Assessment of the effectiveness of capital market and choosing the appropriate investment strategy

The principal objective of this work is to test the efficiency of the U.S. capital market and to specify the degree of this effectiveness and then to find out the optimal strategy to evaluate the money invested into selected companies. At first there is theory description - the basic classification of securities, explication of the notion of efficiency of capital market, the methods of test the efficiency, several statistic indicators of the capital market like return average, standard deviation or coefficients of the capital market. Following this theoretical base there is create an analyse of one of the most popular capital markets in American index S&P 500 and of its sectors and some securities. Historical dates of years 2003 - 2008 are analysed and on the basis of results there are propositions which strategy to choose. There wasn't directly confirmed effectiveness of U.S. capital market in this work. So there was a possibility to choose an investment strategy to get an above-average return. The results were very influenced by the crisis since 2007