An expense ratio represents the cost to own an ETF over the course of the year

The total cost of owning an ETF is the sum of the holding costs and the transaction costs

Holding costs include things like the expense ratio, or the annual fee that a fund issuer charges. Transaction costs include things like brokerage commissions, or the fee that a broker charges to enact a trade. However, in recent years, most brokers have essentially eliminated commissions on ETF trading.

Fees can eat away at your 401(k)

Every investment plan has an expense ratio—a percentage of the total assets that goes to the investment manager in the form of fees. Because 401(k) plans are so common, and many of their participants are not savvy investors, the relative expense ratio for them has often excessively increased.

The SPDR S&P 500 ETF is one of the most highly traded funds on the market

State Street, a popular ETF issuer, is responsible for the SPDR S&P 500 ETF. This fund trades under the SPY ticker, and State Street maintains a web page with key facts and figures on SPY. For instance, its expense ratio is 0.0945%, or $9.45 on an initial $10K investment.

ETFs and mutual funds are both taxed on capital gains and on dividends

Many experts consider ETFs to be more tax-efficient—ETFs are less likely to trigger capital gains taxes that must be passed on to the fund holder.

ETFs are rising in popularity

While less than half of retail investors hold ETFs in their portfolio, this figure is up dramatically in recent years, and experts forecast continued adoption as more options hit the market and total ETF assets under management continue to grow.

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.

Test your ETF knowledge

A 10-question quiz from the SEC allows investors to test their basic knowledge about exchange-traded funds and their investing counterparts, mutual funds. Here’s a sample question: Is the past performance of a fund a good indicator of future results? (Hint, the answer is no).

The fees for keeping a company listed on the NYSE are typically higher than the Nasdaq's

The current maximum annual listing fee for companies listed on the New York Stock Exchange was $500K as of early 2026. The maximum annual listing fee for companies listed in Nasdaq's top tier, on the other hand, was of $193K. Companies listed must pay these fees each year.

Hedge funds make money from imposing steep fees on investors, as well as from investment performance

Hedge funds often operate on a "2 and 20" model: Investors pay fund managers a 2% management fee, and the hedge fund keeps 20% of their profits. (The 2% is imposed annually, irrespective of performance.) Hedge funds are known for chasing big returns—and taking big risks to get them. This explainer not only breaks down how they work in detail, but also the strategy first introduced in 1949 that still shapes hedge fund investing today.

Private equity IRR is the internal rate of return on a PE investment or fund

It's typically expressed as an annualized percentage that incorporates both the size and timing of cash flows between investors and the fund. It's the discount rate that makes the net present value of all cash flows equal zero. Many private equity funds target a net IRR in the mid‑teens to low‑20s percent range, with an 8% "hurdle" or preferred return as a minimum before carried interest or "carry" is paid.

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.

Real estate investment trusts help give portfolios more exposure to real estate

Also known as a REIT, a real estate investment trust is a type of company that invests in a portfolio of real estate, such as apartment buildings or malls. Investors can buy shares of the REIT to participate in its portfolio’s gains and losses.

There are ETFs that track lawmakers' stock purchases

If you can’t get enough politics in your life, why not invest like a politician? Because members of Congress are required to disclose their stock purchases, you can do just that, and the NANC and KRUZ ETFs make it even easier. NANC, referencing Nancy Pelosi, holds a basket of stocks that Democratic politicians have purchased. KRUZ, referencing Ted Cruz, holds a basket of Republican-held stocks.

It cost the IRS $0.36 to collect $100 in 2024

It costs the IRS a significant amount of money to do part of its job—collecting money. For instance, the Internal Revenue Service spent $16.1B to collect $4.7T in taxes in 2023.

The costs and fees for a payday loan include a 'finance charge'

Payday lenders typically make money via finance charges, a percentage or dollar amount that the borrower owes the lender per $100 borrowed. While the finance charge can range from $10 to $30 for every $100 borrowed, this would equate to an annual percentage rate of almost 400 percent for a two-week loan.

Investors collectively own $28T in US Treasury securities

The 10-year Treasury yield is a central measure of the health of the economy, shaping how much both the government pays on its debt and the cost of borrowing for the private sector. This explainer provides stats and explainers on the important metric.

Long- and short-term capital gains have different tax implications

Short-term gains (assets held for one year or less) are taxed like regular income, at rates up to 37%. Meanwhile, long-term gains (assets held over a year) are capped at 20%, offering significant savings for high earners.

Historically, only about 1% to 2% of Americans had to pay the federal estate tax

Recent IRS data shows that between 2011-16, that number dropped even lower: The federal estate tax only impacts about 0.2% of Americans. Death taxes typically only impact the rich, and the federal estate tax is no exception.

The price of a mutual fund is based on its net asset value (or NAV)

The NAV is determined by the fund’s overall value minus its debts. A mutual fund’s debt is defined as any of its outstanding (or unsold) shares.

Jet fuel is expensive—which is one reason why it's tough to make an airline profitable

Jet fuel is typically a commercial airline's second-largest expense, second only to labor. Oil prices can be volatile—there have been recent significant increases in jet fuel prices given the 2026 Iran conflict, for instance.

A FIRE number is the amount of money someone needs in retirement

To calculate one’s FIRE number, FIRE followers typically multiply their expected annual expenses in retirement by 25.

Life insurance premiums can cost anywhere between $80 and $1K a month, depending on the policy

A life insurance premium is essentially the monthly cost or fee someone pays to an insurance company in exchange for a specified sum of money after their death to their beneficiaries. Factors like term length, health and lifestyle, and any added benefits can impact your premium.

Remote work offers a way for companies to save money on office space

Before the pandemic, real estate costs were between 3% to 9% of the typical S&P 500 company's budget (with the exception of companies in the energy industry). Eliminating some or all of a company's expensive office leases is one way that companies can save money by adopting work-from-home models. (Some users may experience a paywall.)

What a $1K investment in P&G stock 20 years ago would be worth today

If someone put $1K into P&G stock 20 years ago, it would be worth about $5.2K in 2025, making its annualized return about 8.6%. For context, the S&P 500 has had an annualized return of 10.7% over the same time period.

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.

The cost of college has more than tripled over the past five decades

Determining the all-in cost for each student’s specific circumstances can be tricky. But what is behind the rise in price? Analysts point to a number of factors—lack of transparency around cost, expansive government support, increased administrative burdens at schools, and more.

The Dow’s price-weighted formula makes stock price matter more than size

Unlike most indices, which weigh companies by market value, the DJIA is price-weighted—meaning higher-priced stocks have more influence on its movements. As a result, a company’s share price matters more than its overall size.

Peloton makes most of its money via monthly subscriptions

Peloton has two core revenue streams: the exercise equipment it sells and the company's monthly subscription that gives users access to its class library. More than half of Peloton's revenue comes from the company's core product, the monthly subscription. Its "Peloton App+" membership tier is $28.99 per month.

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.

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%.

Use this calculator to find the dollar value of your mental load, from meal planning to coordinating after-school care for your children.

The USPS spent $3.97B in 2024, accounting for .058% of the federal budget.

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

US housing costs have risen by roughly 175% between 1991 and 2026—but a growing number of Gen Zers are becoming homeowners anyway. In 2025, 4% of homebuyers were Gen Z, up from 3% the year before.

Fireworks-related ER visits are on the rise—in 2024, they increased by 52% as compared to the prior year.

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.

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.

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.

Shooting stars, or meteors, are fragments of asteroids and comets that burn up as they enter Earth's atmosphere, creating streaks in the sky called meteor showers.

Doctors differentiate between a phobia and fear by asking patients whether their fear interferes with their day-to-day activities.

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

Take a 3D tour of the Hajj, Islam's annual pilgrimage to Mecca, undertaken by more than 1.5 million Muslims each year.

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

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.

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

Some renewable energy sources may weaken the resiliency of electric grids by removing outage buffers provided by coal- and natural gas-fired plants, which provide the system with more time to find a new power source if a plant goes down.

Urushiol, the oily toxin in poison ivy, can remain allergenic on clothing for years.

Iran's Revolutionary Guard Corps is independent of Iran's regular army and is one of the most powerful and influential military-political organizations in the Middle East.

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.

Corals are themselves not coral reefs—the term refers to the tiny marine invertebrates that build the rigid reef.