๐Ÿ“Œ Key Takeaway: Find the best index funds for long-term wealth building. Compare expense ratios, performance, and fund types from Vanguard, Fidelity, and Schwab. Our editorial team has researched the top options to give you clear, actionable guidance for your financial decisions.

Top Index Funds Compared

FundExpense RatioWhat It Tracks
Fidelity ZERO Total Market (FZROX)0.00%Entire US stock market
Vanguard 500 Index (VFIAX)0.04%S&P 500
Schwab Total Stock Market (SWTSX)0.03%Entire US stock market

Mutual Fund Index Funds vs. ETFs

Traditional index mutual funds (like VFIAX) and index ETFs (like VOO) often track the same underlying index with similar low costs โ€” the main practical difference is trading mechanics (mutual funds trade once daily at end-of-day price; ETFs trade throughout the day like stocks).

Why Index Funds Work So Well

  • Low costs: No expensive active management team to pay for, translating to lower fees passed to investors.
  • Broad diversification: A single fund can hold hundreds or thousands of underlying securities.
  • Consistent long-term performance: The majority of actively managed funds underperform their benchmark index over long time periods, net of fees.