See the 25 largest initial public offerings in US history.

2023's worst performing US IPOs

While an IPO is a huge milestone, it isn't always a total success in the long-term. This data visualization shows some of the worst-performing IPOs of 2023, based on their percentage returns at the end of the year, It includes an NFT gaming company and a Chinese EV battery company.

IPOs that failed

Plenty of private companies fail once they try to go public. Failing can mean shares sell for less than their initial asking price on its IPO date, or it can look like a company pulling out of the IPO process at the last minute. Some companies with failed IPOs include Pets.com, Etsy, and Robinhood. Learn more about these companies and others here.

Even iconic companies can get dropped from the Dow

The Dow’s lineup evolves as the economy changes. General Electric, part of the original 1896 index, was removed in 2018, after 122 years. ExxonMobil, once the world’s largest company, was replaced by Salesforce in 2020.

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

The number of publicly traded companies has decreased in recent years.

In 1996, more than 7,300 companies traded publicly on US stock markets, but that number has recently dropped to 4,300. Economists point to two reasons: First, going public requires full disclosure of operations, exposing it to scrutiny from investors, competitors, and analysts. Second, the IPO process is expensive and time-consuming.

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.

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.

Just because a big name company is going public doesn’t guarantee a successful stock

A reporter dove into how highly anticipated IPOs can still be risky, and why retail investors should be wary of investing right away.

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.

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.

See a real-time list of the most shorted stocks in the US

Every two weeks, the Nasdaq and New York Stock Exchange release the stocks with the most short positions. Some of the companies with the highest short positions as of early 2026 were Hims & Hers and Groupon.

The Dow now tracks 30 major US companies across various industries

Since 1928, the DJIA has included 30 firms. Today's group spans technology, healthcare, and finance—with Apple, Microsoft, JPMorgan Chase, Pfizer, and Coca-Cola among its most recognized components.

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.

Smaller companies’ IPO information can be hard to track down

This calendar keeps you updated on the current IPO dates and pricing from different companies. You can search for upcoming and future IPO dates and see which companies withdrew from the IPO process.

An initial public offering is how a private company becomes public.

This milestone requires plenty of preparation, starting with the SEC's S-1 registration, revealing key details about the company's finances and strategy. Investment bankers set valuations, secure long-term investors, and finalize share pricing before the public launch. IPOs provide companies with significant capital, but also demand transparency and invite public scrutiny.

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.

A list of public companies' filings

To go public, a company has to file a registration statement with the US Securities and Exchange Commission, also known as the SEC. You can find these filings on the SEC’s website to learn more about a company’s share pricing before its IPO date.

See which companies folded and which survived the dot-com crash

Companies that primarily used the web as a platform for doing business were more vulnerable than companies that created technology. While hardware and software companies managed to make it to the other side, most e-commerce companies took a brutal beating and share prices plummeted.

It's difficult for individual investors to purchase IPO shares

Although the process of going public means the general public can invest in a company, the initial investment period is different. Before individual investors get in on the action, investment bankers sell the shares to larger financial institutions who can afford the asking price and risk associated with an IPO.

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

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.

Initial public offering (IPO) is the term for when a company goes public

When a company completes its IPO, it's no longer a privately owned organization. Anyone can invest in the company by buying its shares on the stock market—opening up ownership of the business to the general public.

Digital coupon platform Groupon IPO'd in 2011 at a $17.8B market cap, but as of 2024 was worth just $103M—a 99.4% decrease.

The number of publicly traded companies has decreased significantly

The stock market hit a peak in 1996, when more than 7,000 companies were publicly traded. But in 2024, there were nearly half that many publicly traded companies.

In late 2025, the top 10 companies in the S&P 500 made up more than 40% of the index's total value

This raised concerns for investors about the index's risk exposure. As many large tech companies continued posting record highs, analysts argued that the top-heavy index was becoming less representative of the economy as a whole.

Find out how airline mergers created some of today's largest airlines

Four airlines dominate the US commercial airline industry: Delta, United, Southwest, and American. Many of these large companies secured their top spots in the industry via a series of mergers and acquisitions starting in the 1970s, when American acquired Trans Caribbean Airlines.

See a visual of the largest airlines in the US by market share.

PetSmart and Hilton are among 10 of the most famous leveraged buyouts in history

Some of the most famous leveraged buyout deals include Blackstone's 2007 acquisition of Hilton Hotels, in which Blackstone took the then-public company private and then returned it to the public markets in 2013. A British PE firm bought PetSmart for $9B in 2014—one of the most expensive leveraged buyouts since 2007.

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

Do you know Airbnb’s founders used cereal (yes, as in the breakfast food) to secure their initial round of funding? Or that PayPal’s founders once gave out free money to get people to sign up for the platform? These stories might be crazy, but they’re not uncommon.

The dot-com boom sent tech stocks soaring before a historic collapse

A look at the dot-com bubble, when investors poured money into unproven internet startups, driving the Nasdaq to dizzying heights before it crashed by more than 80% after 2000, showing how new technologies can detach markets from reality.

See every company in and out of the Dow since 1928

The index has had 30 companies since 1928. See each company’s tenure on the index and what firms were added or replaced by year and industry.

Explore America’s top companies by revenue in 1994 versus 2023

America’s top companies by revenue have changed a lot in the past few decades. Sears, for instance, isn’t on the 2023 list, while Amazon isn’t in the 1994 edition.

GE’s removal marked the end of an era for the Dow

General Electric, the last surviving original Dow component, was dropped in 2018, after years of decline. Its exit symbolized the fading dominance of industrial giants and the index’s shift toward technology and healthcare.

Google had a quirky, auction-based IPO.

In its sixth year, Google's shareholders reached a size where regulators would require the company to publicly report its financials. This prompted the company to go public through an unconventional style: the Dutch auction. The company auctioned its shares starting from a high price and dropping to a lower level.

Relive the biggest swings in the Dow’s history

From the 1929 crash to the Coronavirus Pandemic in 2020, this piece spotlights five of the most dramatic single-day moves in the Dow’s 125-year history.

A stock index is a group of companies clustered together, often providing a condensed snapshot of a market segment.

Companies go public via an initial public offering (IPO) to raise large amounts of capital, helping them expand, invest in new ventures, hire more staff, or pay off debts.

The 'big bang' of the dot-com era: Netscape's stock price doubled on the day of its initial public offering

The company behind the browser that revolutionized search went public on August 9, 1995. Just before the IPO, the company increased its initial opening price from $14 to $28. On the day the company went public, shares traded as high as $71 before closing at $58.25. The company's market capitalization exceeded $2B. The eye-popping IPO is largely considered the beginning of the dot-com bubble.

See the top 100 ETFs by trading volume

This list grabs the top 100 by trading volume, or the average number of shares that have traded hands over a 3-month period. Top of the list is a semiconductor-focused fund from Direxion, followed by other tech-centric offerings.