Ayşe Belma Öztürkkal

Öztürkkal, Ayşe Belma

Name Variants

Ozturkkal, Ayse Belma
Ayşe Belma Oztürkkal
Ö., Ayşe Belma
AYŞE BELMA ÖZTÜRKKAL
Ayşe Belma Öztürkkal
Ozturkkal,Ayse Belma
Oztürkkal, A.
Öztürkkal, AYŞE BELMA
Ӧztürkkal B.
Öztürkkal, Ayşe Belma
O.,Ayse Belma
Öztürkkal, A. B.
Ayşe Belma ÖZTÜRKKAL
Ayse Belma, Ozturkkal
Oztürkkal, Ayşe Belma
ÖZTÜRKKAL, AYŞE BELMA
O., Ayse Belma
Öztürkkal, A.
Öztürkkal,A.B.
A. Öztürkkal
Ozturkkal,A.B.
ÖZTÜRKKAL, Ayşe Belma
A. Oztürkkal
Öztürkkal B.
A. B. Öztürkkal
Ozturkkal, Belma
Öztürkkal, Belma

Job Title

Prof. Dr.

Email Address

belma.ozturkkal@khas.edu.tr

Main Affiliation

International Trade and Finance

Scholarly Output

19

Articles

16

Citation Count

0

Supervised Theses

2 Scholarly Output Search Results

Now showing 1 - 9 of 9

Citation - WoS: 4
Citation - Scopus: 3
Turkish Ipos in a Changing Regulatory and Economic Environment
(Elsevier, 2022) Tanyeri, Basak; Tırtıroğlu, Doğan; Ozturkkal, Belma; Öztürkkal, Ayşe Belma; Tirtiroglu, Dogan
The larger underpricing (15 percent) in the early years following the inauguration of Borsa Istanbul indicates the importance of investors, intermediaries, and firm insiders learning about the trading and pricing of firms in organized stock markets. The underpricing in recent years (from 2010 to 2020) averages 5 percent. Micro-level uncertainties about the firm as evidenced by the smaller underpricing in IPOs marketed using fixed offer prices, and the IPOs where underwriters signed on for firm commitment also prove important. Underpricing also proves smaller in larger IPO firms.& nbsp;Copyright (C)& nbsp;2021, Borsa Istanbul Anonim Sirketi. Production and hosting by Elsevier B.V.& nbsp;
Citation - WoS: 0
Citation - Scopus: 0
Explaining Mortgage Defaults Using Shap and Lasso
(Springer, 2024) Öztürkkal, Ayşe Belma; Wahlstrom, Ranik Raaen
We utilize machine learning methods to model the credit risk of mortgages in a significant emerging market. For this purpose, we investigate a multitude of variables that explain the characteristics of the loans, the demographics of the borrowers, and macroeconomic factors. We employ SHapley Additive exPlanations (SHAP) values in conjunction with five different tree-based machine learning methods, as well as the least absolute shrinkage and selection operator (LASSO) in conjunction with logistic regressions. Our findings, which are robust across two sampling schemes, reveal that while demographic variables are significant and important, loan-specific and macroeconomic variables are the most crucial in explaining mortgage defaults. As existing literature on mortgage default has primarily focused on advanced markets, we aim to bridge this gap by concentrating on emerging market data. We also share our code, which we hope will encourage others to utilize the methods we have applied.
Citation - WoS: 5
Citation - Scopus: 4
The Role of Environmental, Social, Governance (ESG) Practices and Ownership on Firm Performance in Emerging Markets
(Routledge Journals, Taylor & Francis Ltd, 2023) Erdoğan, Seda; Öztürkkal, Ayşe Belma
This paper investigates: (i) the effect of environmental, social, and governance (ESG) engagement and ownership attributes on firm performance and (ii) whether different ownership attributes (institutional, foreign, and state ownership) moderate the association between ESG engagement and firm performance. Employing an extensive sample from 22 emerging countries worldwide, we provide cross-country evidence that ESG engagement and its three pillars, i.e. environmental, social, and governance pillars, enhance firm performance, proxied with ROA and Tobin's Q. Moreover, institutional and foreign ownership positively impact firm performance. We present novel evidence that the positive impact of superior ESG engagement on firm performance is lower for higher institutional ownership companies than lower institutional ownership companies, but greater for higher foreign ownership companies than lower foreign ownership companies.
Effect of Family Controlled Firms on Cost of Equity Evidence of Turkish Listed Firms During 2008 Financial Crisis
(Kadir Has Üniversitesi, 2020) Qahtan, Abdulrahman; Öztürkkal, Ayşe Belma; Öztürkkal, Belma
Önceki çalışmalar, şirket yönetiminin mali bir krizin, özellikle de bu kritik zamanlarda ortaya birçok ekonomik olgu koyan yakın zamandaki ekonomik krizlerin önlenmesinde ya da etkilerinin azaltılmasında başarısız olduğuna inanmıştır. Bu olaylardan biri de vasıta problemi ve hissedarlar arası el koyma meseleleridir. Bir önceki araştırmalar kriz zamanlarında, hissedarların çoğunluğunun azınlıkta olan hissedarların malına el koyma dürtüsünün genellikle böyle bir dürtünün daha az olduğu aile şirketi olmayan şirketlerin aksine aile ya da bireyler tarafından yönetilen şirketlerde gözlemlendiğini iddia etmektedir. Bu araştırma, aile şirketleri ile 2008 yılındaki ekonomik kriz zamanında sonuçta büyük bir rolü olan öz sermaye maliyetinde belirgin olan vasıta maliyeti arasındaki ilişkiyi incelemektedir. Veriler Türk menkul kıymetler borsasındaki 331 şirketi kapsayarak Bist All Share (XUTUM) halka açık şirketlerinden toplanmıştır. Zaman aralığı, 2008'deki ekonomik krizden iki yıl önce ve iki yıl sonra olmak üzere 2006'dan 2010'a kadarki zaman olarak belirlenip farklı yapısından ötürü mali sektörü dışarıda bırakarak mali verileri ve son mülkiyeti bir araya getirmede ikinci veri metodunu kullanarak belirlenmiştir Sonuçlar, Türkiye'deki aile kontrolündeki ve aile kontrolündeki olmayan firmaların özkaynak maliyetinde önemli bir fark olmadığını göstermektedir.
Citation - WoS: 8
Citation - Scopus: 10
Does mood affect institutional herding?
(Elsevier, 2020) Gavriilidis, Konstantinos; Öztürkkal, Ayşe Belma; 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
Citation - Scopus: 1
Editorial Boards of Finance Journals: the Gender Gap and Social Networks
(Springer, 2024) Öztürkkal, Ayşe Belma; Tarantola, Claudia; Mare, Codruta; Paccagnini, Alessia; Ozturkkal, Belma; Pisoni, Galena; Skaftadotti, Hanna Kristin
We investigate gender disparities and network linkages among editors of Finance journals at the end of 2022. The role of journal editors in shaping academic disciplines is crucial, yet gender imbalances and the geographic concentration of editors remain poorly understood. Ethical considerations arise when examining the representation of women on editorial boards, as these imbalances can impact academic equity and the diversity of perspectives. We examine the gender composition of editorial boards and uncover the network structures among editors, seeking to shed light on the concentration of editorial power and its implications for diversity and inclusion. Our findings reveal that women account for an average of 20% of all editors, with notable variations across countries. Additionally, editorial affiliations are heavily concentrated in the United States and the United Kingdom. Through typological metrics, we identify highly connected editors with significant board memberships. While gender ratios remain consistent in substructures involving highly central editors or those serving on multiple boards, men consistently outnumber women.
Citation - WoS: 6
Citation - Scopus: 7
Art Investment: Hedging or Safe Haven Through Financial Crises
(Springer, 2020) Öztürkkal, Belma; Öztürkkal, Ayşe Belma; Toğan-Eğrican, Aslı; Togan 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.
Citation - WoS: 3
Citation - Scopus: 3
Regional Expansion of Emerging Market Banks: Evidence From the Middle East
(Routledge Journals, Taylor & Francis Ltd, 2022) Yildirim, Canan; Öztürkkal, Ayşe Belma; Ozturkkal, Belma
This study investigates challenges and opportunities that regionally expanding emerging market banks face. We focus on four leading Middle Eastern banks' internationalization trajectories and performances by employing a case study approach. We first examine the four banks' choices of target markets, entry sequencing, and entry modes over time and then analyze their entry strategies and post-entry financial performances in one of their key markets, Turkey. We show that the success of regional expansion strategies depends on parent bank characteristics such as scale and capital strength, strategic decisions regarding entry mode and timing, and host market structure and competitiveness.
Citation - WoS: 15
Citation - Scopus: 18
Contagion of Fear: Is the Impact of Covid-19 on Sovereign Risk Really Indiscriminate?
(Wiley, 2021) Cevik, Serhan; Öztürkkal, Ayşe Belma; Ozturkkal, Belma
This paper investigates the impact of infectious diseases on the evolution of sovereign credit default swap (CDS) spreads for a panel of 77 countries. Using annual data over 2004-2020, we find that infectious-disease outbreaks have no discernible effect on CDS spreads, after controlling for macroeconomic and institutional factors. However, a granular analysis using high-frequency data indicates that the COVID-19 pandemic has had a significant impact on CDS spreads. This adverse effect appears to be more pronounced in advanced economies, which may reflect the greater severity of the pandemic and depth of the economic crisis in these countries, at least during the initial stage of the outbreak, as well as underreporting in developing countries due to differences in testing availability and institutional capacity. While more stringent containment measures help lower sovereign CDS spreads, the fiscal burden of these efforts could undermine credit worthiness and eventually push the cost of borrowing higher.