Ryzyko inwestycji w spółki giełdowe sektora energetycznego

In this paper a comparison of risk level changes of exchange company of power sector is presented. The analysis is based on data from Polish Stock Exchange (GPW) for following companies: Tauron Polska Energia SA (TPE), Polska Grupa Energetyczna SA (PGE), Polish Energy Partners SA (PEP), Zespół Elektrociepłowni Wrocławskich Kogeneracja SA (KGN) Enea SA (ENA), CEZ SA (CEZ). For these companies the portfolio with minimum Conditional Value-at-Risk (CVaR) is proposed.