SAFE is a financial tool that stands for ‘simple agreement for future equity’

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.

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.

Health savings accounts evolved out of medical savings accounts introduced in the 1990s

After medical savings accounts in Singapore and South Africa proved successful, the US introduced a pilot program for small business owners and the self-employed to pair with high-deductible health plans in 1996. In 2003, Congress passed a law inspired by that program, and health savings accounts became tax-free and open to anyone with a high-deductible plan. FSAs, on the other hand, date back to the 1970s.

Securities is a term used to describe different types of investments

Not every type of investment qualifies as a security (like property or gold). Securities fall under four main categories (equity, debt, derivative, and hybrid) that serve different functions in the market.

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.

An S-1 reveals financial and other details to the public, often for the first time, when filing for an IPO

To file for an IPO, a company must file a registration form called an S-1 or prospectus with the US Securities and Exchange Commission. S-1s detail a company's current business model, competitive landscape, and other financial information.

Dive deep into the numbers that shape each YC deal

Y Combinator invests $500K into each company in any given batch. $125K of that investment converts into a fixed 7% in ownership of the startup, and the other $375K is invested on something called an uncapped MFN safe. YC explains what that means and more terms of the deal in a detailed article on their website

Angels invest in a mix of startups from different industries

To diversify their portfolios and mitigate their risk, angels may invest in startups that are at earlier or later stages of development, as well as in various industries.

Mutual funds are a type of shared investment strategy that pools money

Mutual funds can invest in stocks, bonds, or other types of securities. This method is a popular way for investors to diversify their portfolio with less risk, making it ideal for long-term financial goals (like retirement).

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

The FIRE movement stands for ‘financial independence, retire early’

FIRE followers typically prioritize high savings rates, relatively frugal living, and aggressive investing strategies in an effort to work less and enjoy life more in the long term. They range from low-income manual laborers to high-income tech workers and doctors.

Since the 1990s, banks have sold some of the credit risk of their accounts to external investors, known as SRTs, or synthetic risk transfers

This means if the account defaults, the outside investors assume most of the risk in return for some regular payments, freeing up the bank's ledger. It is a form of insurance used by banks to allow them to free up capital. In 2024, nearly $100B worth of SRT notes were sold.

Watch this video that uses Lego bricks to explain how venture capital works.

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.)

NASCAR’s SAFER barriers help reduce tragedies at races

Following the death of Dale Earnhardt Sr. in 2001, NASCAR changed its culture to be safety-first. Part of its changes were to install barriers along tracks that would help absorb the majority of g-forces in a crash. This Daily Downforce article walks through the history of the SAFER barriers, why NASCAR originally chose concrete, and how much of the tracks are covered today.

Written by 26 sovereign wealth funds in 2008, the 'Santiago Principles' provide generally accepted principles for fund management and governance

Sovereign wealth funds are not regulated, but many of the funds voluntarily follow the Santiago Principles (though, to a varying extent). Some of the principles include transparent financial objectives, clear accountability structures, regular performance reviews, and annual auditing.

Futures contracts are the primary way commodities are bought and sold

Selling futures contracts protects both parties from future fluctuations in pricing. It allows sellers of commodities to lock in some of their output, even if prices fall. Traders can eliminate some of the volatility inherent in commodities trading via these contracts.

Financial caregiving 101

In this podcast episode, a financial expert outlines how to prepare to financially take care of an elderly parent before they get sick or an emergency happens. This includes ensuring their payments are automated, getting access codes for their cell phones and accounts, and more.

The origin of the term STEM—science, technology, engineering, and mathematics—at the NSF

In 2001, Judith Ramaley coined the acronym while director of the National Science Foundation to replace "SMET," which was considered awkward-sounding. Since then, additional elements have been incorporated in various settings to modify the acronym, such as STEAM-based education, which includes art.

Fannie Mae and Freddie Mac are federal housing enterprises originally established to offer affordable housing loans to buyers

The Federal National Mortgage Association is commonly called Fannie Mae, and the Federal Home Loan Mortgage Corporation is called Freddie Mac. Since Fannie Mae’s creation in 1938 and Freddie Mac’s in 1970, they’ve become staples of the housing market.

Learn how stablecoins function in just 4 minutes

This video explains the basics of stablecoins in a beginner-friendly manner. It also dives a bit deeper into the larger stablecoin landscape, detailing, for instance, the many stablecoins backed by fiat currency other than the US dollar, like the euro, the Turkish lira, and the Singapore dollar.

The acronym NFT stands for non-fungible token

NFTs have developed as a secure way to use cryptocurrencies and the blockchain to create unique digital art, allowing the owner to prove ownership of a specific digital item.

Escrow is when a third party holds on to the money during a financial negotiation between two other parties

In the homebuying process, escrow typically happens while the buyer and the seller negotiate the terms of the sale. Escrow accounts can also be used to hold a buyer’s money when making payments on their loan.

The infrastructure, talent, and markets of Silicon Valley make the high-tech region ideal for startups

The number of startup employees, founders, and investors who have flocked to Silicon Valley over the years makes the California region ideal for networking in the tech space. Plus, California’s laws and specific rules around trade secrets help founders of fledgling businesses in Silicon Valley feel protected.

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.

'FAST': An acronym to remember stroke symptoms to look for

The primary factor in surviving a stroke is how quickly one gets the appropriate medical treatment. “FAST” refers to the four most noticeable symptoms of a stroke: face-dropping ("F"), arm weakness ("A"), speech difficulty ("S"), and "time to call 911" ("T").

529 plans can affect college financial aid

Income affects FAFSA financial aid determinations. FAFSA also takes 529 college savings plans into account. The percentage of savings it uses in its calculations depends on who owns the account (parent, student, or someone else). Other schools use a program called CSS to determine financial aid, and those determinations vary.

Kalshi is the first regulated prediction market in the US

Two migrant MIT students, Luana Lara Lopes and Tarek Mansour, shared an interest in hedging against uncertainty—from election outcomes to the Oscar awards. They fought hard for regulatory approval and their company now has a valuation in the billions. The platform has brought prediction markets into the mainstream.

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.

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

In recent years a child anxiety expert has created and tested a novel phobia and anxiety treatment approach for children, focused on changing how parents respond to the fears.

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.

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

Play the role of a student in a game where you try to navigate college and remain debt-free, selecting different income levels, high school experience, race, ethnicity, and more.

An investigation suggests a Scottish island became awash in forever chemicals via seafoam and seaspray—raising questions about what that means for the safety of other coastal areas.

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

'Silent' fireworks have gained more interest in recent years as a quieter celebratory option.

In 2026, Finland was named the world's happiest country for the ninth consecutive year based on its wealth, social safety network, and high life expectancy, among other factors.

The animatronic shark from Steven Spielberg's 'Jaws,' the first modern blockbuster, was a complex underwater apparatus called 'Bruce.'

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

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

Explore the known asteroids, comets, and spacecraft involved in asteroid studies within our solar system with 'Eyes on Asteroids,' a 3D visualization from NASA.

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.

Watch how algorithms can be designed to train themselves and self-improve without human input, to the point where the optimized code is too complex for programmers to understand.

The word 'jazz' evolved from 'jasm,' 19th-century American slang for 'energy'

Sunflowers have long been a symbol of nuclear disarmament because they can extract large amounts of radioactive cesium from soil.

Browse a detailed visual analysis of over 200,000 similes—comparisons that often use 'like' or 'as'—from popular fiction to see how frequently writers the same idiomatic expressions.

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

Explore chaos in this simulation of two double pendulums, where small differences in the release angles produce wildly different outcomes.

The Brothers Grimm were lawyers before they were storytellers, and became interested in fairy tales as they began investigating how rules and customs had been passed down through cultures.