GIPHY / istock / getty

What Is an Index Fund?

Index funds hold a unique place in the market as “baskets” that contain most or all of the securities in a specified index.

Index funds, explained

Investment funds are financial funds that pool capital from many investors into a single pot, so to speak. The purpose of an investment fund is to allow each person to hold a stake in a given set of securities, rather than purchasing the individual securities in the fund on their own.

This method of investing makes the practice of buying into a large number of securities affordable for individuals who are wary – or financially unable – to venture out on their own. Many times, such funds come in low-risk packages compared to the market at large, as many funds track positive returns in the long-term. This makes funds even more attractive to the average investor. (Note that this doesn’t mean every fund is low-risk or generates returns – it’s important to do your homework if you’re looking to invest in any security). 

Index funds are not their own type of fund, but they are integral to understanding many mutual funds and ETFs. Many index funds track the performance of the S&P 500 Index. This means that these funds use the S&P 500 as an “underlying index” to determine which securities the fund should buy and in what amounts. 

This approach makes it easy and affordable for individual investors to purchase shares of hundreds or even thousands of companies without hand-picking each security. Furthermore, index funds are a good way to buy a representative sample of an index without spending the exorbitant amount of money required to buy one share of every stock within an index. 

Warren Buffet himself, among many other famous investors, recommends index funds on this very basis. He has stated that it makes more sense to purchase a slice of a fund holding every security, rather than a slice of every security within an index. 

What this means for you

As a result of their basic makeup, index funds are some of the most diversified, potentially low-risk investment vehicles available. 

By not limiting their scope to a few companies or a single asset class, investors can bet on long-term market trends. These are more profitable in the long run than most handpicked portfolios.

Disclosures is the trade name of Quantalytics Holdings, LLC., LLC is a wholly-owned subsidiary of Quantalytics Holdings, LLC ("Quantalytics"). Quantalytics offers automated financial advice tools through Quantalytics Investment Advisors, LLC ("QAI"), an SEC-registered investment advisor. QIA’s investment advisory services are ONLY available only to residents of the United States. Disclosures concerning QIA’s investment advisory services are available on its Form ADV filed with the SEC. The content in this newsletter is for informational purposes only and does not constitute a comprehensive description of's investment advisory services.

Hands-free approach to investing

Our AI manages your money with commission-free, institutional-grade, AI-powered investment kits.