beginner
8 min read

What is an ETF? Complete Guide to Exchange-Traded Funds

ETFs explained: how they work, types, advantages, and how to use them in your portfolio.

What Is an ETF?

An ETF (exchange-traded fund) is a basket of securities (stocks, bonds, etc.) that trades on an exchange like a stock. Buy one share and you own a slice of hundreds or thousands of holdings.

Key Features

  • Trades like a stock: Buy and sell during market hours at real-time prices.
  • Diversification: One share = exposure to many companies or bonds.
  • Low fees: Many ETFs charge 0.03%–0.20% per year (expense ratio).
  • Transparent: Holdings published daily.

ETF vs. Mutual Fund

ETFMutual Fund
TradingIntradayOnce per day at NAV
Minimum1 shareOften $1,000+
FeesOften lowerVaries
Tax efficiencyOften betterCan have more distributions

Types of ETFs

  • Broad market: S&P 500, total US, total world
  • Sector: Tech, healthcare, energy
  • Bond: Government, corporate, international
  • Dividend: Dividend-focused strategies
  • Thematic: Clean energy, robotics, etc.

For beginners: Start with a broad US or total world stock ETF. One fund can be your entire stock portfolio.

Frequently Asked Questions

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What is an ETF? Complete Guide to Exchange-Traded Funds | Investors Lab | Investors Lab