This paper endeavors to examine weak form efficiency in the Financial Times Stock Exchange 100 (FTSE 100) under the ongoing theory of efficiency, namely the Efficient Market Hypothesis (EMH). In particular, this paper aims to examine the presence of random walk in FTSE 100 during the period from 2001 January to 2009 November which could be the end of the peak of the global financial crisis. Unit root tests such as ADF and PP shows that the market is non-stationary and therefore, random walk hypothesis is accepted. According to GARCH (1, 1) outcomes, in all condition the market prices follow the random walk supporting the weak form market efficiency hypothesis. It can be concluded that in developed markets such as FTSE 100, the existence of weak form market efficiency is evident.
Abstract-Nowadays, it is crucial to be aware of the impacts of management of working capital indicators on firm performance. In order to figure out the existence of this relationship, there have been many research conducted. In this context, the main aim of this research is to determine the relationship between working capital management and firm performance of twenty-nine of thirty three companies listed on the Borsa Istanbul SME Industrial Index from 2011 to 2014. In this respect, pooled OLS test and cross sectional time series analysis technique is employed. We found negative relationship between Net Margin and, Short Term Debt Turnover Days and Cash Conversion Cycle. It can be interpreted that effective management of working capital, such as decrease in Short Term Debt Turnover Days, can positively affect firms' performance.Index Terms-Borsa Istanbul SME industrial index, working capital management, firm performance.
Etkiler modelinde sosyal medya kullanımının finansal performansa etkisinin istatistiksel açıdan anlamını yitirdiği görülmüştür. Elde edilen bulgular genel olarak değerlendirildiğinde, sosyal medya mecralarında Facebook kullanımın negatif etkisi söz konusuyken, Twitter platformu üzerindeki etkileşimin pozitif etkisi öne çıkmaktadır.
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