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PL
Artykuł koncentruje się na ocenie umiejętności zarządzających portfelami inwestycyjnymi polskich funduszy akcyjnych. W badaniu wykorzystano stosunkowo dużą próbę badawczą, liczącą 87 podmiotów. Horyzont czasowy badania ustalono na okres 2000- -2015. Wyniki menedżerów oceniane były pod kątem umiejętności doboru walorów oraz wyczucia rynku. Otrzymane rezultaty wskazują na brak umiejętności w przewidywaniu tendencji rynkowych, mierzonych parametrami z modeli Treynora–Mazuya oraz Henrikssona–Mertona. Analiza z wykorzystaniem testu istotności dla wartości średniej, liczebności dodatnich i ujemnych wyników, jak również metod panelowych dla danych przestrzenno-czasowych nie dała jednoznacznych rezultatów co do istnienia umiejętności selekcji.
EN
This paper focuses on evaluating the skills of portfolio managers of Polish equity funds. A relatively large study sample, i.e. 87 entities, is used. The time horizon is the period 2000-2015. The returns are analyzed from the angle of stock selection and market timing ability. The obtained results show the lack of market timing skills measured with the parameters of Treynor–Mazuy and Henriksson–Merton models. The one sample t-test and frequency analysis of the positive and negative performance as well as the panel methods for the TSCS data are unequivocal in relation to the existence of stock selection skills.
EN
The author studies portfolio performance. Companies are chosen to portfolios due to their position in the ranking that is constructed on the base of the chosen financial ratios. There are three rankings constructed on different number of financial ratios. Each ranking is constructed on the base of synthetic measure of development. The TMAI ranking is constructed on the base of 48 financial ratios, the TMAI_gr1 ranking is constructed on the base of 14 financial ratios that can be correlated and the TMAI_gr2 ranking is constructed on the base of 8 uncorrelated financial ratios. The author uses data of companies listed on the Warsaw Stock Exchange between 2005 and 2011. The rankings and portfolios are built separately for each year. As a result, it can be stated that the Portfolio 3 in the TMAI_gr1 ranking is the best portfolio for investors who are maximizing the Sharpe ratio.
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