Analysis of Efficiency of Stock Analytics on The Example of the Russian Stock Market

Nowadays, expert opinion is one of the components of the structure of financial markets, which also directly affect its changes. By publishing their recommendations, analysts are also a driver in relation to the expectations and behavior of investors, who rely mainly on expert opinion in their portfolio. Purpose: assessment of the possibility of obtaining super-profits for the “ordinary” investor on changes in stock prices after the publication of changes in consensus recommendations. Relevance: insufficient study of this issue in the Russian scientific literature, the growing market of investment analytics, significance for the ordinary investor. Object of study: abnormal stock returns after the publication of a recommendation change. Subject of research: the process of occurrence and the magnitude of the abnormal rate of return after the publication of the recommendation change. Research method: as a research method in this work, the event analysis method is used. This method is widely used in the reviewed scientific literature in similar tasks, and is also widely used for other studies in order to assess the impact of a certain event on the market. In conclusion, testing is performed for the significance and stability of the results obtained to verify the correctness of the method used.