In order to observe the movements of the value of the index fund technical and fundamental analysis of financial instruments are used. Technical analysis attempts to foresee the future values of financial instruments based on historical data of the price and the volume of trading. Fundamental analysis takes into consideration macroeconomic factors, and observes companies and branches in which companies do business. Financial organization's investment funds or institutional investors are registered as companies, which collect financial means from the investors, and are then being invested in long term or short term investments. Investment funds can be closed or open. The open investment fund has a variable number of shares. Through the investment in fund is also increased the size of the fund and its number of shares, while in open financial investment fund there is no limit to the number of shares. In comparison to the open fund, the closed investment fund broadcasts and sells bonds in short periods. Crobex 10 is index share's opened investment fund with public offering (UCITS). The company that manages InterCapital Asset Management Ltd. controls the fund. In the composition of index are comprised 10 shares from the Crobex's index with the biggest free float of market capitalization and the volume of trading. Free float refers to the number of the shares that are available for trade, and market capitalization is the assessment of the value and the number of shares of the company. The center part of this paper is the analysis of movement of the value of the aforementioned fund. Index Crobex 10 by following the trends on the market had growing and falling trends. The fall of the gross national product, bad ratings from the credit institutions, the fall of the industrial production and the reduced number of trading with shares which comprise part of the fund, caused the falling trend of the value of index Crobex 10. During the time of positive macroeconomic influences and increased trading volume led to the rising trends.