A 'unicorn' is a private company with a $1B-plus valuation

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.

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

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 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.

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

Cyan Banister has invested in more than 100 companies, building a reputation in the angel-investing world for her unorthodox approach.

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

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.

Medieval elites prized narwhal tusks as mythical “unicorn horns”

During the Middle Ages and the Renaissance, narwhal tusks were believed to be unicorn horns, possessing healing and anti-poisonous properties. Coveted by Europe’s elites, they became royal gifts—with one even presented to Queen Elizabeth I by explorer Martin Frobisher.

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.

Euphoric narratives are just one indicator of an economic bubble

A conversation with investor Jeremy Grantham outlines the indicators he watches for bubbles, including extreme valuations. He then compares those signals to today’s AI boom, arguing it shows several early signs of classic speculative excess.

Venture capital is a form of funding provided to early-stage companies with high growth potential, typically in exchange for an equity (or ownership) stake

Some companies like to make their IPO day antics unique

An article details some of the wildest bell-ringing day stunts in recent history, from Clifford the Big Red Dog ringing the opening bell to one company's employees roasting marshmallows in a campfire on Wall Street as it went public.

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.

The okapi was once considered a cryptid, or an animal with an unverified existence

Similar to dragons or Bigfoot, the okapi was once believed to be a mythical animal, known colloquially as an "African unicorn." Its confusing features include zebra-like legs on a donkey-esque body with a giraffe-like head. However, this animal is both real and quite cute.

WeWork, once a unicorn, declared bankruptcy in 2023

This podcast episode chronicles the complete rise and fall of WeWork—from its founding in 2010 to its eventual 2023 bankruptcy.

NFTs are unique assets that exist on the blockchain

This SNL skit accurately defines non-fungible tokens in a song and skit. They are cryptographic tokens that represent digital assets like art, and their value can be volatile.

Explore the 2025 Uber lost & found index

A chainsaw. Ten live lobsters. A mannequin head with human hair. These are just a few curious items passengers left behind in Ubers this year, according to Uber itself. Uber is among the largest gig economy platforms in the US, with a valuation of roughly $150B as of 2024.

One $100 investment in the Medallion Fund skyrockets over time

The Medallion Fund, the famously secretive quant fund that invests billions of dollars for the partners and employees of a single firm with a legendary track record, has trounced the market for more than three decades. While its results are an extreme outlier, this visualization showcases the power of compound interest.

Palantir's services allow both companies and the government to analyze complex data

There's a common misconception that Palantir buys, sells, and shares data, but Palantir insists it isn't a data broker. Rather, Palantir is more like a data analytics company that allows corporations and government agencies to combine messy, large, and often hard to access datasets to gather insights.

An initial public offering or 'IPO' is the process of a private company becoming public by putting shares of the company on the stock market for purchase.

Internet domain names can be worth millions of dollars

And yet, the mysterious man who owns Milk.com likely isn't selling his valuable site any time soon.

A startup is trying to create the diamond equivalent of the gold standard

It's called the Diamond Standard Co, and it uses an algorithm to assign standard values to a variety off small diamonds, grouping them together into individual coins. Historically, diamonds haven't been able to be classified as commodities or standardized like gold because they aren't uniform—factors such as clarity, cut, color, and carat size significantly influence the value of a diamond.

16 credit unions with almost no membership requirements

One of the hallmarks of credit unions is that they tend to be exclusive. For instance, one of the largest credit unions only does business with Boeing employees. However, this roundup introduces 16 credit unions that have practically no membership requirements. Interested customers may need to guarantee $5 minimum deposits and in some cases, make a donation to an affiliated charitable organization.

Warren Buffett turned a struggling textile mill into Berkshire Hathaway

With Class A shares trading at over $700K per share, Berkshire Hathaway's high stock price reflects Buffett's decades of long-term investing, major acquisitions, and a philosophy that has reshaped modern finance.

The Nasdaq's 'Magnificent 7' companies are responsible for roughly 40% of the Nasdaq 100 index's gains, while the remaining 93 companies account for the other 60%.

In 2025, four executives from large tech companies were given positions in the US Army Reserves—including Palantir Chief Technology Officer Shyam Sankar, which reinforced Palantir's ties with the US military and its role as a leading defense partner.

Dozens of S&P 500 stocks, including Coca-Cola and Walmart—known as the dividend aristocrats—have increased dividends every year for 25 years

How Amazon operates a 'flywheel' business model, a self-reinforcing cycle that drives continuous growth

Memecoins are a type of cryptocurrency—a form of digital currency with a wide variety of uses—created around popular 'memes,' or viral internet jokes.

Larger animals like giraffes, elephants, and blue whales have developed a unique defense against cancer, a phenomenon known as Peto's Paradox

While the first exchange-traded fund (a 'basket' of different assets that can be bought and sold on a stock exchange) in the US only launched in 1993, the global ETF market has grown to more than $10T in the short time since.

Most of the observable universe's volume consists of voids and supervoids—enormous regions of space with little to no galaxies, stars, or light.

Explore fun facts from the USPS, including unique post office buildings, a stamp that traveled past Pluto, and more.

See how Budweiser's famous Clydesdales spend their days at Warm Springs Ranch, where roughly 70 to 80 of the beer brand's giant horses can be found at any given time.

Some Pokémon have been named after real and fictional organisms, while some real-world species have been named after Pokémon, such as Chilicola charizard and Binburrum zapdos.

The 1987 Nintendo video game 'Stadium Events' isn't known for being particularly fun, but its scarcity has made it a highly sought-after item that has sold for up to $35K at auction.

The idea for the Federal Reserve was conceived in secret in 1910—with bankers donning duck hunt gear for disguise while traveling to a remote country club on Georgia's Jekyll Island

US consumers collectively owe more than $1T to credit card companies—almost as much as they owe in auto loans.

While atoms are normally made of protons, neutrons, and electrons, exotic ones have been built with antimatter—alternate versions of normal matter that live for fractions of a second and are about a billion times as rare.

All rainbows are 'raincircles' caused by water droplets separating white sunlight into a spectrum of colors, but Earth's surface blocks the bottom half of the circle from our line of sight.

Up to a million Girl Scouts sell about 200 million cookie boxes every spring, generating $800 million, largely because refusing a child is frowned upon

The price of gas is a composite made up of several different factors, with the federal gas tax making up less than 20% of what drivers pay at the pump.

Fireworks make a loud booming sound after exploding due to air expanding faster than the speed of sound.

Art theft is the third-largest source of criminal revenues worldwide, thanks in part to the subjective nature of valuing a work of art.

About 2,000 US babies are born annually without some portion of their limbs, potentially leading to a lifetime of pricey prosthetics.

SpongeBob exemplifies Aristotle's philosophy for living well because he understands that happiness doesn't come from external factors like money, recognition, or power.