The term 'startup'—which is typically used to describe private companies in their early stages of operation that focus on innovating new products or services to meet a market gap—can be traced back to a 1976 Forbes article.

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

Unlike small businesses, startups aim to disrupt entire industries

They also differ from small businesses in that startups have a higher level of risk, may take on outside funding from venture capital firms to boost growth, and more.

Many startups in a variety of industries try to reframe themselves as 'tech companies'

Tech is still the dominant industry for startups—in part due to its low barriers to entry, high growth potential, investor preferences, and the proliferation of tech into a wide variety of industries. Sweetgreen, the fast-casual salad chain, for instance, has often referred to itself as a tech company.

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

Working at a startup isn't for everyone, and is often more fast-paced than a run-of-the-mill job

Some argue that ideal startup employees have to be better than the average worker at managing uncertainty, acting with an "ownership" mindset rather than being a cog in the machine, and pushing limits.

Stanford’s ‘How to Start a Startup’ series

Stanford’s archive of lectures about creating a startup includes advice from Y Combinator notables such as former YC president and OpenAI CEO Sam Altman and YC Cofounder Paul Graham.

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.

How venture capital firms came to be

The venture capital firm that kickstarted an industry.

The dot-com bubble burst in the early 2000s

If you’ve heard of companies like Google and Yahoo, you’re already partially familiar with the dot-com bubble: a period from roughly 1995 to 2001, when internet companies were the hottest thing in venture capital. The “bubble” part of the term refers to the industry’s eventual implosion.

Y Combinator, the startup accelerator, gets its name from the 'Y combinator' computer science concept.

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.

Venture capital is a type of financing that firms and funds use to invest in startups they believe have the potential for long-term growth

Household name companies such as Airbnb and Uber might not exist without venture capital, which is commonly referred to as "VC" for short.

According to some estimates, roughly 75% of venture-backed startups fail, making startups inherently risky ventures.

'Founder mode' is the idea that startup founders should take a hands-on approach to running their businesses

In 2024, Y Combinator cofounder Paul Graham popularized the idea of "founder mode" when he wrote a viral manifesto in response to a talk that Airbnb CEO Brian Chesky gave about leadership styles. Graham positioned the concept of founder mode as the opposite of manager mode—when founders hire executives and middle managers to run their companies and make decisions that Graham says are better left to founders.

Startups fundraise in 'rounds' as they prove out their business and scale

When startups take on outside funding, those investments are divided into different "rounds." These rounds are catered to different stages in a startup's life cycle—a startup often needs different types of investors and amounts of funding at different stages of the business. For instance, a pre-seed investment round can include investments ranging from about $25K to $500K, whereas a Series D investment can be hundreds of millions of dollars.

Startup accelerators that include more training activities, such as pitch competitions, tend to have better long-term success rates

That's according to a new study from Wharton. Y-Combinator, perhaps the most famous startup accelerator, currently has 16 alumni companies trading on the public market. But not every entrepreneur who joins a startup accelerator makes it big.

Stanford and Harvard are among the universities producing the most startup founders

Not all startup founders are created equal. This data visualization of the universities that produce the most startup founders is based on the number of alumni who have raised venture capital funding for their companies. That means these alums had to do much more than put "entrepreneur" in their LinkedIn bio to be considered startup founders.

The Y Combinator startup directory includes every company YC has funded

The startup accelerator has funded more than 5,000 companies over the years. This YC-specific search engine lets you look up any company to find out if it's a YC alum.

Seed funding is often the first round of capital that a startup raises

Early-stage startups often try to secure seed funding from investors in order to take their idea from concept to reality.

Platforms like AngelList help angel investors find startups to fund

Angel investors leverage their high net worths to fund seed-stage startups. While they could see high returns, investing in such an early company is a risk.

Y Combinator changed the way startups around the world are built

Many of the philosophies that the leaders of Y Combinator have infused into the program’s portfolio companies have become the playbook for building the next big thing, such as its focus on founder personality and more.

Startup accelerators offer mentorship and seed funding in exchange for equity

Those programs, such as Y Combinator and Techstars, not only offer expert advice to founders, but also seed funding in exchange for equity. The goal is to help young startups learn from successful companies, making it more likely they attract venture capital.

Many of the 2010s girlboss-era founders experienced a public fall from grace in 2020

In the 2010s, dozens of female founders were celebrated on the covers of business magazines like Inc. for their recent startup success, from Emily Weiss’s Glossier makeup brand to Steph Korey’s Away luggage company. But many of these companies were also the subject of large takedown articles around the year 2020.

Many original dot-com company founders were bought out early on

The people who bought the original domains for dot-com companies and had the ideas to start businesses were often bought out by investors before becoming well-known companies. Both Pets.com and Broadcast.com were acquired early on.

From 19th-century whalers to startup accelerators, venture capital has a pretty exciting history

While the aforementioned whaling industry has a lot of similarities to today’s venture fund models, the first modern venture capital firm wasn’t founded until 1946.

Visualize where the first batch of founders from the famous startup accelerator Y Combinator are now.

'Founder mode' is the idea that founders should take a hands-on approach to running their businesses

In 2024, Y Combinator Cofounder Paul Graham wrote a viral manifesto of sorts about a strategy he calls "founder mode." It's the opposite of what Graham calls "manager mode," which allows founders to hire executives who he says ultimately run the company into the ground.

Global investing in startups hit a record $297B in Q1 2026

The level of startup funding around the world broke all previous records in Q1 2026 by a significant margin: Only $118B was raised in the previous quarter, and Q1's haul outpaced every full year of global VC activity before 2019. The increase was partly due to the enormous funding rounds from AI companies such as OpenAI and Anthropic.

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.

Coined in 1971, the man credited with naming Silicon Valley was originally writing about semiconductors

Silicon Valley gained its name from an article published in January 1971, in Electronic News. Author Don Hoefler used the term in his headline for an article he was writing about the semiconductor industry. Hoefler is credited with naming the multi-trillion dollar area that is still called Silicon Valley today.

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.

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.

Many startups now have shoes-off policies

This website keeps track of startups with "no-shoes" offices so you can browse a list of barefoot companies—plus, see which of them are hiring.

The term ‘angel investor’ is thought to have originated with Broadway plays

The first so-called angel investors funded theatrical productions. Now, angels invest in startups at an early stage, hoping their investment will pay off in the future.

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.

A post-game interview with Sophia Amoruso directly after her 2016 Forbes cover

This article from 2016 is a time capsule of sorts. It includes an interview with the person who coined the term “girlboss,” Nasty Gal founder Sophia Amoruso, that took place just after she appeared on the cover of Forbes magazine. We now know that her company would go on to file for bankruptcy the next year.

7 angel investors funded Google in its early days

Entrepreneur Shaan Puri shares how seven strangers acted as Google’s earliest angel investors. The first gave Google $100K without even putting his equity agreement in writing. The investors on “Shark Tank” use their personal funds to support startups, but they’re often more predatory about terms than typical angels.

Nonprofit VC funds invest in startups, but have donors instead of LPs

Examples include Andreessen Horowitz’s TxO (Talent x Opportunity) Initiative and Fifth Star Funds, which allows donors to write “Friends & Family” checks for Black tech founders.

The evolution of X, from startup to Musk-owned giant, reflects rapid tech shifts

Twitter began in 2006 as a side project and grew into a major global platform, widely used for news, activism, and political discourse. Despite mainstream success, it faced ongoing management turmoil, business struggles, and rising concerns over misinformation and user safety.

PayPal was started in 1998 by Peter Thiel

By the year 2002, PayPal went public for the first time—but that was far from the end of its business story. eBay later bought PayPal, then eventually spun it off. PayPal IPO'd for a second time in 2015.

Angel investors typically fund a startup at an earlier stage than venture capitalists

Angel investors and venture capitalists both invest in startups, but they differ in a few key ways. Angel investors typically invest earlier and in a smaller amount.

The dot-com bubble burst in 2000 when the Nasdaq dropped more than 76% in roughly 2 years

Between 1995 and 2000, the Nasdaq Composite index jumped from roughly 1,000 to 5,000 amid excitement over new internet companies. As venture capitalists dumped money into startups, those same companies struggled to turn a profit, leading to a bubble. The Nasdaq wouldn't reach its former high until 2015.

The world’s top 20 cities for startups include San Francisco

In 2023, Singapore had the highest venture capital funding per capita in the world. But that doesn’t necessarily mean it’s the best place to have a startup. In 2023, PitchBook analyzed data to determine the world’s best startup city, including fundraising activity, venture capital deals, and exit value. San Francisco ranked as No. 1. See which other locales landed in the top 20 with this graphic.

Read Paul Graham’s initial post announcing YC’s first batch

In March 2005, Y Combinator cofounder Paul Graham announced the program that would become Y Combinator on his website.

In 1994, Amazon was founded as an online bookseller

Books were just the start, as founder Jeff Bezos' ultimate goal was to create an "everything store," using the internet to transcend the physical limitations of brick-and-mortar retail. The Seattle-based Amazon gradually added CDs and consumer electronics, becoming a dominant e-commerce player in the late 1990s, and one of the few dot-com companies to make it through the bust.

Apple, the tech giant renowned for products like the iPhone, iPad, and Mac, started out in a garage in 1976.

Y Combinator was founded in 2005 to bridge gaps between founders and investors

In one of Paul Graham’s essays on his website, he took the time to explain how and why he and his cofounders (including his girlfriend at the time, and now wife, Jessica Livingston), came up with the idea of and eventually created Y Combinator.

Key moments in fintech history include the transatlantic cable’s invention and E-Trade’s founding

Founded in 1982, E-Trade was the first-ever online brokerage, pioneering a method of investing that is common today. Its story is part of a timeline that the New York Times put together of key moments in early fintech history.

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.

Convertible notes represent loans that startups owe investors

In the second part of a two-part series, convertible notes are explained to be a tool angel investors use to ensure they see a return on their investment in a startup.