Duygu Zirek

University of New Orleans | UNO · Department of Economics and Finance

In this article, we examine the effects of shared beliefs and the personal preferences of individual investors on their trading and investment decisions. We expect that the process of classifying stocks into Sharia-compliant (Islamic) and non-Sharia-compliant (conventional) has an effect on the investibility and acceptance of the stocks especially...

In this study, we analyze employee litigation and other work-related complaints to examine if the judicial process favors firms that engage in lobbying. We gather data for 27,794 employee lawsuits (after their initial court hearings) filed between 2000 and 2014 and test the relationship between employee allegations and firms' lobbying strategies. W...

We examine 1460 product recalls that were announced by U.S Official Agencies between January 1990 and December 2014. Consistent with previous research, we report statistically significant negative abnormal returns during the announcement dates. Moreover, our results suggest two main objectives. First, we find that the effect of product recalls vary...

The following dissertation contains two distinct empirical essays which contribute to the overall field of Financial Economics. Chapter 1 titles as “Corporate Lobbying, CEO Political Ideology and Firm Performance”. We investigate the influence of CEO political orientation on corporate lobbying efforts. Specifically, we study whether CEO political i...

In this paper, we investigate the influence of CEO political orientation on corporate lobbying efforts. Specifically, we study whether CEO political ideology, in terms of manager-level campaign donations, determines the choice and amount of firm lobbying involvement and the impact of lobbying on firm value. We find a generous engagement in lobbying...

This paper investigates the ability of prior returns, relative to aggregate market returns, to predict future returns on industry style portfolios. The results show that past return differential predicts one-month ahead returns negatively, even in the presence of a set of state variables. The predictability is also found to be robust to alternative...

In this paper, we investigate the impact of Islamic banking variables on economic growth in a panel setting for 14 member countries of the Organization of Islamic Countries during 1999-2011 period. We examine the short-run effects as well as long-run effects by employing the Panel VAR method. We find a positive and significant relationship between...

This paper examines the time-series predictability of aggregate stock returns in twenty emerging markets. In contrast to the aggregate-level findings in the United States, earnings yield forecasts the time series of aggregate stock returns in emerging markets. We consider aggregate earnings not as normalizing variables for stock price but as predic...