Even if you’re new to investing, you’ve likely heard of the S&P 500 index. In a nutshell, the S&P 500 is considered to be a good benchmark for the general health of the U.S. stock market.
The index measures the stocks of 500 of the largest publicly traded U.S. companies ranging from Microsoft to Apple. (Large-cap companies typically range from $10 billion to $200 billion and include the kind of industry titans you would expect to see on a major stock-market index.)
But—and this is an important but—you can’t actually invest in the S&P 500. You can, however, invest in an S&P 500 index fund that mirrors the S&P 500. Here we explain the S&P 500, which companies are included in it (and why), and how investing in it can be a solid financial strategy.
Which companies are included in the S&P 500?
A little background on the S&P 500: It was created in 1957 by financial companies Standard and Poor’s, and the index is now owned by the S&P Dow Jones Indices, a joint venture between S&P Financial (formerly known as McGraw Hill Financial), global markets company CME Group and media company News Corp., which owns Dow Jones.
The S&P 500 tracks large-cap companies across the major industry sectors, from information technology to real estate. As of Dec. 31, 2019, the index was comprised of: information technology (23.2 percent), health care (14.2 percent), financials (13 percent), communication services (10.4 percent), consumer discretionary (9.8 percent), industrials (9.1percent), consumer staples (7.2 percent), energy (4.3 percent), utilities (3.3 percent), real estate (2.9 percent) and materials (2.7 percent).
A fun fact is that even though it’s called the S&P “500,” there are actually actually 505 listed stocks because a change in methodology led to more companies having multiple listings in the index due to multiple share classes. For example, Google’s parent company Alphabet has Class A (common stock) and Class C shares. (Class C shareholders have no voting rights.)
The Top 10 companies in the S&P 500 by index weight (as of Dec. 31, 2019) are:
- Apple Inc.
- Microsoft Corp.
- Amazon.com Inc.
- Facebook Inc. A
- Berkshire Hathaway B
- JP Morgan Chase & Co.
- Alphabet Inc. A (Google)
- Alphabet Inc. C (Google)
- Johnson & Johnson
- Visa Inc. A.
What’s the criteria for a company to be included in the S&P 500?
The makeup of the S&P 500 morphs based on the companies featured in the index’s available shares and stock prices. The S&P Dow Jones Indices committee determines a corporation’s eligibility based on size, industry and liquidity. As of early 2020, other factors in consideration for inclusion in the S&P 500 are:
- Only common stock (or shares) of U.S. companies are considered;
- At least 50 percent of the company’s stock has to be available to the public (and the U.S. portion of fixed assets and revenues has to be available to the public);
- The U.S. portion of fixed assets and revenues needs to constitute at least 50 percent;
- The market cap must be at least $8.2 billion;
- The company must have positive earnings in four consecutive quarters, including the most recent quarter;
It’s important to note that the S&P 500 is a market-cap-weighted stock market index. (Market capitalization or “market cap” is determined by multiplying the total number of a company's outstanding shares by the current market price of one share.)
That means it’s weighted relative to each company’s market capitalization. The index assigns each company’s weight based on the value of all of the shares of stock available. So, the larger companies in the S&P 500 (think Google and Amazon) have a greater impact on the index’s price performance than a company with a comparatively smaller market cap.
So, how can I invest in the S&P 500?
As mentioned earlier, you can’t actually invest in the S&P 500 itself. But you can invest in an index fund that mimics the performance of the S&P 500. Instead of purchasing 500+ separate stocks (which are ever-changing anyhow), it’s an opportunity to invest in a single fund.
Another way to track an index like the S&P 500 is by investing in an exchange-traded fund (or ETF). An ETF is a low-cost, tax-efficient fund that allows an investor to stay diversified while investing in the stock market. They’re traded on stock exchanges and can be bought and sold like stocks.
Acorns portfolios, for example, include ETFs that provide exposure to thousands of stocks and bonds, including one that mirrors the S&P 500. (Find out more.) The Vanguard S&P 500 ETF (also known as VOO), is included in four of five Acorns portfolios. It’s one of the largest funds on the market.
Other popular and low-cost S&P 500 index funds and ETFs include SPDR S&P 500 ETF Trust, iShares Core S&P 500 ETF and Schwab S&P 500 Index Fund, according to Bankrate. You can also invest in S&P funds through your company’s 401(K) and Individual Retirement Accounts (IRAs). (Acorns also offers IRAs. Learn more.)
Does investing in an S&P 500 fund make sense for me?
Large-cap companies—the kind that are included in the S&P 500—are typically considered more stable (read: less risky) investments and have a tendency to increase in share value. But index funds don’t typically see huge gains in a short period of time: Picture large-cap companies as cars in a train chugging steadily along a track rather than race cars careening around a speedway.
One of the biggest reasons for S&P 500 funds’ popularity is their inherent diversification based on the wide range across a variety of industries. The nature of the stock market is unpredictable, but experts often recommend investing in index funds that track broad market benchmarks, like the S&P 500.
In fact, Warren Buffett is a big believer in the value of the S&P 500. The famed investor has even instructed the trustee of his estate to invest 90 percent of his money into an S&P 500 index fund. “Consistently buy an S&P 500 low-cost index fund,” he told CNBC’s On The Money, especially when it comes to boosting retirement savings. “I think it’s the thing that makes the most sense practically all of the time.”
Of course, there are risks in any kind of investment you make. Consider your goals, time horizon and tolerance for risk when making your decision about whether investing in an S&P 500 index fund is right for you.
Investing involves risk including loss of principal. This article contains the current opinions of the author, but not necessarily those of Acorns. Such opinions are subject to change without notice. This article has been distributed for educational purposes only and should not be considered as investment advice or a recommendation of any particular security, strategy or investment product. Information contained herein has been obtained from sources believed to be reliable, but not guaranteed.