EN
The paper aims at implementing the original Black-Litterman model and its slight modification to portfolio selection problem using data on sector indices from Polish stock market. The resulted portfolios' characteristics are dynamically compared with characteristics of classical Markowitz portfolio obtained from different estimation and verification sample lengths. The results clearly suggest that the portfolios that averaged shares from Black-Litterman and Markowitz procedure offered reasonable trade-off between returns and risk. Namely in most cases they exhibited the lowest realized risk whereas their returns were between the returns for BL and Markowitz portfolios.