12 Mar The 10 Largest U S. Companies by Market Cap in 2025

Each advisor has been vetted by SmartAsset and is held to a fiduciary standard to act in your best interests. The wider you go with the types of assets you invest in, the common wisdom says, the lower the risk. To learn more about investing in the S&P 500, check out our complete guide. While holding the S&P 500 has many advantages, namely that it brings balance to a portfolio, there are potential downsides as well. Narrowing things down martingale strategy forex even further demonstrates how the current bull market, which began in October 2022, has been beneficial to Interactive Brokers Group. On a trailing-two-year basis, it’s witnessed its customer count, customer equity on the platform, and customer margin loans all notably increase.

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Tesla’s Model 3 is the all-time bestselling plug-in electric car globally, and became the 1st electric car to sell 1 million units worldwide in June 2021. It won the award for ‘Best Company Compensation and Best Company Perks & Benefits’ in 2023. Advertising amounts to a whopping 97.8% of the company’s revenue, as per 2023 data. During market closures, you won’t be able to place trades through the best stock trading apps.

It was a pioneer in the development of the graphics processing unit (GPU), whose initial applications were primarily used for PC graphics and video games. The capabilities of the GPU are now being leveraged for use in AI and machine-learning applications, which accounts for the company’s recent growth spurt. It started as a personal computer company in the 1970s, but today, it makes iPhones, MacBooks, Apple Watches, iPads, and software.

Due to the enormous value of the companies in the Magnificent Seven, they hold significant weight—about a third—in the S&P 500 Index. Diversification is a pillar of sound investing, with portfolios including a range of stocks, bonds, and collections of investments such as exchange-traded funds (ETFs) and index funds. Although 2025 began a bit slower than last year, stock-split euphoria is beginning to bloom. With the first major forward stock split officially in the books, the biggest stock split of the year has been given the green light for two weeks from today. For instance, companies completing stock splits have consistently been a bright spot for the investing community.

• There are many options when it comes to alternative investments that can complement the S&P 500 in a portfolio.
• To learn more about investing in the S&P 500, check out our complete guide.
• Read on to see the 20 most valuable companies and where they stand as of May 2025.
• The court hasn’t decided on penalties yet, and Alphabet plans to appeal the ruling.
• Saudi Arabian Oil, commonly known as Aramco, is a Saudi Arabia-based integrated oil and gas company.

With over 130 million members, Costco is the largest warehouse club in the U.S. Costco has a unique business model where it generates a large portion of its profits from membership fees, allowing it to offer high-quality products with a low markup. Founded by a chemist and octafx broker reviews Union Army veteran of the same name, Eli Lilly is one of the world’s largest pharmaceutical companies.

Q. What does market cap indicate?

• For instance, if a company has 1 billion shares and all its shares are worth $100, the company’s market cap would be $100 billion.
• Get step-by-step guidance on investing in Apple stock and learn the ins and outs of this technology company.
• Most companies undertaking reverse splits are doing so from a position of operating weakness and attempting to save their stock from delisting on a major U.S. stock exchange.
• Microsoft is a global developer and licenser of software, devices, and services.
• In addition, it earns revenue through a growing array of hardware products, such as the Pixel phones, Fitbit, and the Google Nest home collection.
• Apple built its success off sales of its wildly popular products, including the iPhone, MacBook, and AirPods.

UnitedHealth also swiftly abandoned its financial guidance, mergers and acquisitions for dummies by bill snow blaming skyrocketing medical costs. In 2023, the company produced nearly 12,000 products for 528 clients worldwide. Its clients include Apple, Advanced Micro Devices, Broadcom, Intel, MediaTek, NVIDIA, NXP Semiconductors, OmniVision Technology, Qualcomm, and Renesas Electronics.

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It’s the largest contract chip manufacturer in the world, and demand for AI chips has led to increased sales for TSMC. The 2-for-1 split announced on April 23 and completed after the close of trading on May 21 was its ninth stock split in the last 37 years. Inclusive of dividends paid, Fastenal stock has a total return of more than 214,000% since its August 1987 initial public offering (IPO). Berkshire Hathaway today owns a large number of subsidiaries engaged in insurance, freight rail transportation, retailing, utility and energy generation and distribution, and other businesses.

Equities, credit products, and other diversifying assets, including foreign currencies. Founded in 1993, The Motley Fool is a financial services company dedicated to making the world smarter, happier, and richer. The Motley Fool reaches millions of people every month through our premium investing solutions, free guidance and market analysis on Fool.com, top-rated podcasts, and non-profit The Motley Fool Foundation. From a purely financial standpoint, market capitalization majorly indicates the size and success of a corporation.

London Stock Exchange

JPMorgan Chase & Co is the largest bank in the United States and the largest bank in the world by market capitalization. After-hours or post-market trading occurs after the stock market closes, from 4 p.m. Trading after-hours is considered to have increased risk and volatility due to wider spreads, limited liquidity, and increased competition from institutional investors.

No trading activity occurs when the stock market is closed, which can lower liquidity and increase volatility. The bond market’s holiday schedule is the same as the stock market’s, with the addition of Columbus Day and Veterans Day. Still, some experts argue that a handful of companies dominating the index makes it less reflective of the broader market’s performance and leaves people open to risk. To compare, let’s say you invest $1,000 in the S&P 500 and another $1,000 in a stock of your choice. When you’re investing in a single stock, you’re speculating that the company will perform well in the future. With the S&P 500, those losses would likely be balanced out by stocks in the index that are performing well.

Largest Companies By Market Cap (

Your portfolio’s value will increase significantly more if you hold Microsoft directly, as opposed to the exposure you get to the tech giant’s stock in the S&P 500 index. For this reason, investing in the S&P 500 can help balance the investment risk in your portfolio. Because the index includes companies from all sectors of the economy, risk is spread across a broad swath of industries, and you’re less vulnerable to the failure of any single stock. The final puzzle piece that helps explain why O’Reilly Automotive stock has been unstoppable is the company’s phenomenal share repurchase program.

Apple’s market value first hit $1 trillion in 2018, $2 trillion in 2020, and $3 trillion in 2022. It continues to grow through its subscription services (Apple Music, iCloud, Apple Pay) and investments in artificial intelligence (AI). Yet even with the biggest companies in the world, no investment is a sure thing. A diversified portfolio is still a must so that you’re not overly reliant on any single company or market sector.

Currently, it is the world’s third-largest company by revenue, and tops the chart of largest daily oil production of all oil-producing companies. Google has been referred to as the ‘most powerful company in the world’, thanks to its dominant position in the market data collection, and technological advantages in AI. That’s just one of Alphabet’s many widely used products, which also includes the email service ‘Gmail’, and the video site ‘YouTube’. The California-headquartered tech giant manufactures and markets the renowned iPhone, iPad and Macintosh computers, among other paragon consumer electronics products. It is the first and a longer-lasting company to have hit the $1 trillion market cap mark, and subsequently the $2 trillion and $3 trillion marks. Market capitalization doesn’t always tell investors the whole story, so here’s some additional information about the world’s biggest companies, as of February 2025.

Walmart may not have the largest market cap, but it is No. 1 in terms of revenue, and it’s the largest retailer in the world. With more than $600 billion in annual revenue, it earns more than most of the other companies on this list by a wide margin. Get step-by-step guidance on investing in Google (aka Alphabet) stock and learn the ins and outs of this behemoth tech company. Get step-by-step guidance on investing in Apple stock and learn the ins and outs of this technology company. Also known as Saudi Aramco, Aramco is the national oil company of the Kingdom of Saudi Arabia.

Nothing has captivated the attention of investors more over the last two years than the rise of artificial intelligence (AI). A list of all the stocks in the S&P 500 stock index, which is an index of the top 500 biggest companies listed on stock exchanges in the United States. There are a total of 500 companies but more than 500 stock tickers because several companies have more than one stock symbol.