Over a 20-year period, a $10,000 investment in S&P 500 (7% avg annual return) vs an active fund with 1% extra in annual fees — approximately how much less does the active fund return?

At 7% for 20 years: $38,700. At 6% (with 1% fee drag): $32,100. Difference ≈ $6,600. Fees compound just like returns — the 1% fee erodes about 17% of terminal wealth over 20 years.

What is the main advantage of index funds over actively managed funds?

Lower fees and consistent market-matching returns. Over 15+ years, ~80% of active funds underperform the S&P 500 after fees.

Name three major S&P 500 ETFs and their approximate expense ratios.

VOO (0.03%), IVV (0.03%), SPY (0.09%). VOO and IVV are cheapest and preferred for long-term holding.

What is the biggest behavioral risk in index investing?

Panic selling during market crashes. The strategy requires holding through drawdowns of 30-50%, which tests every investor's discipline.

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US Index Investing: Beat Most Pros by Doing Less

Buying a low-cost S&P 500 index fund is one of the most evidence-backed investment strategies for long-term wealth building. It outperforms ~80% of actively managed funds over 15+ years.

By Jim Liu · Published February 2026

TL;DR

Buying a low-cost S&P 500 index fund is one of the most evidence-backed investment strategies for long-term wealth building. It outperforms ~80% of actively managed funds over 15+ years.

What Is Index Investing?

Instead of picking individual stocks, you buy a fund that mirrors the whole market (e.g., S&P 500 = top 500 US companies). When the US economy grows, your investment grows with it. You own a tiny slice of Apple, Microsoft, Amazon, and 497 more companies with one purchase.

Key Terms:

index fundS&P 500passive investing

→What is an ETF?→Dollar-Cost Averaging

US Index Investing: Beat Most Pros by Doing Less

What Is Index Investing?

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