Stocks, ETFs, and Equities Macro · ETFs

What an ETF is and how it's priced

Q: What is the cleanest one-line definition of an ETF?

Right. Diversification of a fund, convenience of a stock ticker. That is the ETF in one line.

Define an ETF as a basket of assets that trades like a single stock, and explain how NAV and intraday price relate.

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Stocks, ETFs, and Equities Macro

ETFs

Lesson 38 of 5569%

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Lesson 38 of 55Stocks, ETFs, and Equities MacroETFs

Today's tiny win: make one idea click.

Define an ETF as a basket of assets that trades like a single stock, and explain how NAV and intraday price relate.

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One ticker, hundreds of stocks

ETF stands for Exchange-Traded Fund. The name is the spec sheet. It's a fund — a pool of assets like stocks, bonds, or gold — and it's exchange-traded, meaning you buy and sell it on the same exchanges where individual stocks trade. The result is a hybrid: it gives you the diversification of a mutual fund with the convenience of a single stock ticker. Type SPY into your broker app and you own a slice of the entire S&P 500 in one click.

Wick saysAn ETF has two numbers: NAV, set once a day, and the live price that moves all day.

How is an ETF priced? Two numbers matter. The first is NAV, or net asset value. NAV is the total value of everything inside the basket — every share of every company the ETF holds — divided by the number of ETF shares outstanding. NAV gets calculated once a day after the market closes. The second number is the market price, the live quote you see when the exchange is open. The market price moves second by second as people buy and sell the ETF itself, while NAV updates only at the end of the day.

Why does this matter to you? Because an ETF lets you buy a whole strategy in one trade. Want exposure to all 500 S&P 500 companies? Buy SPY. Want every NASDAQ-100 name? Buy QQQ. Want the energy sector without picking a single oil stock? Buy XLE. You skip the work of buying dozens of stocks yourself, you skip rebalancing, and you typically pay a tiny annual fee (the expense ratio) measured in fractions of a percent. With $500 of capital, fractional shares now let you buy partial ETF shares too — so price-per-share is no longer a barrier.

Wick saysETFs charge a small yearly fee called the expense ratio, often a fraction of 1%.

Recap: an ETF is a basket of assets that trades like a stock. Market price moves all day, NAV is struck once a day, and arbitrage keeps them close. Next lesson: the big three S&P 500 ETFs.

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1. What is the cleanest one-line definition of an ETF?

2. How often does NAV get calculated for a typical US ETF?

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