A business firm which controls more than half of another firm's equity is a?

A business firm which controls more than half of another firm's equity is known as a holding company. In other words, a holding company is a type of business organization that owns a controlling interest in one or more other companies. The holding company does not usually engage in day-to-day operations of the companies it controls, but rather holds their assets and manages their investments. The purpose of a holding company is typically to gain control over other companies, diversify investments, and potentially access tax benefits or other advantages.