The research “Investment planning in the context of volatile business cycles” describes stock market activity – related efficient decision making and portfolio structure optimisation methods, innovatively integrated into a single analytical framework, capable of providing applicable solutions for the topical economic challenges and capital flow generation issues. The newly developed forecasting and decision – making model, based on classic and time – proven methodologies, was created in order to simultaneously preserve and thrive on the existing expertise and acquired knowledge, while enhancing the existing paradigm capabilities with the main goal of creating a scientifically justified, risk – wise and reasonably easy to use equity management method, thus ensuring the appropriate financing of coherent and consistent economic development, based on sustainable long – term growth. The efficiency of the model had been quantitatively verified in terms of both empirical and applicable employability and the acquired results of the conducted experimental implementation were compared with the previously gained data form applying classic singular analytical approaches in the broader context of the proposed research hypothesis verification. The main research question had been provided with a scientifically rational answer, while solving the problem of making a choice over the preferred strategy of stock market behaviour, adapting to the existing investment environment and portfolio structure analysis and evaluation.