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Getting started as an investor can be overwhelming. After all, there are more than 7,000 mutual funds to choose from. So sometimes it helps to start simply, by looking at one or two fund families that have built a reputation for quality.

To us, that includes looking at Fidelity—and more specifically, low-cost Fidelity index funds that can serve as the building blocks of a starter portfolio.

Warren Buffett himself has repeatedly said that index funds are the best option for most investors. And Fidelity is one of the leading managers of index funds with some of the absolute lowest fees in the business.

The question becomes: How do you go about deciding which Fidelity mutual funds or exchange-traded funds to buy? Well, we’re here to help with that.

Read on as we explore the best Fidelity index funds for the beginning investor. These funds span a number of investing strategies, meaning there should be at least one fund here for everyone—and most investors should see several suitable options for building a starter portfolio. While we’re at it, we’ll also introduce you to index investing as well as Fidelity itself. And we’ll finish it off by answering a few frequently asked questions.


Disclaimer: This article does not constitute individualized investment advice. These funds appear for your consideration and not as personalized investment recommendations. Act at your own discretion.

What Is an Index Fund?

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Most investors own index funds, whether they realize it or not. They are the dominant investment vehicle in most retirement plans these days, and with good reason: Low-cost index funds generally perform as well or better than most actively managed funds.

And naturally, Fidelity index funds are leaders in this space. Some of the very best Fidelity index funds boast zero minimum investments and some of the absolute lowest fees you’ll ever find.

But if you’re new to investing, you need to understand what index funds do. So first, let’s look under the hood to see what makes the best index funds tick.

The best way to explain index funds is to compare them to their cousins: actively managed funds.

Actively managed funds are run by one or more fund managers, who collect money from investors, then allocate that money to stocks, bonds, or other assets. With active funds, the managers are often tasked with beating some sort of benchmark index, but they’ll generally have a lot of discretion as to what they can buy and sell to accomplish that.

Index funds, in contrast, are passive. The fund manager isn’t actively looking to “beat the market” or “beat an index.” They’re simply looking to mimic a stock market index—like, say, the S&P 500—enjoying that underlying investment exposure.

Let’s use the S&P 500 as an example. The S&P 500 holds the stocks of 500 companies, but it doesn’t hold equal amounts of each—it “weights” each stock by size. The larger the market capitalization (stock price times number of shares outstanding), the larger the percentage of the index is allocated to that stock. As I write this, the S&P 500 gives tech stocks Apple (AAPL) and Microsoft (MSFT) 6% and 7% weights, respectively. So an index fund mimicking the S&P 500 should dedicate 6% of its assets to AAPL, and 7% to MSFT.

The primary advantage of actively managed funds is that a talented manager can potentially outperform over time and might be adept at navigating a difficult period such as a bear market. But you pay for that possibility in the form of higher fees and often worse tax efficiency.

With index investing, you generally get much lower costs in terms of management fees and trading expenses, better tax efficiency, and performance that often ends up being better than that of many active managers.

If you believe the stock market will generally rise over time, an index fund is the easiest and most direct way to get exposure.

Mutual Funds vs. ETFs

Mutual funds and ETFs are similar vehicles that have a few key differences. But also confusing the conversation is that many people use the term “index funds” interchangeably with “exchange-traded funds (ETFs),” and “actively managed funds” with “mutual funds.”

While there’s a lot of overlap, they’re not the same thing. So, we’ll tackle the differences between mutual funds and ETFs, and explain why people are so quick to automatically equate them to index or actively managed products.

Mutual funds

When you invest in a mutual fund, you (or your broker) actually send money to the fund company, which in turn uses the cash to buy stocks or other investments. When you want to sell, the fund company will sell off a tiny piece of the securities the mutual fund owns and send you the proceeds. Money generally enters or exits the fund once per day.

Mutual funds are the traditional vehicles of choice for 401(k) plans or other situations when an investor is dollar-cost averaging, which means investing in regular installments. If you have a specific dollar amount to invest each month, whether it’s $100 or $10,000, a mutual fund will generally be able to accommodate you easier than an exchange-traded fund.

But the key here is that you don’t need a specific amount based on the price of a share. Once you meet the minimum initial investment (a certain dollar amount you must invest when you first buy the fund), you can generally invest just about any amount.

The thing is, most mutual funds are actively managed, which is why people conflate “mutual funds” and “actively managed funds.” But there are numerous index mutual funds.

The best Fidelity mutual funds tend to be some of the cheapest in the business in terms of fees, many of them indexed. And there are Fidelity index funds for virtually every stock market index you can imagine.

Exchange-traded funds (ETFs)

Exchange-traded funds (ETFs) are actually very similar to mutual funds but feature a handful of significant differences that may make them superior in certain situations.

Like traditional index mutual funds, an ETF will hold a basket of stocks, bonds and other securities. These can be broad and benchmarked to a major index like the S&P 500, or they can be exceptionally narrow and focus on a specific sector or even a specific trading strategy. For the most part, anything that can be held in an exchange-traded fund can also be held in a mutual fund.

However, unlike mutual funds, ETFs trade on major exchanges—such as the New York Stock Exchange or Nasdaq—like a stock. If you want to buy shares, you don’t send the manager money; you just buy shares from another investor on the open market.

The need to buy shares can be problematic when dollar-cost averaging. As an example, let’s say you have exactly $100 to invest, but the shares of the ETF trade for $65. You can only buy one share, and you’re stuck with $35 in cash uninvested.

But ETFs have their own advantages. For one, they have intraday liquidity—that is, if you want to buy or sell in the middle of the trading day (or multiple times throughout the trading day), you can.

The second advantage is tax efficiency. In a traditional mutual fund, redemptions by investors can generate selling by the manager that creates taxable capital gains for the remaining investors who didn’t sell. This doesn’t happen with ETFs, as the manager isn’t forced to buy or sell anything when an investor sells their shares.

Like we said, many investors use “ETF” and “index fund” interchangeably. That’s because most exchange-traded funds are index funds—but not all. Some are actively managed.

As is the case with Fidelity index funds, Fidelity ETFs tend to have some of the lowest costs in the business.

Related: The 9 Best ETFs for Beginners


Why Fidelity?

Fidelity is a leader in index funds, active mutual funds and exchange traded funds (ETFs). Today, this premier mutual fund company has more than $4.9 trillion in assets under management.

Fidelity has adapted with the times. The company rose to fame on the backs of its star active managers, such as Peter Lynch, the long-time manager of the Fidelity Magellan Fund (FMAGX) who averaged an incredible 29.2% per year between 1977 and 1990. But over the past three decades, Fidelity has evolved into a leader in low-cost index funds and even broke new ground by offering zero-fee index funds via its Fidelity ZERO line.

Apart from its mutual fund management business, Fidelity also operates one of the biggest brokerage houses in the United States. It’s also the largest record keeper of 401(k) plans, and one of the largest providers of 403(b) plans for nonprofit organizations. Fidelity provides more than 25,000 companies with defined-contribution and defined-benefit plans.

Today, we’re going to take a look at the very best Fidelity index funds for beginners. They run the gamut in terms of styles and strategies, but all of the best Fidelity index funds share one thing in common: They’re extremely cost-efficient ways for investors to quickly diversify.

Related: Best Investment Apps for Beginners

The 7 Best Fidelity Index Funds for Beginners (2024)

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It’s not exactly easy to narrow down this universe to just seven of the very best Fidelity index funds. Nor is this list a comprehensive portfolio. But for the beginning investor, this particular mix of Fidelity index funds covers the major bases, giving you exposure to U.S. stocks, developed and emerging markets, and government and corporate bonds—everything you need to construct a basic starter portfolio.

So without further ado, let’s look at the funds.

Best Broad Index Fund: Fidelity 500 Index Fund (FXAIX)

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  • Type: Mutual fund
  • Assets under management: $512.4 billion
  • Expense ratio: 0.015%, or $15¢ per year for every $1,000 invested
  • Dividend yield: 1.4%
  • Minimum initial investment: None

As a long-term wealth builder, it’s really hard to beat the S&P 500. And for a beginning investor, an investment in a simple S&P 500 Index fund like the Fidelity 500 Index Fund (FXAIX) is one of the absolute smartest moves you can make.

If you believe in the American growth story, then buying a basket of America’s biggest and most recognized companies only makes sense. Even Warren Buffett himself—considered by many to be the greatest investor in history—has said on multiple occasions that most investors, most of the time, should simply invest in an S&P 500 index fund and let it run.

The Fidelity 500 Index Fund has an almost nonexistent expense ratio of just 0.015%, which is just about impossible to beat. That has helped it draw an incredible $512 billion in assets under management.

Turnover in S&P 500 index funds tend to be low at just a couple percent in any given year. That makes them an extraordinarily tax-efficient way to invest. So, if you find yourself with limited IRA or 401k funds available to invest, it makes sense to allocate your taxable dollars to a fund like FXAIX.

Learn more about FXAIX at the Fidelity provider site.

Related: 11 Best Stock Trading Apps for Beginners

Best Large-Cap Fund: Fidelity ZERO Large Cap Index Fund (FNILX)

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  • Type: Mutual fund
  • Assets under management: $8.8 billion
  • Expense ratio: None
  • Dividend yield: 1.3%
  • Minimum initial investment: None

Fidelity is the first mutual fund company to take the concept of low fees all the way to no fees.

The Fidelity ZERO Large Cap Index Fund (FNILX) offers investors the universe of large-cap American stocks with an expense ratio of 0%. Zilch. Nada. Nothing.

This index fund tracks the Fidelity U.S. Large Cap Index, is designed to reflect the performance of the largest 500 U.S. companies based on float-adjusted market capitalization. In short, the larger the company (based on its publicly available shares), the more assets FNILX dedicates to holding it. To further keep costs down, the fund uses statistical sampling to replicate the returns of the index.

Note that while Fidelity U.S. Large Cap Index is very similar to the S&P 500, it’s not exactly the same. So over time, its performance might be better or worse than a comparable S&P 500 index fund. But if you value low expenses, it’s hard to argue with free.

Also, note that there is one condition to the zero fees in the ZERO line of funds: They’re only available in Fidelity brokerage accounts. That might not be a problem, as Fidelity brokerage accounts are generally well regarded and competitive with the other major online brokers. But if you do not already have a Fidelity account, you’d need to open one.

If you can’t access FNILX, FXAIX, which I mentioned above, is a fantastic, dirt-cheap option.

Learn more about FNILX at the Fidelity provider site.

Related: 8 Best Stock Portfolio Tracking Apps [Stock Portfolio Trackers]

Best Total Market Fund: Fidelity Zero Total Market Index Fund (FZROX)

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  • Type: Mutual fund
  • Assets under management: $19.8 billion
  • Expense ratio: None
  • Dividend yield: 1.3%
  • Minimum initial investment: None

While indexes like those FXAIX and FNILX track primarily focus on holding large-cap stocks, a total stock market index provides investors with one-stop access to large, medium, and even small companies.

Enter the Fidelity Zero Total Market Index Fund (FZROX), which offers broad exposure to the entire universe of U.S. stocks and does so while offering zero expenses and zero investment minimums.

This index fund tracks the Fidelity U.S. Total Investable Market Index, which is a float-adjusted market cap-weighted index designed to reflect the performance of the full U.S. equity market (in other words, large-, mid-, and small-cap stocks). To keep costs down, the fund will use statistical sampling techniques to replicate the returns of the index without necessarily having to own every underlying stock. Still, currently, the portfolio is more than 2,650 stocks strong.

If you’re looking to invest in “the market,” FZROX is a strong option. The fund holds virtually every public U.S. company you’ve ever heard of—and likely thousands you haven’t.

If you don’t have a Fidelity brokerage account, the Fidelity Total Market Index Fund (FSKAX) charges a thin 0.015% in annual expenses and also has zero minimum initial investment.

Learn more about FZROX at the Fidelity provider site.

Make sure you sign up for The Weekend Tea, WealthUp’s free weekly newsletter that over 10k monthly readers use to level up their money know-how.

Related: 15 Best Stock Market Investing Research & Analysis Sites

Best International Fund: Fidelity ZERO International Index Fund (FZILX)

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  • Type: Mutual fund
  • Assets under management: $4.0 billion
  • Expense ratio: None
  • Dividend yield: 2.9%
  • Minimum initial investment: None

The United States is the world’s premier idea factory and the engine that makes the global economy go. But America isn’t exactly the only game in town. There are hundreds or even thousands of quality companies in developed markets (established, slower-growing) and emerging markets (less stable but faster-growing) outside America’s shores. And while U.S. stocks have bested their peers over the past decade, there are long stretches when foreign stocks outperform, such as the 2000-08 period most recently.

If you are an American investor, it makes sense to keep the bulk of your investments in U.S. stocks. But it also makes sense to diversify and have 10% or more of your assets in non-U.S. stocks.

If you are looking for exposure to developed and emerging markets, the Fidelity ZERO International Index Fund (FZILX) is a solid option. Like its sisters in the Fidelity ZERO funds family, the fund offers zero expenses and no minimum investment. The fund tracks the Fidelity Global ex U.S. Index, a float-adjusted market capitalization-weighted index designed to reflect the performance of non-U.S. large- and mid-cap stocks.

If you don’t have a Fidelity brokerage account, the Fidelity International Index Fund (FSPSX) charges just 0.035% in annual fees and has no minimum to invest.

Learn more about FZILX at the Fidelity provider site.

Related: 11 Best Commission-Free Stock Trading Apps & Platforms

Best Sector Fund: Fidelity Real Estate Index Fund (FSRNX)

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  • Type: Mutual fund
  • Assets under management: $2.4 billion
  • Expense ratio: 0.07%, or 70¢ per year for every $1,000 invested
  • Dividend yield: 3.1%
  • Minimum initial investment: None

Real estate is one of the world’s oldest asset classes and a preferred store of value for the world’s wealthy since the dawn of civilization. Having a portion of your assets dedicated to real estate investments only makes sense, and Fidelity makes it easy via the Fidelity Real Estate Index Fund (FSRNX).

This Fidelity index fund tracks the performance of the MSCI US IMI Real Estate 25/25 Index. This is a collection of real estate investment trusts (REITs)—a special class of company that owns and sometimes operates real estate, and enjoys special tax considerations in exchange for distributing at least 90% of their taxable income to shareholders as dividends—with certain diversification limits in place. In short, no holding can exceed 25% of the index’s assets, and all holdings that are weighted above 5% cannot collectively exceed 25% of the index’s assets. This keeps the index diversified and prevents it from being concentrated in a small number of mega-cap REITs.

Real estate has traditionally been a good inflation hedge, as many commercial leases have automatic rent increases tied to inflation. So, if inflation lasts longer than we hope or expect, having a little money in real estate will likely pay off nicely.

If you prefer the convenience and liquidity of an ETF, Fidelity offers the Fidelity MSCI Real Estate ETF (FREL). FREL tracks a different index, but one that still holds REITs, and it charges a skinflint 0.084% in annual expenses.

Learn more about FSRNX at the Fidelity provider site.

Related: 9 Best Real Estate Crowdfunding Sites + Platforms


Best ESG Fund: Fidelity U.S. Sustainability Index Fund (FITLX)

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  • Type: Mutual fund
  • Assets under management: $3.7 billion
  • Expense ratio: 0.11%, or $1.10 per year for every $1,000 invested
  • Dividend yield: 1.0%
  • Minimum initial investment: None

Many investors—including younger investors—believe passionately in ethical investing. They want to do well by doing good, allocating their capital to companies that meet their environmental, social and governance (ESG) standards.

Every investor’s definition of “ethical” will be a little different, so no mutual fund will ever be perfect. But if you’re looking for a single solution that should get you close, the Fidelity U.S. Sustainability Index Fund (FITLX) is a good option.

This Fidelity fund tracks the performance of the MSCI USA ESG Index, which represents the performance of stocks of large- to mid-cap U.S. companies with high environmental, social, and governance performance relative to their sector peers, as rated by MSCI ESG Research. As a practical matter, this means excluding companies in the tobacco, firearms, adult entertainment industries as well as many energy companies deemed to be heavy polluters. FITLX will also exclude companies with a history of bad labor relations or poor corporate governance.

If you prefer the convenience and added liquidity of an ETF, the Fidelity Sustainability U.S. Equity ETF (FSST) offers a similar ESG strategy. However, unlike FITLX, FSST is actively managed and not an index fund, and it charges a much higher 0.59% in annual expenses.

Learn more about FITLX at the Fidelity provider site.

Related: 15 Best High-Yield Investments [Safe Options Right Now]

Best Bond Fund: Fidelity Short-Term Bond Index Fund (FNSOX)

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  • Type: Mutual fund
  • Assets under management: $2.4 billion
  • Expense ratio: 0.03%, or 30¢ per year for every $1,000 invested
  • SEC yield: 5.0%*
  • Minimum initial investment: None

As 2022 taught us, no one should have 100% of their investable capital in stocks. Stocks can be wildly volatile. Having a portion of your capital in safe short-term bonds can lower your overall portfolio volatility.

With interest rates at historical lows for most of the past decade, an investment in short-term bonds was effectively dead money. But that’s not at all the case anymore. The Fidelity Short-Term Bond Index Fund (FNSOX) offers an attractive yield of 5.0% with only minimal capital risk.

This Fidelity index fund tracks the performance of the Bloomberg U.S. 1-5 Year Government/Credit Bond Index, a market value-weighted index of fixed-rate investment-grade debt securities with maturities from one to five years from the U.S. Treasury, U.S. Government-Related, and U.S. Corporate Indexes. In short, these bonds mature in a relatively short amount of time, meaning interest-rate increases and decreases will have less effect on their value than longer-dated bonds. Also, bond rating agencies have determined that investors have a high chance of receiving their money back from these bonds, hence “investment-grade.”

One bond-fund metric to look at is duration, which is a measurement of risk. FNSOX currently has a duration of just 2.5 years, which implies that if interest rates grew by 1 percentage point, the fund should suffer modest short-term capital losses of about 2.5%. (And vice versa: A 1-point hike should mean a gain of about 2.5%.)

If you’re looking for a safe place to stash some cash, this is it.

* An SEC yield reflects the interest earned across the most recent 30-day period. This is a standard measure for funds holding bonds and preferred stocks.

Learn more about FSNOX at the Fidelity provider site.

Make sure you sign up for The Weekend Tea, WealthUp’s free weekly newsletter that over 10k monthly readers use to level up their money know-how.

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FAQs About Fidelity Index Funds

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What are Fidelity Zero Funds?

Fidelity ZERO Funds are a line of zero-minimum, zero-expense index funds launched by Fidelity in 2018. Currently, there are four Fidelity ZERO funds:

  • Fidelity Zero International Index Fund (FZILX)
  • Fidelity Zero Total Market Index Fund (FZROX)
  • Fidelity Zero Extended Market Index (FZIPX)
  • Fidelity Zero Large Cap Index Fund (FNILX)

The ZERO funds are true to their name: Investors literally pay nothing in management fees. But there are conditions. The Fidelity ZERO funds are only available in Fidelity brokerage accounts. That might not be a problem, as Fidelity brokerage accounts are generally well regarded and competitive with the other major online brokers. But if you do not already have a Fidelity account, you’d need to open one.

Fidelity ZERO Funds are, strictly speaking, index funds. But they are based on customized indexes that Fidelity has created in-house. The typical large-cap index fund tracks the S&P 500 or another recognized index, but they have to pay licensing fees to the index creator. Fidelity avoids the licensing fees by creating their own indexes, which allows them to pay the savings on in the form of zero fees.

The Fidelity indexes tend to be very similar to popular indexes such as the S&P 500, but they are not the same. So, if tracking a specific index is a priority for you, you should take that under advisement.


Why does a fund’s expense ratio matter so much?

Every dollar you pay in expenses is a dollar that comes directly out of your returns. So, it is absolutely in your best interests to keep your expense ratios to an absolute minimum.

The expense ratio is the percentage of your investment lost each year to management fees, trading expenses and other fund expenses. Because index funds are passively managed and don’t have large staffs of portfolio managers and analysts to pay, they tend to have some of the lowest expense ratios of all mutual funds.

This matters because every dollar not lost to expenses is a dollar that is available to grow and compound. And over an investing lifetime, even a half a percent can have a huge impact. If you invest just $1,000 in a fund generating 5% per year after fees, over a 30-year horizon, it will grow to $4,116. However, if you invested $1,000 in the same fund, but it had an additional 50 basis points in fees (so it only generated 4.5% per year in returns), it would grow to only $3,584 over the same period.

wealthup why expense ratios matter

What is the minimum investment amount on a Fidelity fund?

Every Fidelity fund has its own minimum investment amount specific to that fund. But Fidelity has been a trailblazer in making its funds available to beginning investors with ultra-low minimums, and many Fidelity funds have no minimum investment at all.

Part of our criteria in selecting the best Fidelity index funds was accessibility, and every fund selected here has a minimum investment of zero, meaning you can literally start your investment with any dollar amount.


Charles Lewis Sizemore, CFA is the Chief Investment Officer of Sizemore Capital Management LLC, a registered investment adviser based in Dallas, Texas, where he specializes in dividend-focused portfolios and in building tax-efficient alternative allocations with minimal correlation to the stock market. He is also a Portfolio Manager of the Blue Orbit Capital Fund I, LP and the Blue Orbit Multi-Strategy Fund, LP.

Charles is a frequent guest on CNBC, Bloomberg TV, and Fox Business News, has been quoted in Barron’s, The Wall Street Journal, and The Washington Post, and is a frequent contributor to Forbes, GuruFocus, MarketWatch, and InvestorPlace.com.

He holds a master’s degree in Finance and Accounting from the London School of Economics in the United Kingdom and a Bachelor of Business Administration in Finance with an International Emphasis from Texas Christian University in Fort Worth, Texas, where he graduated Magna Cum Laude and as a Phi Beta Kappa scholar. Charles is a CFA Charterholder in good standing.

Charles lives with his wife Maria Jose, his sons Charles and Ian, and his daughter Gabriela and enjoys regularly traveling to his wife’s native Peru.