The Data Is Clear
Over any 15-year period in history, low-cost index funds have outperformed approximately 90% of actively managed funds. This is not an opinion. It is data from S&P Global's SPIVA reports, published annually since 2002.
Warren Buffett put it simply: "A low-cost index fund is the most sensible equity investment for the great majority of investors."
What Is an Index Fund?
An index fund is a mutual fund or ETF that tracks a market index. Instead of a fund manager picking stocks, the fund simply owns every stock in the index in proportion to its size.
The most popular index funds track:
- S&P 500 - 500 largest US companies (VOO, SPY, IVV)
- Total US Market - Every publicly traded US company (VTI, ITOT)
- Total International - Companies outside the US (VXUS, IXUS)
- Total World - Everything, everywhere (VT)
Why They Work
Low fees. Index funds charge 0.03-0.10% per year. Active funds charge 0.50-1.50%. On a $500,000 portfolio over 30 years, that fee difference costs you $300,000+ in lost returns.
Diversification. Owning 500+ companies means no single stock can hurt you badly. When one company fails, the others carry the weight.
No decisions required. You do not need to research companies, time the market, or react to news. Buy regularly and hold.
Tax efficiency. Index funds trade less frequently than active funds, which means fewer taxable events.
The Simple Portfolio
You can build a globally diversified portfolio with just two or three funds:
- 60-80% US stocks (VTI or VOO)
- 20-40% International stocks (VXUS)
- Optional: 10-20% Bonds (BND) if you want lower volatility
Adjust the percentages based on your age and risk tolerance. Younger investors can lean more heavily into stocks. Closer to retirement, shift toward bonds.
How to Start
- Open a brokerage account (Vanguard, Fidelity, or Schwab are all excellent)
- Set up automatic monthly investments
- Buy your chosen index funds
- Do not check the price daily
- Continue for 20-30 years
That is it. The hardest part is doing nothing when the market drops. Every market crash in history has eventually recovered, and the investors who held through the dips came out ahead.
The Compounding Effect
$500/month invested in a total US market index fund at 8% average annual returns:
- After 10 years: ~$91,000
- After 20 years: ~$275,000
- After 30 years: ~$680,000
You contributed $180,000 over 30 years. The other $500,000 came from compounding. That is why starting early matters more than starting with a lot.
Ready to track your net worth?
Start building your financial picture today. Free to start, no credit card required.
Get Started for Free