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Autor	Dominik Krężołek, Grażyna Trzpiot
Tytuł	Statytstyczna weryfikacja modelu CAMP na przykładzie polskiego rynku kapitałowego
Title	The statistical verification of the CAPM in the polish capital market
Słowa kluczowe	CAPM, współczynnik beta, metoda najmniejszych kwadratów (MNK), równanie regresji, model korelacji krzyżowej
Key words	CAPM, beta coefficient, the Ordinary Least Square (OLS), the crosssectional regression model
Abstrakt	Poniższa praca prezentuje testy badające zasadność stosowania modelu wyceny aktywów kapitałowych CAPM w przypadku Giełdy Papierów Wartościowych w Warszawie SA. Wykorzystano dwa podejścia do testowania modelu: tradycyjne (zaproponowane przez Fama i MacBeth) oraz warunkowe (zaproponowane przez Pettengill, Sundaram oraz Matur). Podejście warunkowe zawiera dodatkowo test średnio dodatnich nadwyżek rynkowych oraz test symetryczności zależności ryzyko – dochód w okresach dodatnich i ujemnych nadwyżek rynkowych. Weryfikację modelu przeprowadzono dla dziennych logarytmicznych stóp zwrotu z akcji 92 spółek notowanych na GPW w okresie styczeń 2000 – grudzień 2005
Abstract	This paper presents some tests of validity of CAPM using data from the Warsaw Stock Exchange (WSE). Two approaches are presented: the traditional approach (proposed by Fama and MacBeth) and conditional approach (proposed by Pettengill, Sundaram and Mathur). The conditional approach contains additionally two tests: first one, that the excess market returns are, on average, positive and second one – that the risk – return relationship is symmetrical between periods of positive and negative excess market returns. To test the assumptions of CAPM the daily log-returns of 92 stocks listed in the WSE for the period January 2000 to December 2005 are used in this study
Cytowanie	Krężołek D., Trzpiot G. (2006) Statytstyczna weryfikacja modelu CAMP na przykładzie polskiego rynku kapitałowego.Zeszyty Naukowe SGGW - Ekonomika i Organizacja Gospodarki Żywnościowej, nr 60: 341-351
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Pełny tekst	EIOGZ_2006_n60_s341.pdf

Autor	Ewa Krawczyk
Tytuł	Zastosowanie metody kowariancji do określenia ryzyka na rynku nieruchomości komercyjnych
Title	Application of Covariance Method for Risk Assessing on the Commercial Real Estate Market
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Abstract	The Value at Risk model allows answering the base question asked by investor. How much money could be lost with given financial resources involved into given project, in fixed time and fixed risk preference The covariance method used to estimate VaR is static model, but analytic manner of computing allows, after essential analysis, to determine value at risk relatively clearly and quickly. Presented attempt of initiating tool to analyzing quantified risk of investment on real estate market, specialized for capital market, gives observations: a) in the situation of significant growth of investments on real estate market, financed mainly by banking institutions, there is necessity to work out risk models for this market segment, allowing to limit excessive losses caused by too optimistic prices and inappropriate calculations of the effectiveness of the investment, b) well known and used risk models for capital market are basics for connection the both market segments - capital and real - and empirical verification, including investing projects, c) VaR model can be used for determining quantified risk of an investing project, characterized by profitability ratio Net Present Value, but received results should be treated with limited confidence.
Cytowanie	Krawczyk E. (2005) Zastosowanie metody kowariancji do określenia ryzyka na rynku nieruchomości komercyjnych.Zeszyty Naukowe SGGW - Ekonomika i Organizacja Gospodarki Żywnościowej, nr 55: 127-148
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Pełny tekst	EIOGZ_2005_n55_s127.pdf

Autor	Ewa Drabik, Anna Górska
Tytuł	Ocena inwestycji na Warszawskiej Giełdzie Towarowej w okresie od stycznia 2002 roku do lipca 2004 roku
Title	The Evaluation of lnvestments at the Warsaw Commodity Exchange from January 2002 to July 2004
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Abstract	Nowadays the commodity exchange offers not only a wide range of operations such as trade in commodities but also future contracts and other types of financial transactions. While at the stock exchange one can encounter mainly shares, the commodity exchange epitomizes an impressive variety of negotiable units. Mutual funds and deposits, which are an alternative way of investing, also play a relevant role on the financial market. From economical point of view deposits are burdened with the smallest risk. According to the modem financial theory, the attitude towards a risk is considered as a very important aspect of the situation on the market. Not only behaviour of the investors but also political and economical events determine the situation on the market. The. behaviour of the investors is analysed by the cognitive psychology, which is associated with a new behavioural current in financial theory, which is called the behaviour finance. The aim of this paper is to check, if it is worth to invest at the commodity exchange. The analysis is carried out on the basis of the data from Warsaw Commodity Exchange in the span of3 years: 2002-2004.
Cytowanie	Drabik E., Górska A. (2004) Ocena inwestycji na Warszawskiej Giełdzie Towarowej w okresie od stycznia 2002 roku do lipca 2004 roku.Zeszyty Naukowe SGGW - Ekonomika i Organizacja Gospodarki Żywnościowej, nr 54: 89-99
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Pełny tekst	EIOGZ_2004_n54_s89.pdf

Autor	Grzegorz Koszela
Tytuł	Analiza portfela rynkowego
Title	The Analysis of Market Portfolio
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Abstract	Specialist bibliography offers an equation of the CML, but no formulae for market portfolio' s risk and return. It is connected with the omission of the equation of hyperbola, illustrating the interdependence between risk and return of a two-element portfolio. Co-ordinates of point C are the key for the selection of a portfolio with a predetermined risk of return from a ·CML. This paper fills in this gap. The paper also illustrates an issue of the short sale. Problems with the application of the above theory to multi-element portfolios consist in the fact that, starting from three-element portfolio, three is no clear equivalent of the equation determining the relation between return and risk. In a market portfolio the fundamental importance is attached to an adequate tangent to the hyperbola, its equation, and a point of tangency with the hyperbola. It means that it is impossible to apply the problem to the case of a portfolio assembled of a range of stocks (at least three) and one kind of bonds. Modifying the notion of a market portfolio by introducing a new notion of the so-called arbitrarily small risk portfolio, the author of this paper has achieved the possibility of a uniform characterization of portfolios assembled from any number of elements. A paper on the subject is prepared for publication.
Cytowanie	Koszela G. (2004) Analiza portfela rynkowego.Zeszyty Naukowe SGGW - Ekonomika i Organizacja Gospodarki Żywnościowej, nr 52: 119-129
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Pełny tekst	EIOGZ_2004_n52_s119.pdf