Asset management firms are characterized by having quite high margins, although working in a highly competitive industry. However, the nature of their businesses makes it difficult to define both debt and reinvestment, making the estimation of cash flows much more difficult. It is reasonable to assume that Free Cash Flows to Equity-holders (FCFE) are proxied by net earnings because of a negligible level of investments, depreciation, and net working capital. For Asset Management firms, dividends are often the only tangible cash flow that we can observe or estimate. The common methods used to value asset management firms are the discounted cash flow, the multiples, and the Dividend Discount Model, with some adaptions. Despite their simplicity, rules of thumbs are often characterized by the inaccuracy of the final value.

https://www.researchgate.net/publication/340547455_THE_VALUATION_OF_ASSET_MANAGEMENT_COMPANIES