This paper explores how firms with different stakeholder structures choose their assets and liabilities and how they perform as economic entities. Our data from the Norwegian banking industry shows that ownerless firms are smaller, charge higher prices, and take on less risk than stockholder-owned firms, whereas partially stockholder-owned firms fall in between. Such behaviour is as expected when stakeholders use their control rights to make the firm behave in ways they prefer. More surprisingly, ownerless firms are not outperformed by firms fully or partially controlled by stockholders. This finding questions the critical role of owners posited by agency theory, but supports the idea that the disciplining effect of product market competition is a powerful substitute for ownership. The evidence also suggests that stockholders may benefit economically from internalizing welfare effects of their actions on other stakeholders, such as employees, customers, and the local community.