Indices are key indicators used to monitor and analyze the constant changes in the prices of selected securities in financial markets. They represent aggregate measures that reflect the overall price movements on the stock exchange, whether concerning the entire market or specific trading segments. Moreover, indices are not just mathematical indicators; they also reflect the broader context in which the market develops. The prices of the securities that make up an index can be influenced by various factors, including the national and international economic environment, political events, social changes, and other significant occurrences. Indices can also be considered one of the fundamental benchmarks of the financial market, which constitutes an essential part of the financial system. This system represents a complex network that integrates all economic entities through the flow of funds, savings, and investments. In this sense, indices provide insights into the current state of a particular economy, assisting analysts and decision-makers in better understanding market dynamics and making informed investment decisions. The paper analyzes the trends of selected stock indices from the American (Dow Jones Industrial Average, S&P 500), European (FTSE 100, DAX), and Asian capital markets (NIKKEI 225, Hang Seng) and compares them with the CROBEX index, illustrating the movement of local and regional markets and reflecting economic trends over the observed period of five years (from November 2019 to September 2024).