Study of the reaction and unusual behaviour of the stock market based on financial models and quantitative testing

In this article, we will present the fundamentals, empirical evidence and alternative models of behavioural finance that seek to identify reactions from markets potentially influenced by investor psychology. A methodology will be implemented for the quantitative evaluation of abnormal price reactions to investigate the feasibility of counter strategies andfor the moment in the specific case of assets of the Indian capital market. The results suggest, when adjustments by the level ofrisk are not considered, the existence of the influence of behavioural aspects in the market. This influence is reflected in the superior profitability of the strategies of the moment in horizons of thirteen to fifteen weeks after the investments, at the level of significance of 5%.