The largest index funds concentrate too much money in their biggest holdings. The S&P 500 puts over 7% of its weight in Microsoft alone. The Nasdaq 100 is even more extreme, with Apple representing roughly 10% of the fund.
This concentration risk matters. When a single stock dominates your portfolio, one company's collapse can crater your returns. It also means you're not truly diversified across the market.
NerdWallet identified 19 exchange-traded funds that sidestep this problem. Each of these ETFs caps any single stock at 5% or less. This ensures your money spreads across many companies rather than riding on a handful of mega-cap winners.
These equal-weight or capped-weight ETFs include funds tracking various market segments. Some follow the broader market with tighter concentration limits than traditional index funds. Others focus on specific sectors like technology, healthcare, or financials while maintaining that 5% cap.
The trade-off exists. Equal-weight and capped-weight funds typically charge higher expense ratios than passive S&P 500 tracking funds. A standard S&P 500 ETF costs 0.03% to 0.04% annually. Some of the better-diversified alternatives run 0.2% to 0.4% per year. That difference compounds over decades.
Rebalancing also requires attention. Capped-weight funds automatically trim winners to stay under the 5% threshold. This forces a "sell high, buy low" discipline that benefits long-term returns but generates taxable events inside the fund. You'll pay taxes on distributions even in tax-advantaged accounts.
For investors concerned about concentration risk in tech-heavy benchmarks, these ETFs offer real protection. If you believe mega-cap dominance creates a bubble, a capped-weight approach reduces that specific bet.