The article analyzes the concept of investment, taking into account the realities of the digital transformation of the economy. Based on a comparative analysis of the existing legal definitions of investment in the Russian legislation and doctrine, their cohesive characteristic feature as the purpose of their implementation is highlighted. In addition, it is proved that investments are the objects of civil rights invested in the objects of entrepreneurial activity It is revealed that the proposed definition of investments made with the help of investment platforms is not correct and demands revision as it is not based on the existing approaches to the definition of such investments. The authors point out that the legal definition of investments in the Law on Investment Platforms does not indicate the objects where they are invested. Doubts are also raised about the possibility of making investments by converting them in utilitarian digital rights or by means of a loan. The author makes a conclusion that a unified concept of investment is needed, and that investment law should be brought to consistency within itself.