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Featured researches published by Ştefan Cristian Gherghina.


Scientific Annals of Economics and Business | 2014

EMPIRICAL RESEARCH TOWARDS THE FACTORS INFLUENCING CORPORATE FINANCIAL PERFORMANCE ON THE BUCHAREST STOCK EXCHANGE

Georgeta Vintilă; Elena Alexandra Nenu; Ştefan Cristian Gherghina

Abstract This study aims to investigate the potential factors of influence on corporate financial performance, by using the panel data regression analysis. The research was employed for a sample consisting of 40 companies listed on the Bucharest Stock Exchange, over the period 2010-2012. Corporate financial performance considered as the dependent variable was proxied through return on assets, return on equity, and Tobin’s Q ratio. There were selected the following factors that could influence corporate financial performance: capital structure, firm size, and corporate social responsibility involvement. Likewise, several control variables have been introduced: structure of the ownership and institutional investors. The results show a strong negative relationship between corporate financial performance and debt to equity ratio. Also, there has been revealed a positive influence of the company size on performance, although weak. Furthermore, the relationship between financial performance and social performance has been statistically validated, both using accounting and market ratios.


Procedia. Economics and finance | 2014

The Impact of Ownership Concentration on Firm Value. Empirical Study of the Bucharest Stock Exchange Listed Companies

Georgeta Vintilă; Ştefan Cristian Gherghina

Abstract The aim of this study consists in providing the first empirical evidence for the companies listed in Romania regarding the influence of ownership concentration on firm value. The empirical research was employed for a sample of companies listed on the Bucharest Stock Exchange (BSE), over the period 2007-2011, being estimated multivariate regression models for panel data, unbalanced, with fixed effects. The value of the companies was measured out by the instrumentality of Tobins Q ratio, however adjusted with the purpose of taking into account the industry membership diversity of the selected sample. We considered distinctly the ownership of the first, the second, and the third largest shareholder, as well the sum of holdings of the two largest shareholders and the sum of holdings of the three largest shareholders. Therefore, the results sustain a lack of influence on firm value exhibited by the first largest shareholder, while the second largest shareholder positively influences firm value. By considering the ownership of the third largest shareholder we identified a positive influence, but down to a level of holdings of 13.08 percent, thereupon the influence becomes negative. Thereby, beyond the identified threshold we could perceive the reduction of the third largest shareholder’ concern regarding the process of directors’ monitoring, thus following the own aims’ achievement. Further, from the ownership concentration perspective only the sum of holdings of the three largest shareholders positively influences firm value. However, there was not identified any statistically significant relationship between the sum of holdings of the two largest shareholders and firm value. Accordingly, the results are influenced by the context of an underdeveloped Romanian capital market within the first largest shareholder ownership discourages the occurrence of another investors holding significant stakes.


PLOS ONE | 2018

Exploring the link between environmental pollution and economic growth in EU-28 countries: Is there an environmental Kuznets curve?

Daniel Ştefan Armeanu; Georgeta Vintilă; Jean Vasile Andrei; Ştefan Cristian Gherghina; Mihaela Cristina Drăgoi; Cristian Teodor

This study examines the Environmental Kuznets Curve hypothesis (EKC), considering the primary energy consumption among other country-specific variables, for a panel of the EU-28 countries during the period 1990–2014. By estimating pooled OLS regressions with Driscoll-Kraay standard errors in order to account for cross-sectional dependence, the results confirm the EKC hypothesis in the case of emissions of sulfur oxides and emissions of non-methane volatile organic compounds. In addition to pooled estimations, the output of fixed-effects regressions with Driscoll-Kraay standard errors support the EKC hypothesis for greenhouse gas emissions, greenhouse gas emissions intensity of energy consumption, emissions of nitrogen oxides, emissions of non-methane volatile organic compounds and emissions of ammonia. Additionally, the empirical findings from panel vector error correction model reveal a short-run unidirectional causality from GDP per capita growth to greenhouse gas emissions, as well as a bidirectional causal link between primary energy consumption and greenhouse gas emissions. Furthermore, since there occurred no causal link between economic growth and primary energy consumption, the neo-classical view was confirmed, namely the neutrality hypothesis.


Emerging Markets Finance and Trade | 2015

The Effects of Corporate Board and CEO Characteristics on Firm Value: Empirical Evidence from Listed Companies on the Bucharest Stock Exchange

Georgeta Vintilă; Mihaela Onofrei; Ştefan Cristian Gherghina

ABSTRACT This article investigates the influence of characteristics of the corporate board and chief executive officer (CEO) on firm value, using a sample of companies listed on the Bucharest Stock Exchange from 2007 to 2011. We consider board independence, committees, size, and diversity as board characteristics, as well as CEO characteristics such as CEO age, tenure, dual roles of CEO and chairman, country of residence, and gender. We employ the Tobin’s Q ratio as a proxy for firm value. We find evidence that board size negatively influences firm value, whereas curvilinear relationships are found among board independence, diversity, and firm value. Also, CEO tenure positively influences firm value, whereas the other governance variables are not statistically significant.


Archive | 2016

Comply or Explain Approach and Firm Value on the Bucharest Stock Exchange

Ştefan Cristian Gherghina; Georgeta Vintilă

This paper aims at exploring the influence of compliance with the principles and recommendations stated within the Bucharest Stock Exchange (BSE) Corporate Governance Code on firm value, for a sample of companies listed in Romania, in 2011. Firm value was proxied both through accounting measures (such as return on assets, ROA and return on equity, ROE) and market measures (such as earnings per share, EPS), all being industry-adjusted. Based on the ‘Comply or Explain’ Statement issued by the BSE, there was conceived a questionnaire having the purpose to develop corporate governance ratings. Thus, we report the global corporate governance rating and a set of specific ratings as regards transparency and reporting, board and committees, shareholder rights, as well as corporate social and environmental responsibility. Therefore, by estimating several multivariate linear regression models, our results provide support for a positive and statistically significant relationship between the rating related to transparency and reporting and firm value, likewise between the rating related to corporate social and environmental responsibility and firm value, but only for industry-adjusted ROA. However, there was noticed the lack of any statistically significant relationship between corporate governance ratings and firm value, when industry-adjusted ROE and industry-adjusted EPS were employed.


Archive | 2016

Towards Valuation Multidimensional Business Failure Risk for the Companies Listed on the Bucharest Stock Exchange

Ştefan Cristian Gherghina; Georgeta Vintilă

Current research aims at developing a comprehensive financial instrument towards valuation business failure risk for a sample of 69 companies listed on the Bucharest Stock Exchange in 2013. There were considered several financial ratios such as liquidity ratios (e.g., current ratio, quick ratio, cash ratio), indebtedness ratios (e.g., general indebtedness ratio, financial stability ratio, global financial autonomy ratio, financial independence ratio, borrowing capacity ratio, long-term financial autonomy, leverage ratio, debt service coverage ratio), as well as solvency ratios (e.g., global solvency ratio and patrimonial solvency ratio). By taking into consideration the large number of selected ratios, we employed the principal component analysis as multidimensional analysis technique which ensures the non-redundant decomposition of the total variability out of the initial causal space through a lower number of components. Thereby, there were retained five principal components (being underlined liquidity, financial autonomy, financial independence, debt service coverage ratio, and solvency) which cumulate 90.5895 % of the initial information. Subsequently, based on the selected principal components we reported the aggregate business failure risk indicator.


Journal of Financial Studies and Research | 2016

Exploring the Link between Corporate Governance Characteristics and Effective Corporate Tax Rate: A Panel Data Approach on U.S. Listed Companies

Radu Alin Păunescu; Georgeta Vintilă; Ştefan Cristian Gherghina

We blend the corporate governance and corporate taxation literature streams to study the association between board, abreast CEO characteristics, and effective corporate tax rate. We have tried to sweep a broad brush over a large number of different econometric techniques that are relevant to the analysis of financial data. Using a sample of 50 companies, mainly from the technology area, listed at NASDAQ and component of Dow Jones index, over the period 20002013, the empirical approach employs panel least squares and quantile regressions, as well as robustness checks by means of estimated generalized least squares, generalized linear model, and generalized method of moments. We find that board independence and board size have a statistically significant negative impact on effective corporate tax rate. It is also important to note that board independence Granger cause corporate taxation. Regardless of its robustness, CEO ownership reveals a mixed influence: positive for quantiles between 0.3-0.5 and negative at the 0.9 quantile. We also find a mixed relationship between CEO tenure and corporate taxtion.


Journal of Economics Studies and Research | 2015

An Empirical Research on the Relationship Between Corporate Social Responsibility Ratings and U.S. Listed Companies' Value

Ştefan Cristian Gherghina; Georgeta Vintilă; Diana Dobrescu

This paper examines the relationship between corporate social responsibility (CSR) ratings and firm value, by using a sample of U.S. companies listed on the New York Stock Exchange and NASDAQ Stock Market, over 2008-2011. The Corporate Social Responsibility Index (CSRI) developed by Boston College Center for Corporate Citizenship and Reputation Institute was used as a proxy for corporate social responsibility. A certain company is perceived in three dimensions: citizenship (the community and the environment), governance (ethics and transparency), and workplace practices, that quantified through numerical variables are reflected into the CSRI ranking score. The Tobin’s Q ratio adjusted according to activity sector was employed in order to quantify firm value. After the estimation of panel data regression models, unbalanced, both without cross-sectional effects and with fixed effects, our results show that corporate social responsibility positively influences firm value. The empirical evidence is consistent with the instrumental stakeholder theory view, since the companies involved in corporate social responsibility undertakings use in a more effective way their resources in order to better satisfy stakeholders’ needs. CSR activities can add value to the firm if they are wisely managed and implemented, as well as sufficiently disclosed and reported.


Procedia. Economics and finance | 2014

The Influence of Financial Intermediaries’ Ownership on Firm Value. Empirical Evidence for the Companies Listed on the Bucharest Stock Exchange

Georgeta Vintilă; Ştefan Cristian Gherghina

Abstract The aim of this study consists in providing the first empirical evidence for the companies listed in Romania regarding the influence of financial intermediaries’ ownership on firm value. The empirical research was carried out for a sample of companies listed on the Bucharest Stock Exchange (BSE), over the period 2007-2011, being estimated multivariate regression models for panel data, unbalanced, with fixed effects. The companies’ value was measured through Tobins Q ratio, but adjusted in order to account for the industry membership diversity of the selected companies. We considered the ownership of the five Romanian Financial Investment Companies (SIF-s), the ownership of the Investment Funds and Financial Investment Service Companies (SSIF-s), as well the sum of shareholdings of all categories of financial intermediaries, including in the last the Property Fund (FP) ownership, but only for 2011, when the Romanian Government became minority shareholder. The results provide support for a positive influence of the five Romanian Financial Investment Companies on firm value, but up to an ownership threshold of 23.71 percent, whereupon the influence becomes negative. By considering the ownership of the Investment Funds and Financial Investment Service Companies, we identified a positive influence on firm value. Further, the results provide support for a positive influence of the sum of shareholdings of all categories of financial intermediaries on firm value, but up to an ownership threshold of 50.3 percent, whereupon the influence becomes negative. Therefore, down to the identified ownership thresholds we could validate the active monitoring hypothesis according to which there are sufficient incentives inside of financial intermediaries in order to oversee corporate performance


Energies | 2017

Does Renewable Energy Drive Sustainable Economic Growth? Multivariate Panel Data Evidence for EU-28 Countries

Daniel Ştefan Armeanu; Georgeta Vintilă; Ştefan Cristian Gherghina

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Georgeta Vintilă

Bucharest University of Economic Studies

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Mihaela Onofrei

Alexandru Ioan Cuza University

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Radu Alin Păunescu

Bucharest University of Economic Studies

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Elena Alexandra Nenu

Bucharest University of Economic Studies

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Mihai Nedelescu

Romanian-American University

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