The world's 50 most valuable private companies

While public companies typically have the highest valuations, private companies get close. This list breaks down the top 50 as of 2025, with SpaceX at the top with a value of $350B, followed by ByteDance. Over three-fifths of the list are located in the US, with eight in China.

SPACs, explained

Special purpose acquisition companies make it easy for mature unicorns (companies valued at over $1B) to receive growth capital by going public. This process effectively skips the work of a traditional initial public offering, and its time-intensive investor negotiations. Typically, a well-known investor with expertise in a certain industry sponsors a SPAC with the intent to acquire a startup. Learn how it works and the risks involved here.

Private companies are often harder to value than public companies

That's partly because there isn't readily available stock information, and financial accounting is kept behind closed doors. Typically, determining the value of a private company involves, among other things, closely comparing the private company with its competitors.

SpaceX's S-1 or 'prospectus' revealed many previously unknown details about the company

Those revelations include the company's unprofitability despite doing $18.7B in revenue in 2025, exactly how many voting shares Elon Musk will have in the company (roughly 85%), and more.

Walmart was the first traditional retailer to crack the $1T club

In early 2026, the company joined major tech companies Nvidia, Apple, and Meta (among others) as one of the rare firms with a market capitalization beyond $1T. See the latest top companies here.

The top 100 companies in Silicon Valley

Silicon Valley has pumped out some of the biggest companies in the world, including Apple, Meta, and Google. Thousands of companies operate in the area, ranging from valuations in the trillions to startups only worth thousands.

Billionaires are racing to space to control future markets

Although different companies have described focuses ranging from luxury tourism to Martian space colonies, all are building infrastructure to capitalize on the shift away from government-only control and betting big on reusability and scale. By securing public contracts and subsidies, they aim to develop strategic partnerships toward dominance in low Earth orbit.

Special-purpose acquisition companies let companies skirt the IPO process

A video explains how private companies have taken advantage of this loophole, why investing in these companies isn’t always a good idea, and how blank-check companies (as they’re commonly called) work.

The 50-100-500 rule: when a startup is no longer a startup

According to startup expert Alex Wilhelm, a company cannot be considered a startup if it generates revenue exceeding $50M, employs more than 100 people, and has a valuation of $500M or more. However, Wilhelm modified the rule in 2018 to $100M in revenue, over 500 employees, and a valuation of $2.5B or more.

Many of the top companies in the US by market cap began as tech startups

Combined, the top seven companies by market cap in the US as of December 2024—Apple, Nvidia, Microsoft, Alphabet, Amazon, Meta, and Tesla—were worth more than $16T at the time.

See how SpaceX compares to history's other largest IPOs.

Cyan Banister, once homeless, was an angel investor in Uber, SpaceX, and DeepMind.

How to visualize the enormous wealth of Elon Musk

The disruptive innovator and founder of SpaceX and Tesla is worth hundreds of billions of dollars, an unimaginable sum. This simple interactive visual uses pixels (representing $1K each) on a scrolling screen to demonstrate the billionaire's wealth compared to other known financial values, like the cost of building a Boeing 777 or the net worth of Tiger Woods.

Listen to a 2026 interview where Bumble's CEO said its stock is down 96% since its IPO 'for no reason'

CEO and Founder Whitney Wolfe Herd said the company is still performing very well. She added that the business makes $1B per year and referred to it as profitable. She went on to say "who knows what people trade stock on?" and that she believes the stock market has written Bumble off as if it were debt

In 2018, Apple became the world's first publicly traded trillion-dollar company

The valuation was made possible by Steve Jobs' return to the company in 1997, who implemented a simplification strategy by cutting the majority of Apple's existing product line. His promotion of Jony Ive to SVP of industrial design would help popularize Apple through colorful products and marketing.

OpenAI CEO Sam Altman has called OpenAI 'the most capital-intensive startup in history'

As of 2024, Silicon Valley was set to spend $1T in the coming years building AI. As companies, including Google and Microsoft, fling billions at AI dreams, concerns are rising about whether that money will ever be recouped. To learn about the argument that there is an AI bubble—and that it could soon burst if AI doesn't prove its worth—read this article.

Read about the day Palantir went public in 2020

After more than 15 years in business, Palantir held its initial public offering (IPO) via a direct listing—meaning the company didn't rely on underwriters to assess the initial trading price or stock value. Palantir's stock ended the day trading 31% higher than the reference price.

Millions of Americans will be invested in SpaceX because of the fast-tracked process to list SpaceX on the Nasdaq 100, and, subsequently, the index funds that track it.

See Berkshire Hathaway's current market cap and cash on hand

Warren Buffett's holding company, Berkshire Hathaway, has one of the highest-valued stocks in history due to its collection of successful companies. As of 2024, Berkshire owned companies including Dairy Queen and GEICO.

Some private credit funds trade on the stock market

These funds, which trade at market prices, are called "public BDCs," which stands for "business development companies." For instance, the global alternative investment manager Ares Management Corp. has a public BDC.

Understanding TikTok-owner ByteDance's business model

ByteDance has ridden TikTok's major success to become the world's most valuable startup. This deep dive showcases some of the company's smartest moves and tactics, and where it's headed next.

'Startups' can be defined as small, early-stage companies that are designed to grow fast.

More than $3.5B has been invested through AngelList

AngelList was created to connect startups and angel investors. It’s evolved since its 2010 founding and has been used by companies like Uber and OpenSea.

Ride along on one coffee company's journey through the stock market to better understand how a company goes from private to public.

In 2023, venture capital firms invested $170B in over 15,000 US companies

That's a significant drop from 2022’s $242B, reflecting market uncertainty but continuing VC’s role in scaling transformative ideas. Rooted in early risk-sharing models, venture capital took off with firms like ARDC in 1946, later evolving into today’s influential players like Sequoia Capital and Andreessen Horowitz.

Google’s CEO has warned that today’s AI boom shows ‘elements of irrationality’

An interview with Alphabet CEO Sundar Pichai warns that the trillion-dollar surge in AI valuations may contain clear signs of irrationality, echoing past tech bubbles. He says no firm—including Google—would be immune if the boom cools or bursts.

Listen to a podcast episode about the time a 'Bored Ape' NFT—a valuable, unique digital asset stored on a blockchain—was kidnapped.

More than 650 companies went public in the US in 1996

As the dot-com bubble reached its peak, most dot-com companies went public with little proof of being profitable and were often overvalued. In 1999, the Nasdaq's price-to-earnings ratio (a tool used to determine a stock's value that divides its price by earnings) hit 90.2, signaling that many companies were operating at a net loss. Startups promised investors that more time and money would help scale their businesses and become profitable.

See Bloomberg's continuously updated Billionaire Index

This ranking, updated daily, shows a running tally of the world's 500 richest people. Tesla and SpaceX CEO Elon Musk has largely been atop the list, with a net worth of around $723B as of June 2026. Values fluctuate significantly as much of the wealth is tied to equity in companies. (Some users may experience a paywall.)

Many startup founders pull out-of-the-box stunts to get their businesses off the ground.

Ranking valuations of NBA teams

NBA teams were worth a total of $138B in 2024, with the Golden State Warriors the highest-valued at over $9B, according to research and analysis conducted by sports business outlet Sportico. Dive into the data with this write-up and visualization.

Worth more than $14T, Silicon Valley may be getting too expensive for future founders.

Theranos and Pets.com are among some of the biggest startup failures ever

You might have heard of Theranos, Elizabeth Holmes’s one-time blood testing company that landed the founder in prison for more than a decade after she was charged with fraud. The rest of the startups on a list of five of the biggest startup failures ever might not be as famous as Theranos, but they were met with similarly disastrous fates.

The global horse market is worth about $400B

In this podcast episode from a new series on horses, Freakonomics explores the market around buying and selling some of the world's top sport horses, and the nebulous forces that make them so valuable.

Meme stocks often have little underlying value but are fueled by crowd funding

"Meme stocks" is a phrase originating in the early 2020s, referring to companies with little underlying value who gain recognition through social media and whose stock price experiences rapid gains.

See a ranking of the world's most valuable brands

Evaluating a brand's value involves evaluating investments in marketing, the strength of the brand, and even the company's performance. Technology companies represent most of the global economy's brand value. As of 2026, Apple has the most valuable brand in the world at $608B.

Legendary venture capitalist Peter Thiel once wrote that 'competition is for losers'

With Peter Thiel's "Monopoly Theory," the Founders Fund partner argued that investing in companies that create new categories, rather than those that compete with other businesses in existing ones, is a best practice in venture capital.

WellHub is a startup serving roughly 4 million people in 11 countries, providing broad wellness benefits to employees

Valued at $2.4B in 2025, the company helps workers get gym access and meditation apps, in addition to basic healthcare. Listen to the founder of the company, Cesar Cevalho, explain how he scaled the company with Jeff Berman.