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Characteristics of a Market Leader. A market leader is typically the company holding the largest market share in a particular industry or segment of an industry. Market leaders are often recognizable by the ubiquitous presence of their brand as well as their ongoing marketing efforts.
Also known as market cap, market capitalization is the total market value of a company's outstanding shares of stock. For example, you may have heard Apple referred to as the most valuable company in the world. That's because Apple currently has the highest market cap of any publicly traded company.