Uluslararası Ticaret ve Finans Bölümü Koleksiyonu

Permanent URI for this collectionhttps://hdl.handle.net/20.500.12469/67

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Citation - WoS: 8
Citation - Scopus: 11
Does mood affect institutional herding?
(Elsevier, 2020) Gavriilidis, Konstantinos; Kallinterakis, Vasileios; Öztürkkal, Belma
Drawing on a unique data set of daily portfolio holdings for Turkish mutual funds we investigate the relationship between mood and institutional herding on the premises of various established mood proxies (weekend effect; holiday effect; Ramadan; sunshine). Results indicate that fund managers in Turkey herd significantly, with their herding growing in magnitude as the number of active funds per stock rises and appearing stronger on the buy-than the sell-side. Although the relationship of mood with institutional herding occasionally assumes the correct sign as per theoretical expectations, institutional herding is found to be insignificantly different across various mood states, thus denoting that mood does not impact the propensity of fund managers to herd. (C) 2020 Elsevier B.V. All rights reserved.
Citation - WoS: 1
A Survey Analysis on the Investment Attitudes of Individual Investors
(Bilgesel Yayincilik San & Tic Ltd, 2013) Öztürkkal, Belma
This study aims to analyze determinants of trading behavior of individual investors where a survey of 55 questions on 85 people is used. The survey is composed of four parts: demographic properties perceived emotions investment preferences portfolio diversification. The findings show that investors are subject to home bias and the surveyed investors prefer to invest in local equity market. The findings show that older investors have less investment confidence and more diversification where number of different stocks and HHI (Hezfindahl-Hirshman Index) are used as two diversification measures in the analysis. The OLS regression and logit response results prove that male investors trade more and when the investor's equity portion of the total portfolios increases the number of trades also increases. The self-reported investment confidence level and greed have positive effect on diversification. Hence diversification level increases with the investor's equity portion of their total portfolios. The findings suggest that male investors on the average are more confident than females in their investment decisions and males who are more confident have better portfolio diversification choices.
The Relationship Between Firm Size and Export Sales: Sector or Size What Matters?
(Physica-Verlag, 2017) Berk, Niyazi; Öztürkkal, Belma
This paper examines the performance of export focused companies listed on the Borsa Istanbul trading in the emerging market of Turkey. Using the panel data of stock market prices (1995–2011) we study the performance of companies in different sectors and their return performance in the volatile exchange rate environment and devaluation periods of 1996 1997 1998 1999 2001 and 2008. The paper investigates sales market capitalization or asset performances’ statistical significance level with regard to these companies’ export level. We review the performance of these operational measures in an environment of changing foreign exchange rates. Regression analysis is used to measure the effects of currency devaluation on the companies analyzed. Finally the study analyzes the export sales of companies by sector following a period of sharp devaluation. © Springer International Publishing AG 2017.
Citation - WoS: 20
Citation - Scopus: 17
Efficiency Analysis of Black Sea Container Seaports: Application of an Integrated Mcdm Approach
(Routledge, 2020) Ömer Faruk, Görçün
The current paper carries out an examination about the selection of the proper container seaport, which in the Black sea region. This paper focuses on a research question. Is it possible to apply multi-criteria decision-making methods that can be applied more easily than the DEA technique for decision-makers? In order to determine the best performance analysis technique that can give successful results, two-hybrid multi-criteria decision-making models were selected and operational performances of the container ports in the Black Sea region were analyzed with the help of these integrated approaches. While the first MCDM model consists of the entropy and OCRA technique, the second hybrid model consists of the Entropy and EATWIOS method. The main aim of this paper is to discuss whether these proposed hybrid models can be implemented to make an effective performance analysis for the maritime industry. The second aim of this paper is to evaluate the Black sea container seaports with the help of this suggested model. The study reveals that the proposed MCDM models can be implemented for container port selection successfully and easily and both of them have given very closer results to each other in aspects of the evaluation of the criteria and options.
Citation - WoS: 2
Citation - Scopus: 2
Informed Trading, Order Flow Shocks and the Cross Section of Expected Returns in Borsa Istanbul
(Routledge Journals, 2020) Tiniç, Murat; Salih, Aslihan
This paper examines the relationship between information asymmetry and stock returns in Borsa Istanbul. For all stocks that are traded in Borsa Istanbul between March 2005 and April 2017, we estimate the probability of informed trading (PIN) to proxy for information asymmetry.? Firm-level cross-sectional regressions indicate a statistically insignificant relationship between PIN estimates and future returns. Moreover, univariate and multivariate portfolio analyses assert that investors that hold stocks that have high information asymmetry do not obtain significant future returns. Consequently, our results suggest that information asymmetry proxied by PIN is a firm-specific risk and can be eliminated with portfolio diversification. Findings are robust to different factorizations in estimating PIN and free of any bias due to trade classification algorithms, boundary solutions, floating-point exceptions and symmetric?order flow shocks.
Citation - WoS: 1
Citation - Scopus: 2
The Maximum Surplus in a Finite-Time Interval for a Discrete-Time Risk Model With Exchangeable Dependent Claim Occurrences
(John Wiley and Sons Ltd, 2019) Gebizlioğlu, Ömer Lütfi; Eryilmaz, Serkan
This paper investigates a discrete-time risk model that involves exchangeable dependent loss generating claim occurrences and compound binomially distributed aggregate loss amounts. First a general framework is presented to derive the distribution of a surplus sequence using the model. This framework is then applied to obtain the distribution of any function of a surplus sequence in a finite-time interval. Specifically the distribution of the maximum surplus is obtained under nonruin conditions. Based on this distribution the computation of the minimum surplus distribution is given. Asset and risk management–oriented implications are discussed for the obtained distributions based on numerical evaluations. In addition comparisons are made involving the corresponding results of the classical discrete-time compound binomial risk model for which claim occurrences are independent and identically distributed. © 2018 John Wiley & Sons Ltd.
Citation - WoS: 14
Measuring Bank Branch Performance Using Data Envelopment Analysis (dea): the Case of Turkish Bank Branches
(Academic Journals, 2011) Eken, Mehmet Hasan; Kale, Süleyman
The aim of this study is to develop a performance model for measuring the relative efficiency and potential improvement capabilities of bank branches by identifying their strengths and weaknesses. Another purpose is to investigate the production and profitability aspects of branches. Under both production and profitability approaches efficiency characteristics of branches which are grouped according to different sizes and regions have similar tendencies. In both analyses it is apparent that branch size and scale efficiency are related to each other. As branch size increases scale efficiency increases too and after the most productive scale size however as size increases efficiency decreases. Too small and too large branches need special attention. Putting production and profit efficiency scores on two scales reveals the performing characteristics of branches. Each region needs different handling. Branches with low production-low profit efficiency should be evolved towards high production-high profit efficiency region.
Citation - WoS: 78
Citation - Scopus: 84
Economic Policy Uncertainty and Bank Credit Growth: Evidence From European Banks
(Elsevier B.V., 2020) Danışman, Gamze Öztürk; Ersan, Oğuz; Demir, Ender
Using a sample of 2977 private and listed banks in the EU-5 countries (the United Kingdom, Germany, Spain, Italy, France) for the years 2009–2018, this paper explores the impact of Economic Policy Uncertainty (EPU) on credit growth. Using panel data fixed effects methodology and controlling for endogeneity using two-step difference GMM estimators, our findings indicate that uncertainty in economic policies hampers the credit growth of European banks. Our bank type-based analyses indicate that the effect is mainly valid for cooperative banks. Additional analyses imply that the negative impact of EPU on credit growth is more pronounced in civil law countries, increases with debt maturity, and weakens for banks with a larger number of employees and branches. Furthermore, the unfavorable effects are stronger in well-capitalized banks, banks with foreign subsidiaries, and banks with a higher share of wholesale funding. We also provide several policy implications for different economic actors.
Citation - WoS: 23
Citation - Scopus: 28
A Behavioral Analysis of Investor Diversification
(Routledge Journals Taylor & Francis Ltd, 2014) Fuertes, Ana-Maria; Muradoğlu, Gülnur; Öztürkkal, Belma
This paper studies the link between individual investors' portfolio diversification levels and various personal traits that proxy informational advantages and overconfidence. The analysis is based on objective data from the largest Turkish brokerage house tracking 59951 individual investors' accounts with a total of 3248654 million transactions over the period 2008-2010. Wealthier highly educated older investors working in the finance sector and those trading relatively often show higher diversification levels possibly because they are better equipped to obtain and process information. Finance professionals married investors and those placing high-volume orders through investment centers show poorer diversification possibly as a reflection of overconfidence. Our analysis reveals important nonlinear effects implying that the marginal impact of overconfidence on diversification is not uniform across investors but varies according to the investor's information gathering and processing abilities.
Citation - WoS: 4
The Government-Sponsored Enterprises
(John Wiley & Sons Ltd, 2011) Acharya, Viral V.; Öncü, T. Sabri; Richardson, Matthew; Van Nieuwerburgh, Stijn; White, Lawrence J.
[Abstract Not Available]
Citation - Scopus: 1
International Financial Crises and the Political Economy of Financial Reforms in Turkey: 1994-2009
(2009) Şakar, Birgül
This study1 holds for the formation of international financial crisis and political factors for economic crisis in Turkey are evaluated in chronological order. The international arena and relevant studies conducted in Turkey work in the literature are assessed. The main purpose of the study is to hold the linkage between the crises and political stability in Turkey in details and to examine the position of Turkey in this regard. The introduction part follows the literature survey on the models explaining causes and results of the crises the second part of the study. In the third part the formations of the world financial crises are studied. The fourth part financial crisis in Turkey in 1994 2000 2001 and 2008 are reviewed and their political reasons are analyzed. In the last part of the study the results and recommendations are held. Political administrations have laid the grounds for an economic crisis in Turkey. In this study the emergence of an economic crisis in Turkey and the developments after the crisis are chronologically examined and an explanation is offered as to the cause and effect relationship between the political administration and economic equilibrium in the country. Economic crises can be characterized as follows: high prices of consumables high interest rates current account deficits budget deficits structural defects in government finance rising inflation and fixed currency applications rising government debt declining savings rates and increased dependency on foreign capital stock. Entering into the conditions of crisis during a time when the exchange value of the country's national currency was rising speculative finance movements and shrinking of foreign currency reserves happened due to expectations for devaluation and because of foreign investors' resistance to financing national debt and a financial risk occurs. During the February 2001 crisis and immediately following devaluation and reduction of value occurred in Turkey's stock market. While changing over to the system of floating exchange rates in the midst of this crisis the effects of the crisis on the real economy are discussed in this study. Administered politics include financial reforms such as the rearrangement of banking systems. These reforms followed with the provision of foreign financial support. There have been winners and losers in the imbalance of income distribution which has recently become more evident in Turkey's fragile economy.
A Tournament Analysis of Mutual Funds in Turkey
(Bilgesel Yayincilik San & Tic Ltd, 2012) Öztürkkal, Belma; Erdem, Orhan
This is an analysis of the mutual funds in Turkey with respect to their risk-altering behavior Using the monthly returns and volatilities of 133 funds from 2002 to 2007 we divide each year in two parts and check whether or not the funds' performance in the first part affects the behavior of mutual fund companies in the second part in terms of risk. We find sufficient evidence that the funds which have lower/higher performance in the first part of the year have higher/lower risk appetite for the second half of the year: The results have stronger significance if the year is divided from June or July. The results from the Turkish mutual funds market are generally in line with previous literature from developed countries.
Citation - WoS: 3
Citation - Scopus: 3
Liberalization Post-Crisis Restructuring and Internationalization in Turkish Banking
(Routledge Journals Taylor & Francis Ltd, 2015) Yıldırım, Canan
This study provides a historical review of the transformation of the Turkish banking sector since the initiation of the financial liberalization program in 1980. It demonstrates the roles of macroeconomic institutional and firm-level factors in the evolution of market and ownership structures as well as the performance of the sector. It focuses on the penetration of foreign banks in the Turkish market and the more recently observed entries of Turkish banks into neighboring countries. It contributes to the literature by illustrating how the domestic macroeconomic and institutional environment together with international banking circumstances affect the processes and outcomes of internationalization in emerging banking markets.
Citation - WoS: 1
Citation - Scopus: 1
Measurement of Bivariate Risks by the North-South Quantile Points Approach
(Elsevier Science, 2014) Kara, Emel Kızılok; Gebizlioğlu, Ömer Lütfi
This paper attempts to determine the Value at Risk (VaR) and Conditional Value at Risk (CVaR) measures for the sum of bivariate risks under dependence. The computation of these risk measures is performed by the north-south quantile points of bivariate distributions. The Farlie-Gumbel-Morgenstern (FGM) copula model is chosen to express dependence of bivariate risks. The behaviors of VaR and CVaR are examined by varying dependence parameter values of the copula model and probability levels of the risk measures. The findings are interpreted from the view point of portfolio risk management. (C) 2013 Elsevier B.V. All rights reserved.
Citation - WoS: 2
Citation - Scopus: 3
Profit Sharing Between Managers and Investors: an Experimental Investigation
(Elsevier Science Bv, 2015) Öztürkkal, Belma
This study analyzes the effect of interest and power structures and conflict of interest among managers and investors and tests the effect of different payout mechanisms on willingness to pay. In this study 74 student subjects are involved in a setting where the manager is determining his own compensation. A series of experiments that vary managers' ability to determine their own compensation and investors' ability to punish inappropriate behavior are reported. The experiments involve pairs of subjects consisting of an investor and a manager with asymmetric decision making powers. When managers compensate themselves inappropriately investors' recourse is to shun the company's shares-a model that arguably corresponds more closely to reality than the accepted efficient market traditional paradigm. The experiment shows that managers share profits even when investors cannot withhold investment and investors fairly compensate managers as well. This pattern explains both the ability of capital markets to function despite the presence of inherent moral hazard and occasional managerial misbehavior. Copyright (C) 2015 Borsa Istanbul Anonim Sirketi. Production and hosting by Elsevier B.V.
Is U.s. Labor Market Flexibility a Prescription To Curve Turkey's High Unemployment?
(2011) Bilgin, Mehmet Hüseyin
This paper compares the U.S. and Turkish labor markets in terms of flexibility and draws some results for Turkey. In paper the U.S. is considered a flexible model and Turkey a rigid model. Since 2001 unemployment is one of the most serious problems in Turkey. Despite rapid economic growth in 2000s the job creation capacity of the economy has not improved and high unemployment still remains a worrisome problem. The paper also discusses the reasons for different unemployment rates in Europe and in the U.S. It focuses on the pre-recession period however and does not discuss the results of the global recession.
Citation - WoS: 6
Citation - Scopus: 6
On Concomitants of Upper Record Statistics and Survival Analysis for a Pseudo-Gompertz Distribution
(Elsevier Science, 2014) Yorubulut, Serap; Gebizlioğlu, Ömer Lütfi
This paper presents upper record statistics and their concomitants for a bivariate pseudo-Gompertz distribution about paired lifetime variables. Survival and hazard functions are derived for the distribution. The survival and hazard functions are displayed for some selected values of the parameters of concern. Interpretations are given for the potential reliability and actuarial applications of the obtained results. (C) 2013 Elsevier B.V. All rights reserved.
Citation - WoS: 11
Citation - Scopus: 11
Bivariate Pseudo-Gompertz Distribution and Concomitants of Its Order Statistics
(Elsevier Science Bv, 2013) Yorubulut, Serap; Gebizlioğlu, Ömer Lütfi
This paper presents a new bivariate Pseudo-Gompertz distribution that sprouts from the classical Gompertz distribution and possesses the features of pseudo-distribution functions. In addition to some standard properties of the proposed distribution distributions of order statistics and their concomitants for samples drawn from the new distribution are obtained. The survival and hazard functions of the concomitants are shown and their values are tabled. Interpretations of the results are given in connection with risk events and risk management. (C) 2013 Elsevier B.V. All rights reserved.
Citation - WoS: 10
Citation - Scopus: 9
Efficiency in Turkish Banking: Post-Restructuring Evidence
(Routledge Journals Taylor & Francis Ltd, 2017) Davutyan, Nurhan; Yıldırım, Canan
Turkish banking sector went through a significant restructuring process in the aftermath of the country's financial crisis of 2000-2001. In this paper we analyze the evolution of banking performance using a novel approach due to Ray [(2007). Shadow Profit Maximization and a Measure of Overall Inefficiency. Journal of Productivity Analysis 27 231-236]. We derive shadow unrealized profit scores' as well as shadow input-output prices' for each year and bank in the sector from 2002 to 2011. We argue these scores operationalize the Hicksian concept of monopolistic quiet life'. We provide some evidence the sector came closer to the zero profit condition' as well as displaying a closer approximation to the law of one price' over time. We show the variability of these shadow prices' essentially coincides with that of corresponding actual prices. We utilize shadow price information to show that business models and competitive choices of banks differ across ownership types with foreign banks competing on the broadest front compared to state-owned and privately owned Turkish banks.
Citation - WoS: 9
Citation - Scopus: 12
Art Investment: Hedging or Safe Haven Through Financial Crises
(Springer, 2020) Öztürkkal, Belma; Toğan-Eğrican, Aslı
We analyze long-term art auction sales data focusing on and around financial crisis periods with other investment returns to understand whether art can be considered a safe haven during volatile times or a hedging option in general by analyzing art auction data in a volatile emerging market. Our findings suggest Turkish art returns are either negatively correlated or at low correlation with other investments, including the equity market. We have the view that art can be considered a hedging mechanism on average to enhance returns and to decrease the risk of portfolios and improve diversification. However, we do not discard the safe-haven hypothesis, either. Although the auction data on the crisis period is limited, results of and around crisis periods show art returns are positively correlated with various volatility indices. In addition, the number of art transactions also increases after the crisis years, which may be a sign of liquidity requirement of some investors and an opportunity for buyers. The benefit is visible especially during years of contractions, which do not end with a very severe crisis, since the art auction market liquidity dries if the crisis is severe.

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