FZROX Vs FXAIX – Which Fidelity Fund Is For You?

FZROX vs. FXAIX are mutual funds created by Fidelity Investments for long-term investors. Both funds invest in publicly traded US companies.

FZROX: Fidelity® ZERO Total Market Index Fund

FZROX or Fidelity Zero Total Market Index Fund is a mutual fund created and managed by Fidelity Investments. The aim of this fund is to track the returns of a wide range of stocks in the US stock market.

Here’s the top ten holdings of FZROX representing 24.06% of total assets.

Microsoft Corp. 5.26% Apple Inc. 4.97% Amazon.com Inc. 3.10% Tesla Inc. 1.91% Alphabet Inc Class A 1.88% Alphabet Inc Class C 1.77% Meta Platforms Inc. 1.63% NVIDIA Corp. 1.35% Berkshire Hathaway Inc. 1.12% JPMorgan Chase & Co. 1.07%

FXAIX: Fidelity® 500 Index Fund

FXAIX or Fidelity 500 Index Fund is another fund created by Fidelity Investments, and it contains S&P 500 index stocks. The fund invests in at least 80% of common stocks in the index.

Here’s the FXAIX’s top holdings representing 29.08% of its total value.

Microsoft Corp. 6.36% Apple Inc. 6.00% Amazon.com Inc. 3.75% Tesla Inc. 2.31% Alphabet Inc. Class A 2.27% Alphabet Inc. Class C 2.13% Meta Platforms Inc. Class A 1.97% NVIDIA Corp. 1.63% Berkshire Hathaway Class B 1.36% JPMorgan Chase & Co. 1.30%

FZROX Vs FXAIX: Key Differences

Where FZROX tracks the total market index, FXAIX tracks stocks in the US S&P 500. That means FZROX trades in small-, medium- and big-cap stocks. FXAIX, on the other hand, only trades in the S&P 500 index. That means this fund is focused on large-cap stocks within the US.


FZROX and FXAIX are low-cost funds, making them very attractive securities for long-term investors. FZROX is basically a zero-cost fund which means that you don’t pay a dime as expense fees. But as for FXAIX, you pay an expense ratio of 0.02%, which is also very low.

As with all investment choices, determining which of these two fits the bill will depend on your financial status, capacity, and plans. Know first these factors so you may have an informed and educated decision on the investment fund you will devote your time to.

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