Index funds: why most pros lose to a $0 robot
S&P 500 index funds quietly beat the majority of professional stock pickers.
Last reviewed: · Reviewed by the Money Scale editorial team
An index fund passively tracks a basket of companies — like the 500 biggest US companies in the S&P 500. No human is picking winners; it just buys all of them in proportion.
~85%
Of active US large-cap funds
Underperform the S&P 500 over 15 years (S&P SPIVA, 2024). Fees + market efficiency are the reason.
Active funds charge 0.5%–2% per year in fees; index funds charge 0.03%–0.20%. That gap compounds against the active fund every single year — and most pros can't beat the index by enough to make it back.
$22,000
Hidden cost of a 1% fee
On $10K invested over 30 years — quietly gone to fund managers.
How to start
- •Open a brokerage account (Vanguard, Fidelity, Schwab — all free).
- •Buy a low-cost broad-market index fund or ETF (VTI, VOO, FXAIX, SWPPX).
- •Set up automatic monthly contributions.
- •Don't check the price.
Takeaway
Pick a low-fee broad market index fund, automate your contributions, and let time do the work.
What's the main reason index funds beat most active funds over 15+ years?