The securities market is the most important instrument for financing and developing the economy of any state, including Kazakhstan. The main problem is to attract investments for enterprises in all sectors of the economy, as well as to ensure that enterprises have access to cheaper equity than bank loans. Purpose to identify the main trends in the development of the domestic securities market, to assess the level of its profitability. The article emphasizes the role of the securities market as the most important mechanism for the redistribution of funds between sectors of the economy. The securities market, as an integral part of the financial market, is gaining especially growing importance in the economy of Kazakhstan, as well as in the economy of the entire world community. When writing the article, traditional methods (comparison, description, and measurement), general logical methods and research techniques (analysis, generalization, etc.) were used. The article discusses the main theoretical approaches to determining the essence of the analyzed concept, attempts are made to formulate the main problems in the securities market, presents the results of the analysis of data characterizing the current state of the stock market of Kazakhstan. In essence, the securities market is a macroeconomic regulator of the state, through which opportunities are created to attract foreign and domestic capital. Thus, the securities market as an effective tool for attracting capital contributes to solving socio-economic problems. The author notes that the main theories about the state of the stock market are characterized by a superficial approach, as evidenced by the fact that none of them considers the internal structure of the stock market, which is the main tool for determining the patterns of changes in the value of financial instruments. It should also be noted that the choice of theory depends entirely on the perception and opinion of the relevant analyst. Singling out one theory as the only and most acceptable one would be wrong.