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Struktura czasowa zmienności kontraktów terminowych na VIX – modelowanie i własności prognostyczne

100%
Jabłecki J., Kokoszczyński R., Sakowski P., Ślepaczuk R., Wójcik P.
Zarządzanie i Finanse
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2013
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vol. 2
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issue 4
181-192
PL
Niniejsze opracowanie podejmuje próbę wykorzystania informacji zawartych w strukturze terminowej zmienności do prognozowania przyszłych wartości indeksu VIX. W badaniu wykorzystano dzienne notowania indeksu VIX oraz kontraktów terminowych na ten indeks. Wyniki wskazują z jednej strony na istotną statystycznie ujemną zależność między opóźnieniem nachylenia struktury zmienności a bieżącą wartością indeksu VIX. Z drugiej zaś strony wykorzystanie struktury terminowej kontraktów terminowych na indeks VIX nie przekłada się na istotnie niższe błędy prognoz przyszłych wartości indeksu VIX.
2
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The impact of global risk on the performance of socially responsible and conventional stock indices

88%
Śliwiński P., Łobza M.
Equilibrium. Quarterly Journal of Economics and Economic Policy
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2017
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vol. 12
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issue 4
657-674
EN
Research background: In the last decades social responsible investment has evolved into an important and influential investment class. What supports then the development of SRI? The neoclassical approach suggests that the attractiveness of investment should result from the risk-return relationship that is satisfying for the investor. However, the performance analysis of SRI vs. conventional investment, conducted in numerous research papers, often delivers contradictory conclusions. If financial factors could not explain the phenomenon of SRI, nonfinancial factors may have played a decisive role in the formation of modern SRI market. Purpose of the article: The purpose of this paper is to analyze financial investment performance of socially responsible vs. respective conventional indices in the periods of high, low and unidentified global risk. Therefore, a following research hypothesis was verified: SR indices perform financially better in high-risk periods than in low-risk periods. This hypothesis is justified by the assumption that, when selecting SRI, investors go by a longer investment horizon than they do when selecting other investments, not subject to such verification. Methods: Among SR indices, we chose three to compare them with their conventional counterparts: DJSI US vs. DJITR (USA), DJSI Korea vs. KOSPI (South Korea) and Respect Index vs. WIG20TR (Poland). The VIX index was used as the global measure of risk aversion. To measure the relative performance of SR and conventional indices in different risk periods, we applied risk-adjusted performance measures, including RSD, Sharpe and Treynor ratios, traditional and asymmetrical CAPM. Findings & Value added: The research shows that conventional and socially responsible indices do not differ statistically in terms of risk and return irrespective of global risk. Our research confirms that the rising, socially responsible, investment market cannot be analyzed only through the prism of simplified rational choices. Additionally, it should be analyzed in terms of moral philosophy and behavioral economics, including the psycho-social features of investors.
3
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Does the inclusion of exposure to volatility into diversified portfolio improve the investment results? Portfolio construction from the perspective of a Polish investor

75%
Latoszek M., Ślepaczuk R.
Economics and Business Review
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2020
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vol. 6(20)
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issue 1
46-81
EN
The main goal of this research is to analyse the investment benefits from an incorporation of the volatility exposure to the diversified portfolio from the perspective of a Polish investor. Volatility, treated as a new asset class, may improve the performance of the portfolio due to its negative correlation with most types of assets. This topic has been widely investigated for the United States and Europe whereas the Polish market appears to be not heavily researched and this study may fill this gap. The research covers the period from October 2010 to July 2018 and is performed on daily close prices. To construct the portfolios the analysis uses the mean-variance framework and the naïve diversification approach. The comparison of risk-adjusted returns between investments with and without volatility exposure enables an answer to the research question about an improvement of the results by the addition of a non-standard asset to the diversified portfolios. The VXX is considered as the proxy for volatility as it is the most popular ETN which follows the volatility index derivatives with the given maturity. To test the robustness of the results the portfolios are constructed with a broad range of different parameters and assumptions imposed on the optimization procedure.
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