What is asset under management? Asset under management (AUM) is a financial term that refers to the total value of assets that a financial institution, such as a bank, investment company, or hedge fund, manages on behalf of its clients. These assets may include various types of investments, such as stocks, bonds, mutual funds, real estate, and more. AUM is an important metric for financial institutions, as it provides insight into the size and growth of their business, as well as their ability to generate revenue. The AUM figure can also be used to compare different financial institutions and investment strategies, as well as to track market trends over time.