Scopus İndeksli Yayınlar Koleksiyonu
Permanent URI for this collectionhttps://hdl.handle.net/20.500.12573/395
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Article Citation - WoS: 9Citation - Scopus: 12Not All Emerging Markets Are the Same: A Classification Approach With Correlation Based Networks(Elsevier Science inc, 2017-12) Sensoy, Ahmet; Ozturk, Keyser; Hacihasanoglu, Erk; Tabak, Benjamin M.Using dynamic conditional correlations and network theory, this study brings a novel interdisciplinary framework to define the integration and segmentation of emerging countries. The individual EMBI+ spreads of 13 emerging countries from January 2003 to December 2013 are used to compare their interaction structure before (phase 1) and after (phase 2) the global financial crisis. Accordingly, the unweighted average of dynamic conditional correlations between cross country bond returns significantly increases in phase 2. At first glance, the increased co-movement degree suggests an integration of the sample countries after the crisis. However, using correlation based stable networks, we show that this is not enough to make such a strong conclusion. In particular, we reveal that the increased average correlation is more likely to be caused by clusters of countries that exhibit high within-cluster co-movement but not between-cluster co-movement. Potential reasons for the post-crisis segmentation and important implications for international investors and policymakers are discussed. (C) 2016 Elsevier B.V. All rights reserved.Article Citation - WoS: 2Citation - Scopus: 4Investor Bias, Risk and Price Volatility(Emerald Group Publishing Ltd, 2022-11-29) Polat, Ali YavuzPurposeThis study proposes a framework based on salience theory and shows that focusing on one type of risk (idiosyncratic or systemic) can explain overpricing of securities ex ante, and resales at low prices during crisis periods.Design/methodology/approachThe author consider an overlapping generations (OLG) model where each generation lives for two periods and there is no population growth. Agents (investors) start their lives with an endowment W > 0 and have mean-variance utility. They invest their endowment when young and consume when old. Each period, the young investors optimally choose their portfolio from different risky assets acquired from the old generation, all assumed to be in fixed supply.FindingsThe author show that investor salience bias can explain excess volatility of asset prices and the resulting fire-sales in periods of financial turmoil. A change in salience - from one component (idiosyncratic) to the other (systemic) - will generate excess volatility. Interestingly, higher risk aversion generally exacerbates the excess volatility of prices. Moreover, the model predicts that if a big systemic shock hits the financial system, due to salience bias the price of systemic assets falls sharply. This relates to the observed fire-sales of assets during the global financial crisis.Practical implicationsThe proposed model and results suggest that there may be a scope for intervention in financial markets during turbulences. In terms of ex ante policies the study suggests that investors and regulator should use better risk assessment technologies.Originality/valueThis is the first study constructing a tractable model based on the argument that investor salience may exacerbate the excess volatility of prices during financial downturns. The author relate salience to two types of risk; idiosyncratic and systemic and assume that investors' risk perception is biased towards the type of risk that is currently salient based on prior beliefs or past data. The author show that the diversification fallacy of the precrisis period, where seemingly safe assets were overpriced, can be explained by agents overweighing idiosyncratic risk and ignoring systemic risk.Article Citation - WoS: 9Citation - Scopus: 25Do Market Differences Matter on Dividend Policy?(Elsevier, 2021-06) Tekin, Hasan; Polat, Ali YavuzWe investigate the dividend policies of firms in the United Kingdom to understand whether firms in different markets use dividends as a signaling or disciplining device. The sample consists of 1247 firms from the highly regulated Main Market (MAIN) and relatively unregulated Alternative Investment Market (AIM) for the period 2002-2017. We find that firms in AIM pay lower dividends than their MAIN counterparts. However, during turbulence, AIM firms decrease dividends lower than MAIN firms. In line with the signaling hypothesis, AIM firms with increased profitability are more likely to increase dividends. These results suggest that AIM firms depend more on the signaling feature of the dividends, whereas MAIN firms use dividends as a disciplining device to limit managerial discretion. Specifically, we find that AIM firms facing bigger agency problems pay lower dividends compared to other AIM firms, in line with the outcome view of agency theory. Copyright (C) 2020, Borsa Istanbul Anonim Sirketi. Production and hosting by Elsevier B.V.