What is an Index Fund? Index Funds Explained for New Investors (2024)

By David Carlson / Last updated: / Investing, Personal Finance

We may receive compensation from companies mentioned within this post via affiliate links. Read our full advertiser disclosure. Opinions, reviews, analyses & recommendations are the author’s alone, and have not been reviewed, endorsed or approved by any of these entities.

273 Shares


What is an Index Fund? Index Funds Explained for New Investors (1)In August, for the first time ever, there was more money in passive index funds than in actively managed funds.

I think this is a good trend, as I practically beg new investors to keep it simple.

The easiest way to keep it simple is by not investing in individual stocks. There are also way too many investors getting ripped off by the high fees that come with actively managed funds, a majority of which do not outperform a passive index over the long-term.

To new investors this jargon can be confusing.

I was telling a friend recently about index funds, and I got a blank stare. He jokingly said, “index cards? Is that what you are talking about?”

Investing can be intimidating because of how some people over-complicate it. If you watch “Made Money” you would think stock picking is something everyone should be doing. In reality, most investors – and certainly new investors – would benefit from focusing on low-cost index funds that track the broad stock market.

Let’s start by answering the question: what is an index fund?

Index Funds Explained


Index funds are mutual funds or Exchange-Traded Funds (ETFs) set up to track the performance of a benchmark index, such as the S&P 500. Said differently, they move up or down in price based on a large basket of stocks. This is beneficial because you spread your exposure across many companies. Compare that to investing in only a handful of individual companies. If one of those companies failed and went bankrupt, a large portion of your investment portfolio would be wiped out. With an index fund exposure is spread out across many, many companies, reducing your exposure and risk related to any one company.

Many index funds are capitalization weighted, or cap-weighted, which means that the larger components are given a larger weighting. For example, if you look at the Fidelity total stock market index fund you will see that the top holdings are, among other large companies, Microsoft, Apple, Amazon, and Facebook. The reason they make up a higher percentage than say, a small company whose market capitalization is only $10 million, is because having the same exposure to Apple as a $10 million company would give too much exposure to the small company.

Index funds are passively managed, meaning there is not a fund manager trying to “beat the market.” This allows the funds to have low fees, sometimes as low as 0.00% (for example, Fidelity’s total stock market index fund FZROX). The problem with actively managed funds is that they not only have to beat a benchmark index, but they also have to beat the index plus the fee they charge, which can be as much as 2% or more.

Here are a few examples of index funds. Notice the low fees charged.

  • Fidelity ZERO Total Market Index Fund (FZROX)

    Objective (from the Fidelity website): The fund seeks to provide investment results that correspond to the total return of a broad range of U.S. stocks.

    ETF or Mutual Fund: Mutual Fund

    Expense Ratio (Fees): 0.00%

    Minimum Investment: $0

  • Vanguard Total Stock Market Index Fund Admiral Shares (VTSAX)

    Objective (from the Vanguard website): Designed to provide investors with exposure to the entire U.S. equity market, including small-, mid-, and large-cap growth and value stocks..

    ETF or Mutual Fund: Mutual Fund

    Expense Ratio (Fees): 0.04%

    Minimum Investment: $3,000

  • Vanguard Total Stock Market ETF (VTI)

    Objective (from the Vanguard website): Vanguard Total Stock Market ETF is an exchange-traded share class of Vanguard Total Stock Market Index Fund, which employs an indexing investment approach designed to track the performance of the CRSP US Total Market Index, which represents approximately 100% of the investable U.S. stock market and includes large-, mid-, small-, and micro-cap stocks regularly traded on the New York Stock Exchange and Nasdaq.

    ETF or Mutual Fund: Mutual Fund

    Expense Ratio (Fees): 0.03%

    Minimum Investment: Cost of 1 Share is approximately $150


You can find a lot of index fund options at both Vanguard and Fidelity. Vanguard has made a name for itself in the low-fee index fund space, and many investors use them. Fidelity has recently rolled out more options for index fund investing as well.

Resources and Tools for New Investors


To invest you need positive cash flow that can be diverted to index funds. I wrote a post outlining 5 ways to find cash to invest in the stock market that may be helpful if one of your goals is to invest more.

I also created a spreadsheet you can use to quickly and easily analyze your 401k or 403b investment options. You can grab a free copy here.

Bottom line on index funds: Index funds offer investors the benefit of low fees and lower risk due to broad exposure to the market.

Check out some of our favorite personal finance resources:

Are you getting the best credit card rewards? Check out the top cash back credit card offers (updated daily)

Make extra money:15 ways to make money from your computer

  • Get our FREE Automated Budget Spreadsheet and our Student Loan Spreadsheet

Get the First Chapter Free!

What is an Index Fund? Index Funds Explained for New Investors (2)

Join our online community and get the first chapter of the book Student Loan Solution absolutely FREE!

273 Shares

What is an Index Fund? Index Funds Explained for New Investors (2024)

FAQs

What is an Index Fund? Index Funds Explained for New Investors? ›

Index funds are investment funds that follow a benchmark index, such as the S&P 500 or the Nasdaq 100. When you put money in an index fund, that cash is then used to invest in all the companies that make up the particular index, which gives you a more diverse portfolio than if you were buying individual stocks.

What are index funds for beginners? ›

An index fund is a group of stocks that aims to mirror the performance of an existing stock market index, such as the Standard & Poor's 500 index. An index is made up of companies that represent a part of the financial market and offers a look into the health of the economy as a whole.

Are index funds good for new investors? ›

Index funds are popular with investors because they promise ownership of a wide variety of stocks, greater diversification and lower risk – usually all at a low cost. That's why many investors, especially beginners, find index funds to be superior investments to individual stocks.

What does it mean if someone invests in a stock index fund? ›

Index funds involve passive investing, using a long-term strategy without actively picking securities or timing the market. Index funds should match the risk and return of the market based on the theory that, in the long term, the market will outperform any single investment.

What are 2 cons to investing in index funds? ›

The benefits of index investing include low cost, requires little financial knowledge, convenience, and provides diversification. Disadvantages include the lack of downside protection, no choice in index composition, and it cannot beat the market (by definition).

How do beginners buy index funds? ›

How can I directly invest in index funds? You can directly invest in index funds by opening and funding a brokerage account. All brokers allow you to directly buy shares of ETFs on the open market, and most allow you to directly invest in mutual funds if you prefer to use those.

How do you actually make money from index funds? ›

As with other mutual funds, when you buy shares in an index fund you're pooling your money with other investors. The pool of money is used to purchase a portfolio of assets that duplicates the performance of the target index. Dividends, interest and capital gains are paid out to investors regularly.

What is a disadvantage to investing in index funds? ›

Lack of Downside Protection

Investing in an index fund, such as one that tracks the S&P 500, will give you the upside when the market is doing well, but also leaves you completely vulnerable to the downside.

Do index funds double your money? ›

According to Standard and Poor's, the average annualized return of the S&P index, which later became the S&P 500, from 1926 to 2020 was 10%. 1 At 10%, you could double your initial investment every seven years (72 divided by 10).

Should I buy stocks or index funds? ›

However, like all speculative assets, you should make sure that individual stocks only make up the speculative part of your portfolio. Invest in these assets with money you can afford to lose. For the long-term, stable segment of your portfolio, index funds are often an excellent idea.

Why does Warren Buffett like index funds? ›

Buffett not only sees index funds as the simplest path to achieve a diversified portfolio, but they're also the cheapest.

Do you actually own stock in an index fund? ›

Investing in individual stock gives you partial ownership of a company. Index investing also gives you partial ownership in companies, but you'll have to look up the fund's portfolio to learn what you own (and in what proportion to your total ETF position).

Do index funds pay dividends? ›

Are there dividend-paying index funds? Yes, there are several dividend-paying index funds for investors who prioritize steady income over high growth.

Do billionaires invest in index funds? ›

In fact, a number of billionaire investors count S&P 500 index funds among their top holdings. Among those are Buffett's Berkshire Hathaway, Dalio's Bridgewater, and Griffin's Citadel.

Why doesn't everyone just invest in the S&P 500? ›

That's because your investment gives you access to the broad stock market. Meanwhile, if you only invest in S&P 500 ETFs, you won't beat the broad market. Rather, you can expect your portfolio's performance to be in line with that of the broad market. But that's not necessarily a bad thing.

Are index funds safe during a recession? ›

The important thing to remember about index funds is that they should be long-term holds. This means that a short-term recession should not affect your investments.

Do you get paid from index funds? ›

Most index funds pay dividends to their shareholders. Since the index fund tracks a specific index in the market (like the S&P 500), the index fund will also contain a proportionate amount of investments in stocks. For index funds that distribute dividends, many pay them out quarterly or annually.

Do index funds pay you? ›

Dividend index funds can be mutual funds or exchange-traded funds (ETFs). Investors can select an index that includes multiple dividend-paying stocks. They generally provide steady income instead of high growth.

What are the pros and cons of index funds? ›

Index funds are a low-cost way to invest, provide better returns than most fund managers, and help investors to achieve their goals more consistently. On the other hand, many indexes put too much weight on large-cap stocks and lack the flexibility of managed funds.

Do you make money off of index funds? ›

Small chance of big short-term gain: As investment tools designed for tracking market indices, index funds have minimal potential for achieving substantial short-term gains. Investors aiming for notable short-term profits should temper their expectations when opting for this investment strategy.

Top Articles
Latest Posts
Article information

Author: Kimberely Baumbach CPA

Last Updated:

Views: 5737

Rating: 4 / 5 (61 voted)

Reviews: 92% of readers found this page helpful

Author information

Name: Kimberely Baumbach CPA

Birthday: 1996-01-14

Address: 8381 Boyce Course, Imeldachester, ND 74681

Phone: +3571286597580

Job: Product Banking Analyst

Hobby: Cosplaying, Inline skating, Amateur radio, Baton twirling, Mountaineering, Flying, Archery

Introduction: My name is Kimberely Baumbach CPA, I am a gorgeous, bright, charming, encouraging, zealous, lively, good person who loves writing and wants to share my knowledge and understanding with you.