The answer to what company has the highest networth depends on which measure you use. By market value, a handful of US technology companies lead. By the accounting measure of net worth, which is shareholders’ equity, the picture is different, and one famous investment company stands out.
What company has the highest networth: measure one: market capitalization
Market capitalization is the share price times the number of shares, and it is the usual way to rank companies by size. In recent years, the largest have been Nvidia, Apple and Microsoft, with Alphabet and Amazon not far behind. Nvidia became the first company to pass a market value of 4 trillion dollars in 2025 and later reported crossing 5 trillion, according to news coverage at the time. Rankings among these companies change often, and a few percent in share price can reorder them, so any list should carry a date.
Measure two: book value or equity
Accountants define a company’s net worth as total assets minus total liabilities, also called shareholders’ equity. On that measure, Berkshire Hathaway, the company run for decades by Warren Buffett, has reported one of the largest equity figures among US companies, in recent years above 600 billion dollars. Large banks, Apple and Microsoft also have large equity values, though Apple’s has been reduced by its large share buybacks.
Why the two measures differ
Market value includes what investors expect a company to earn in the future, including the value of brands, technology and market position that do not show up fully on the balance sheet. Equity is a backward-looking figure based on accounting records. A company with a strong brand and few physical assets, such as a software company, tends to have a market value far higher than its equity.
Other ways to rank companies
By revenue
Walmart and Amazon have been at or near the top of the Fortune Global 500 for revenue, which counts sales and not profit or value.
By profit
Saudi Aramco, Apple and Microsoft have reported some of the highest annual profits in the world.
By state-owned size
State-owned energy and banking companies in China and Saudi Arabia rank high on assets or profits, though their shares are often not freely traded.
A note on private companies
Some of the largest businesses are private and cannot be ranked by market value. Their values come from funding rounds and are estimates, such as for SpaceX or ByteDance, both of which have been valued at hundreds of billions of dollars in reported deals.
How to answer in a paper
1. Choose the measure and say which one you use.
2. Give the date and the source, such as a stock exchange or the company’s annual report.
3. Avoid mixing market value with net worth.
Why it matters
Investors use these rankings to track the influence of sectors. The dominance of technology companies in the top ten has been a major theme of the last decade, and concerns about concentration in stock indexes are a regular topic in financial news.
Questions readers ask
Is the biggest company the best investment?
Not necessarily. Size does not tell you about future returns, and past performance does not guarantee future results.
Which has the most cash?
Apple, Alphabet and Microsoft have held very large cash and investment balances, as have Berkshire Hathaway.
Where can I check live rankings?
Financial sites and stock exchange websites show real-time market capitalization.
A short history of the top spot
The title has changed hands several times in the past two decades. Oil companies such as ExxonMobil were at the top in the mid-2000s, and PetroChina briefly reached a very high value in 2007. After the financial crisis, Apple rose to the top and became the first US company to pass a trillion dollars in 2018, followed by Microsoft, Amazon and Alphabet. In the 2020s, the rise of artificial intelligence lifted chip makers such as Nvidia. The pattern suggests that the leader tends to reflect what investors believe the main growth story of the era to be. That is useful context for anyone writing about the topic, because it explains why a list from five years ago looks so different.
A note on reading estimates
Numbers about company rankings are repeated so often that an old figure can start to look like a fact. Name the source, give the year and describe the figure as an estimate or as a company-reported number. That keeps your writing accurate when the next report arrives.
*General information, not financial advice. Rankings change daily.*
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