Who is referred to as the owner of one or more shares of stock?

The term that refers to the owner of one or more shares of stock is "stockholder." A stockholder, also known as a shareholder, possesses ownership in a corporation through the shares they own. This ownership entitles them to a portion of the company's profits, usually distributed as dividends, and grants them voting rights in corporate decisions, depending on the class of shares held.

While the terms "investor" and "stakeholder" can be related to someone who has a financial interest in a company, they do not specifically denote ownership of shares. An investor may be someone who buys various types of assets including stocks, bonds, real estate, or other investments, while a stakeholder encompasses anyone with an interest in a company, including employees, customers, and suppliers, but not exclusively shareholders.

The term "member" can refer to individuals in specific types of organizations such as cooperatives or limited liability companies (LLCs), but it does not typically refer to ownership of stock in a corporation. Thus, the correct term to denote ownership of shares is stockholder.