Biggest Stock Market Companies in 2025

The Top Stock Market Companies to Watch in 2025

By Matthew Frankel, CFP – Updated Aug 20, 2025 at 10:28 PM | Fact-checked by Frank Bass

Key Points

With a $4 trillion market cap, Nvidia leads as the largest Nasdaq company, pioneering GPUs.
Taiwan Semiconductor tops NYSE listings with a $1.19 trillion cap, benefiting from AI investments.
Cargill, a major private U.S. firm, diversifies products, from food to pharmaceuticals.

Among the three major U.S. stock exchanges -- the Nasdaq Stock Exchange, New York Stock Exchange (NYSE), and over-the-counter (OTC) markets -- there are more than 12,000 publicly traded stocks available for investors. However, many of these are rather tiny, up-and-coming businesses.

If you limit your search to companies with valuations of $250 million or more, the number comes to about 3,600 as of June 2025. And if we look at companies with market capitalizations (the value of all of a company's shares combined) of $1 billion or higher, there were about 2,500 to choose from.

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American flags flying on a Wall Street building. — Image source: Getty Images.

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Publicly Traded Company

A company that issues shares that are publicly traded, meaning the shares are available for anyone to buy and sell on the stock market.

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The bottom line on the top stock market companies

There are thousands of companies listed on the U.S. stock market's various exchanges. As of August 2025, there were about 3,450 different stocks listed on the Nasdaq (including cases where the same company has more than one class of stock), about 2,200 on the NYSE, and almost 6,500 on the OTC markets. The companies mentioned here, although the largest, make up only a tiny fraction of all publicly traded companies.

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About the Author

Matt Frankel, CFP, is a contributing Motley Fool stock market analyst and personal finance expert covering financial stocks, REITs, SPACs, and personal finance. Prior to The Motley Fool, Matt taught high school and college mathematics. He holds a bachelor’s degree in physics from the University of South Carolina, a master’s degree in mathematics from Nova Southeastern University, and a graduate certificate in financial planning from Florida State University. He won a SABEW award for coverage of the 2017 Tax Cuts and Jobs Act. He is also regularly interviewed by Cheddar, The National Desk, and other TV networks and publications for his financial, stock market, and investing expertise.

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