A holding company is a company that owns other companies but does not actively operate businesses or sell products itself. Holding companies' sole purpose is to own assets that generate income through shareholding in other companies. As the owner and CEO of a holding company, your main responsibilities are to ensure the companies your holding company invests in are earning profits, as this is your main source of income. Columbia Care LLC is provided as an example of a large holding company focused on healthcare, real estate, research and technology that makes investments in these sectors by negotiating deals that are mutually beneficial for both the holding company and businesses receiving investments.