investing9 min readMay 21, 2026

ETF Investing 101: Everything Beginners Need to Know

Exchange-traded funds explained — how they work, why they outperform most active managers, and how to build a simple ETF portfolio.

Rishi Mohan, Founder of WealthWise
By Rishi Mohan, Founder
Founder · 10+ years investing · May 21, 2026

ETFs (Exchange-Traded Funds) have democratized investing, giving everyday investors access to institutional-grade diversification at near-zero cost. Here's what you need to know.

What Is an ETF? An ETF is a basket of securities (stocks, bonds, or other assets) that trades on a stock exchange like a single share. When you buy one share of SPY (S&P 500 ETF), you own a tiny slice of 500 companies.

Why ETFs Beat Most Active Funds Expense ratios matter enormously over long periods. Vanguard's VOO charges 0.03% annually. A typical actively managed fund charges 0.75-1.5%. On a $100,000 portfolio over 30 years with 7% returns: - ETF (0.03%): $747,000 - Active fund (1.0%): $574,000 The difference: $173,000 — paid in fees.

Core ETFs to Consider - VTI: Total US Stock Market (0.03% expense ratio) - VXUS: Total International Stock Market (0.07%) - BND: Total US Bond Market (0.03%) - VOO: S&P 500 (0.03%) - QQQ: NASDAQ-100 (0.20%)

A Simple Three-Fund Portfolio 60% VTI + 30% VXUS + 10% BND gives you exposure to thousands of companies worldwide with minimal cost. Adjust bond allocation based on your age and risk tolerance.

Where to Buy Fidelity, Schwab, and Vanguard offer commission-free ETF trading. All three have no account minimums for brokerage accounts.

WealthWise Education — for informational purposes only. Not financial advice.
Free Tool
Compound Interest Calculator

See how your investments grow over time with our free compound interest calculator.