Kontrowersje wokół interpretacji wyników inwestycyjnych funduszy „hedge”
Controversy over the interpretation of investment performance of hedge funds

Summary/Abstract: One of the most crucial changes which have occurred within last several years is the fast increase of the new financial players. They have a very large and serious influence on the functioning of the financial markets exactly in the core of the financial system. Hedge funds were particularly important and attractive for the institutional and individual investors. First extract of the article is the point of the hedge funds connected with a data source. The following part contains some considerations about data bases of the hedge funds. The third part is the analysis of the errors of data bases, which have a crucial influence on the estimation of the investment result of the hedge funds

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