Value-at Risk is a highly accepted risk measurement tool by the finance industry.  The main objective of portfolio management is optimization of asset allocation according to expected returns and risk.  Portfolio Value-at-Risk is a widely used universal risk measure which helps to manage market risk.  Every portfolio can be classified by positions based on a certain number of risk factors.  As we can estimate Value-at Risk for single financial instruments, we can integrate all possible losses to express Portfolio Value-at-Risk. The purpose of this study is to describe dynamic strategy using Value-at-Risk calculations and to estimate the advantages and disadvantages of using Value-at-Risk in portfolio management.