Hennessy Advisors is an investment management firm that provides advisory services for a suite of mutual funds and exchange-traded funds spanning domestic equity, multi-asset, and sector-focused strategies. The company generates revenue primarily through investment advisory fees calculated as a percentage of assets under management, along with secondary shareholder service fees, while paying sub-advisory fees to external portfolio managers. Distribution occurs through fund supermarkets such as Schwab and Fidelity as well as direct channels, and the company pursues growth through both organic marketing efforts and strategic acquisitions of existing funds.