Dive deep into the numbers that shape each YC deal

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.

Explore the schedule of a three-month YC batch

During the three months that founders accepted into Y Combinator spend on YC’s California campus, they receive mentorship from YC partners, networking opportunities, and, overall, a ton of time to build and scale their companies.

Y Combinator tends to outperform many other Silicon Valley startup accelerators

In a podcast episode, Garry Tan—CEO of startup accelerator Y Combinator—speaks about how YC has a better track record than the rest of Silicon Valley at placing bets on startups. Learn how Tan earned his first million dollars, as well as lessons from other successful businesspeople, including Y Combinator’s Paul Graham.

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.

Startups are small, early-stage companies designed to grow fast

The definition of the word “startup” is complicated—so who better to define it than Y Combinator, perhaps the most well-known startup accelerator in the business? YC’s blog also explains how startups make money and build products.

YC was partly inspired by an investor named Julian Weber

Y Combinator Cofounder Paul Graham’s former professor’s husband Julian Weber provided $10K in seed funding to Graham’s previous startup, Viaweb in its early days. In exchange, Weber received 10% of the company. Weber’s involvement inspired Graham to start a program where investors were more involved with the companies they contributed seed funding to.

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.

CEO Gary Tan explains Y Combinators guiding philosophy

Hear YC President and CEO Garry Tan talk about why he values earnesty and excellent communication skills in YC founders, his thoughts on AI, and more in this unexpectedly deep and in-depth interview.

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.

80% of a VC firm's returns come from 20% of the deals, per VC's 'power law'

Early-stage startups are highly risky investments. Many companies in a VC portfolio will not provide any significant return.

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

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.

The Yale model of investment allocation, explained

College endowment managers long held to the traditional allocation of 60% domestic stocks and 40% bonds. But Yale’s David Swensen developed a new approach: deprioritizing low-risk fixed income and liquid assets in favor of alternative investments to leverage endowments' long-term investment horizons and capture the “liquidity premium.”

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.

Learn how to read a prospectus, the juicy document that any company must file with the SEC before going public.

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.

About 98% of companies offering employees a 401(k) plan match employee contributions

Broadly speaking, an employer 401(k) match means that if you invest money into your 401(k), your employer will put cash in, too. But these programs are often fairly nuanced.

Learn how to read a prospectus, the juicy document that any company must file with the SEC before going public

A prospectus typically contains information about the company's operations, including details about its management team and their compensation, financial statements, how it intends to use any capital raised by the IPO, and more. While these documents can be dense and lengthy, experts say that some of the most important sections of a prospectus for investors to look at include the risk factors section and the use of proceeds section.

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.

Investing in private equity is typically reserved for 'accredited investors'

Limiting PE to accredited investors helps protect less experienced investors from large and risky investments. Accredited investors must meet requirements set by the Securities and Exchange Commission—they're typically required to have a net worth exceeding $1M, for instance. (Some users may experience a paywall.)

Many dot-com companies spent some investor money on expensive parties

Parties hosted by dot-com companies were known to be extravagant and expensive. Technology companies in the Bay Area hosted between 15 and 20 parties a week on average, which cost between $30K and $50K on average.

Compounding, explained

During conversations about personal finance, the term "compounding" gets thrown around—but not everyone understands how compound interest and compound returns work. Broadly speaking, compounding is what happens when you not only earn returns or interest on your original investment, but also on the accumulated returns or interest you receive over time. This article explains how both of these processes function, and what compounding could mean for your wallet.

Was Google's acquisition of YouTube a good deal?

Google's acquisition of YouTube was a game-changer, but was it a good deal in retrospect? Here, the hosts of the popular "Acquired" podcast explore whether the deal measures up to the mythology, starting with a memo from early investor Sequoia Capital.

40 key stock market terms, explained

Liquidity. Forex. Capitalization. Blue chip stocks. These are just a few pieces of stock market vocabulary most people who don't spend all day on a trading floor might not know. Thankfully, we found a fun infographic that makes it easier to learn what 40 key stock market terms mean and why each of them matters.

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

Just like a horse with a spiraling horn on its head, private companies with a more than $1B valuation are rare creatures. But unlike the mythical creature, this type of “unicorn” is occasionally spotted in the wild. Unicorn companies include SpaceX, OpenAI, Skims, and more.

WeWork’s S-1 was full of alarming financial and business information that concerned investors and the public

When WeWork’s S-1 came out, investors were particularly concerned about WeWork’s expenses far outpacing its growing revenue and its complex company structure, as well as a few potential conflicts of interest within the company.

Hedge funds, the private investment firms that trade a wide swath of financial assets, make money by imposing steep fees on investors and from the fund's investment performance.

Mark Zuckerberg has nearly exclusive decision-making authority in Meta

Meta has a dual-class stock structure, meaning there are two types of stock that have different voting rights. Zuckerberg owns 90% of the company's Class B stock, which is allotted 10 votes per share, whereas Class A shareholders get one vote per share. He's also the CEO and the chairman of the board, meaning Zuckerberg has majority control over the company. (Some users may experience a paywall.)

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%.

A Yale student wrote a profound essay about the consulting industry's influence on elite college students that was published in a book of her writing after she died in a post-graduation car accident.

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

Read a deep dive on the 'all-purpose healing' peptide BPC-157.

Children are now three times more likely to say they want to be a YouTuber when they grow up than an astronaut, with some even attending 'YouTube camps' that teach kids how to create content for the platform.

The name 'Silicon Valley' arose from the founding of Shockley Semiconductor Laboratory in Fairchild Semiconductor in 1956-57, founded near Stanford University in Palo Alto

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.

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.

Calculate how much of your tax dollars go to each federal program based on your income, filing status, and number of children

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

Budweiser stores yeast derived from the original 1800s strain in a secret bunker, which only the Head of Yeast Management can access—not even the CEO

Some coin denominations have ridges etched on their sides, partly to prevent counterfeiting, in a practice called 'reeding.'

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

The most expensive ad of all time was for Chanel No. 5 perfume and cost roughly $33M to produce in 2004—about $57M in today's dollars.

The first steps to rebuilding your credit score include getting to know exactly what's on your credit report and figuring out how far you are from the '700 club,' or 'good score' range.

Despite being favored by 87% of Americans, Congress does not have term limits.

How fusion—which releases energy when two lighter atoms combine to form a heavier atom—differs from fission

Explore our favorite visualization of the immense scale of space, from an astronaut to the size of the observable universe

When caught in the mouths of cardinal fish, seed shrimp release glowing, bioluminescent chemicals, which alert predators of the cardinal fish, prompting the shrimp's ejection.

Researchers believe the brain consolidates memories, processes emotions, and plans for the future during dream states

Search a massive database of over 4 decades of clues from the TV quiz show 'Jeopardy!'

Ebola is a filovirus, meaning it resembles a thread under a microscope, though it sometimes twists and can resemble a bowl of spaghetti.