlik kavramı, ekonomik birimlerin alacağı kararlar üzerinde oldukça etkili olmaktadır. Belirsizliğin olduğu bir ortam, yatırımcıların ekonomiye olan güvenini olumsuz etkilemektedir. Belirsizliğin yarattığı olumsuz etkilerin gözlemlenebildiği alanlardan birisi de ülke borsalarıdır. Bu çalışma, G7 gelişmiş ülke piyasalarında ekonomi politikası belirsizliği endeksi ile borsa arasındaki ilişkiyi araştırmaktadır. Bu amaçla, 1997'den 2019'a kadar olan aylık dönem, gözlemlenen piyasalar arasındaki olası yatay kesit bağımlılığını dikkate alan ikinci nesil panel veri metodolojileri ile incelenmiştir. Ekonomi politikası belirsizliğinin G7 ülke borsa endeksleri üzerindeki uzun dönem etkisinin tahmin edilmesinde, ülkeler arasında gözlemlenen yatay kesit bağımlılığını dikkate alan ortak ilişkili etkiler (CCE) tahmincisi kullanılmıştır. Ekonomi politikası belirsizliği endeksi ile G7 ülke borsa endeksleri arasındaki nedensellik ilişkisi ise yatay kesit bağımlılığını ve heterojeniteyi dikkate alan panel nedensellik testi ile incelenmiştir. Sonuçlar, ekonomi politikası belirsizliğinin G7 ülke borsa endekslerini uzun vadede olumsuz etkilediğini göstermektedir. Ayrıca, panel nedensellik test sonuçları, ekonomi politikası belirsizliği ile G7 ülke borsaları arasında çift yönlü nedensellik olduğunu ortaya koymuştur.

Anahtar Kelimeler

• Ekonomi Politikası Belirsizliği
• G7 Ülke Borsaları
• Panel Eşbütünleşme
• Panel Nedensellik

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