FXAIX vs VOO: All You Need To Know

This article will compare FXAIX vs VOO.  Both the Fidelity 500 Index Fund (FXAIX) and the Vanguard S&P 500 ETF (VOO) remain among the best U.S. Stocks Large Blend funds.  They are among the best portfolios you can invest in and expect great returns.

Fidelity 500 Index Fund, FXAIX, is one of the simplest investments.  And, unlike other index funds, it has a relatively low turnover rate.

Vanguard S&P 500 ETF, VOO, on the other hand, is one of the most popular ETFs that focuses on long-term growth.  The fund invests in technology, healthcare, financials, industrials, and other industries and has a very low expense ratio.

Even though these two are great options for investing your money, it is best to compare them to make the best decision.  So what is a mutual fund and an ETF, and how do FXAIX vs VOO match against each other?

Read on to find out.

FXAIX vs VOO Graphic


What is a Mutual Fund?

A mutual fund is an investment fund that pools investors' monies to invest in securities such as stocks and bonds.  So, as an investor, mutual funds invest your money into stocks and other related investments, and you share in the profit.

Mutual funds are actively managed, meaning that a professional manages the investments.  Investing in a mutual fund offers some key benefits, which include:

  • Economies Of Scale
  • Diversification
  • Liquidity
  • Professional management


What is an Exchange Traded Fund (ETF)?

An exchange-traded fund (ETF) tracks an index, commodity, sector, and other assets.  However, just like a regular stock, they trade on stock exchanges.  In other words, you can view an ETF as a basket of securities you can trade on an exchange.

Investing in an ETF can diversify your portfolios, reducing risk by letting them participate in various securities.  ETFs, however, differ from mutual funds based on the time they trade – only after the market closes.



The main difference between FXAIX and VOO is that FXAIX is a mutual fund while VOO is an ETF.

FXAIX = Mutual Fund

VOO = Exchange Traded Fund (ETF)

With an understanding a mutual fund and an ETF, we can compare FXAIX vs VOO.  Since ETFs and mutual funds are containers for holding various investments, they are not very different variables.

Now, let's keep comparing FXAIX and VOO.


What Is The Biggest Difference Between FXAIX VS VOO?

The most significant difference between FXAIX and VOO is the brokerage that offers the fund.  FXAIX is from Fidelity.  VOO is from Vanguard.  They also differ in where they are available.

For example, you can find VOO on various investment applications and websites, while FXAIX provides the platform for issuing them.

401(k)s provide access to both ETFs and Mutual Funds, similar to how Fidelity and Vanguard issue FXAIX and VOO.

You can trade an ETF continuously, whereas orders for mutual fund shares are batched together throughout the day.  Mutual funds can be held until the conclusion of trading when shares are purchased and all orders received.


How To Invest In VOO

You can buy VOO on the Vanguard platform commission-free but only as whole shares. Investors looking to buy fractional shares can use platforms like M1 Finance. ***(Get $100 When You Use This Link To Create An Invest Account and Deposit $5,000 Within 30 Days)***

Normally, fractional shares are not available for ETFs, but with M1 Finance, you can purchase fractional shares for FREE.

Buying fractional shares allows you to maximize your investment.  This is especially beneficial for high-priced ETFs like VOO.

I suggest purchasing VOO through the Vanguard platform or with M1 Finance to avoid paying commission fees.

I also use Personal Capital to track my investment fees. They have a free Retirement Fee Analyzer that tells you the future impact of fees on your portfolio.

Personal Capital Retirement Fee Analyzer

Personal Capital's free tools allow you to quickly find which of your investments has high fees so you can switch them to low-cost options.  (Get a $20 Amazon Gift Card with this link when you add at least one investment account containing a balance of more than $1,000 within 30 days)


Is VOO The Same As FXAIX?

VOO and FXAIX are not the same; FXAIX is a mutual fund, whereas VOO is an exchange-traded fund.  Although both are containers for storing many investments, their work, protocols, and durations differ.


FXAIX VS VOO: Comparing Key Metrics

The Fidelity 500 Index Fund tracks the S&P 500 index, covering roughly 80% of the investable market cap of the U.S. equity market.  The S&P 500 is a choice for many investors because of the opportunity to diversify their portfolio, and as such, it can hedge volatility.  This makes it a good option for retirement.

FXAIX has $379 billion in net assets.  This fund is well-liked by retail and institutional investors alike.  And, with a 10-year return of 16.78%, it virtually matches the benchmark index's return of 16.79% (S&P 500 TR USD).  FXAIX expense ratio is 0.02%, which is considered low, and this fund does not have 12b1, front-end, or back-end sales fees.

VOO is a popular and reliable index fund in the United States.  The Vanguard S&P 500 ETF (VOO) invests in the stocks of some of the largest companies in the United States.  As an ETF, VOO also tracks the S&P 500 index by acquiring all of the equities within the fund.

VOO is notable as one of the simplest investments in securities, making it perfect for beginners who want to invest in broad-market funds.

VOO also offers the benefit of diversification, which can also mitigate risk to a large extent.

However, it's impossible to determine which investment vehicles are the finest without evaluating and contrasting their qualities.

Let's look at how they stack up on some key metrics.


FXAIX and VOO Holdings

FXAIX and VOO invest in virtually identical investments, and the portfolio's holdings help to diversify the portfolio.  These ETFs are both large-blended U.S. stock ETFs.

Below are the top ten holdings of FXAIX VS VOO.

FXAIX vs VOO Holdings


FXAIX and VOO Cost

If you're starting to invest and learning how fees affect your portfolio, fees are one of the biggest killers of portfolio development.  Over 30 years, the difference between a 2% cost and a 0.04% fee might result in your portfolio losing half its value.

FXAIX has a 0.015% expense ratio, whereas VOO has a 0.03% expense ratio.

Both of these funds have a similar fee in this scenario.

The Vanguard S&P 500 ETF (VOO) is less expensive than 96% of rival funds.

FXAIX has an expense ratio of 0.015%

VOO has an expense ratio of 0.03%


FXAIX and VOO Size

One factor to consider when looking for assets to invest in is size.  A huge fund does not automatically imply that it is a good fund, but it is one factor to consider when determining the best one.

FXAIX and VOO both manage around the same amount of assets.

VOO manages $770 billion, and FXAIX manages $379 billion.


FXAIX and VOO Performance

Many factors are considered while comparing the performance of FXAIX and VOO.  You might want to compare their returns to see how well they do.

The VOO fund invests all of its assets in the stocks that make up the target index in an attempt to duplicate them.

The FXAIX fund, on the other hand, invests at least 80% of its assets in common equities that are part of the Index.

FXAIX vs VOO Performance

I give a slight edge to VOO because it will deliver more consistent returns alongside the S&P 500.

Winner: VOO


Financial Independence (FI) Score

Because both of these products are U.S. Stocks Large Blend funds, you'll probably only need to invest in one.  They both have a comparable FI Score, with only a tiny variation.

A higher FI Score does not guarantee future growth but indicates that the fund meets the criteria for a strong fund.

FXAIX Score = 98

VOO Score = 95

The difference between these two's FI scores isn't that far apart.  They're both fantastic investments.

Winner: Both

JL Collins FIRE Calculator

Calculate Your FI Number With My Free FIRE Calculator

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What Should Know About FXAIX vs VOO as an Investor

VOO and FXAIX's Stock-Like features can be problematic for new traders.  Traders and speculators will benefit from the characteristics offered by VOO trading.  However, FIAX has a significantly greater initial commitment requirement than VOO.

VOO allows investors to put up “good-until-canceled” stop-loss and stop-limit orders.

While for the buy-and-hold investor with little or no experience trading equities, these might be problematic.

FXAIX provides a strong long-term return, is well-diversified, and is a low-risk option to invest in companies.

Despite some of the drawbacks of ETF investing, VOO's portability between brokerages makes it a preferable alternative for investors.

It is best for those just starting a long-term investment in an S&P 500 index fund.



FXAIX and VOO are mainly identical.  Both track the same collection of stocks (the S&P 500 Index) and are similar in dividend yield and annual returns.

They also offer incredibly low fees.

However, VOO is an ETF, while FXAIX is a mutual fund. You can't trade a mutual fund all day.

That being said, VOO may be most suitable for you if you are a beginner investor.


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