What Are Index Funds?

China iTech Ghana
Tuesday, September 28, 2021 | views Last Updated 2021-09-28T18:41:27Z

 Index funds are passively managed mutual funds that try to duplicate the performance of a financial index, like the S&P 500 or the Dow Jones Industrial Average. Index funds are a great way to simplify investing while also reducing your costs. You can buy index funds through your 401(k) or individual retirement account (IRA), or also via an online brokerage account. Read on to learn what an index fund is and whether they’re a good fit for your portfolio.

What Is an Index and Why Do They Matter for Index Funds?

An index measures the performance of a large group of assets of a similar type, such as stocks, bonds, currencies or commodities. Indexes factor together the prices of a wide range of assets, helping people more easily track their market performance as a group.

For example, the S&P 500 is an equity index that consolidates the stock prices of 500 of the largest publicly traded U.S. companies. The S&P 500 makes it easy to understand whether the leading U.S. stocks are gaining or declining in value. Other stock market indexes include the Nasdaq Composite and the Russell 2000.

There are indexes for nearly every asset class and almost every sector of the economy. They track the performance of large-cap or small-cap stocks, investment-grade or junk bonds, and every kind of commodity. Indexes track foreign currencies and international companies. The list goes on and on.

Index fund managers build asset portfolios that attempt to earn the same returns of a chosen index. For example, an index fund that targets the S&P 500 would buy the stocks that comprise the index and attempt to match the overall performance of the S&P 500.

How Do Index Funds Work?

As noted above, index funds are a type of mutual fund. Like all mutual funds, when you buy shares in an index fund you’re pooling your money with other investors. With an index fund, the pool of money is used to purchase a portfolio of assets that duplicate the performance of a target index. Dividends, interest and capital gains are paid out to investors regularly.

The fund manager adjusts the share of the assets in their portfolio to match the index. By doing so, the return on the fund should match the performance of the target index, before accounting for fund expenses.

Why Index Weighting Matters for Index Funds

Indexes use different weighting strategies to track their underlying assets, and the choice can have a big impact on how an index fund performs. A price-weighted index takes into account each asset’s market price: Higher-priced assets have a bigger share in the index than lower-priced assets. The Dow Jones Industrial Average (DJIA) is a price-weighted index: The price per share of each company tracked by the DJIA determines its weighting in the index.

Meanwhile, a market-cap weighted index considers each asset’s market capitalization—the total money invested in the asset, or the so-called market cap—to determine its share in the index. The S&P 500 is a market-cap weighted index: Each component company’s market capitalization determines its weighting in the index.

Why does this matter? A fund that tracks a price-weighted index needs to adjust its portfolio holdings more frequently, as market prices fluctuate, to keep up with its target index. With a market-cap weighting, there is less need for buying and selling to keep the fund aligned with its target. However, large-cap assets can have an outsized impact on the performance of both the index and any fund based on it.

An equal-weight index gives the same weighting in its calculation to each asset it tracks, independent of its price or market cap, large or small. For an index fund, that means no single holding has an outsized impact—positive or negative—on performance.

Index Funds Are Passive Investments

Index funds are passively managed investments. There is debate over the virtues of actively managed mutual funds vs passive index funds, but there’s a strong case to be made that passively managed index funds are less expensive and may have better returns over the long term.

Managers of actively managed mutual funds attempt to outperform a benchmark index. For example, an actively managed fund that measures its performance against the S&P 500 would try to exceed the annual returns of that index via various trading strategies. This approach requires more involvement by managers and more frequent trading—and therefore higher potential costs.

Passive management doesn’t try to identify winning investments. Instead, managers of an index fund merely attempt to duplicate the performance of their target index. This strategy requires fewer managerial resources and less trading, which means index funds usually charge lower fees than actively managed mutual funds.

Advantages of Index Funds

  • Low fees. Index funds charge lower fees than actively managed mutual funds. Fund managers merely track an underlying index, which requires less effort and fewer trades than attempting to actively beat a benchmark index.

  • Easy diversification. When you buy shares of a single index fund, you gain access to an investment portfolio made up of a very large basket of securities. The time and expense to build and maintain a similar portfolio yourself would likely be prohibitive.

  • Long-term growth potential. Over the past 90 years, the S&P 500 has earned an average return of nearly 10% per year. That’s one of the highest returns of any investment and one that even professional investors struggle to beat. By buying into a S&P 500 or other equity index fund, your investments are set to grow for the long term.

Disadvantages of Index Funds

  • Average annual returns. Index funds may provide a high degree of diversification, but this also means they deliver only average annual returns. Index funds can dilute the possibility of big gains as they are driven by the combined results of a very large basket of assets.

  • Little chance for big short-term gains. As passive investing vehicles, there’s little scope for capturing big short-term gains with index funds. While this is more of a feature of index funds, not a bug, investors seeking sizable short-term gains should not expect them from index funds.

Enter Your Email Address to Recieve Our Latest Updates:

Delivered by

comments that appear entirely the responsibility of commentators as regulated by the ITE Law
  • What Are Index Funds?

Trending Now