摘要：In order to carry out such an analysis, it is necessary to previously redefi ne the utility function on the argument or variable most often used in the microeconomic literature, namely the private wealth, that is the individual wealth. Using the concept of hoped utility, within this article we try to express the individual preferences towards risk (preference, neutrality or aversion), to identify the allure of the utility functions that are specifi c for each category of risk and determine the risk premium that each investor is willing to assume when about risk, given his own profi le, when realizing a fi nancial investment of the insurance products type. The investor initial wealth is undoubtedly known, while in case of the fi nal wealth the lack of certitude of the future treasury fl ows may occur, such that the fi nal wealth will represent the random result of adding the treasury fl ows to the initial wealth.
关键词：aversion towards risk; utility; initial wealth; lottery; premium;risk.
