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

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

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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.

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

FAQs

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

An index fund is a portfolio of stocks or bonds designed to mimic the composition and performance of a financial market index. Mutual funds and exchange-traded funds (ETFs) have many different varieties of low-cost index funds. They have lower expenses and fees than actively managed funds.

What is an index fund explanation? ›

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 is an index fund Quizlet? ›

An index fund is a type of mutual fund with a portfolio constructed to match or track the components of a market index, such as the S&P 500.

What is the best index fund for beginners? ›

For beginners, the vast array of index funds options can be overwhelming. We recommend Vanguard S&P 500 ETF (VOO) (minimum investment: $1; expense Ratio: 0.03%); Invesco QQQ ETF (QQQ) (minimum investment: NA; expense Ratio: 0.2%); and SPDR Dow Jones Industrial Average ETF Trust (DIA).

What is an index when it comes to investing? ›

But What Exactly. Is an Index? An index is a group or basket of securities, derivatives, or other financial instruments that represents and measures the performance of a specific market, asset class, market sector, or investment strategy.

Is index fund good for beginners? ›

Investing in index funds is a great way to diversify your portfolio and achieve long-term growth. Index funds are simple, cost-efficient, and transparent investments that can offer you the best return on your money.

Why do investors invest in index funds? ›

Why are index funds so popular with 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.

What is index fund and benefits? ›

2754 3 mins read. 06 Mar 2024. Index funds are passive mutual funds that replicate popular market indices. The Fund Manager does not actively select industries or stocks but invests in all index stocks to match their weightage. This passive approach aims to mirror the index's performance.

What is the goal of an index fund? ›

An "index fund" describes a type of mutual fund or unit investment trust (UIT) whose investment objective typically is to achieve approximately the same return as a particular market index, such as the S&P 500 Composite Stock Price Index, the Russell 2000 Index or the Wilshire 5000 Total Market Index.

How do you tell if a fund is an index fund? ›

The main difference is that index funds are passively managed, while most other mutual funds are actively managed, which changes the way they work and the amount of fees you'll pay.

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).

Is it OK to only invest in index funds? ›

Investing legend Warren Buffett has said that the average investor need only invest in a broad stock market index to be properly diversified. However, you can easily customize your fund mix if you want additional exposure to specific markets in your portfolio.

What is the minimum deposit for index funds? ›

Best Index Funds
Fund NameMinimum Investment10-Yr Avg. Annual Return
Fidelity 500 Index Fund (FXAIX)$012.69%
Vanguard Total Stock Market Index Fund Admiral (VTSAX)$3,00012.06%
Schwab S&P 500 Index Fund (SWPPX)$012.73%
6 more rows
Mar 7, 2024

How do index funds pay you? ›

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.

How does an index fund make money? ›

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.

Are index funds safe? ›

Index funds are generally considered safe because they don't rely too much on the performance of any individual stock, and they also don't rely on the competence of investment managers as actively managed mutual funds or hedge funds do.

How do you explain index funds to a child? ›

An index fund is like a basket that holds a bunch of different investments. These aren't hand-picked by some Wall Street hotshot; instead, they track a specific index, such as the Standard and Poor's 500 (S&P 500).

What are the pros and cons of 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).

What is the main advantage of index funds? ›

Benefits of investing in index funds

Since an index fund mimics its underlying benchmark, there is no need for an efficient team of research analysts to help fund managers pick the right stocks. Also, there is no active trading of stocks. All these factors lead to low managing cost of an index fund.

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