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People also ask
Which companies dominate the S&P 500 & spy stock?
What are the top stocks on the S&P 500 Index?
What's going on with the S&P 500?
What is the S&P 500 top 50?
- Overview
- Criteria for Inclusion in the S&P 500
- How the Index is Weighted
- Sectors and the S&P 500
- Top 25 S&P 500 Companies by Market Cap
- What Are the Top 10 Holdings in the S&P 500 Now?
- How Can You Buy the S&P 500?
- How Is It Determined Which Companies Are Included in the S&P 500?
- The Bottom Line
The Standard & Poor's (S&P) 500 is an index of 503 stocks representing the largest companies listed in the U.S., with some firms issuing multiple share classes.
Since its launch in 1957, the S&P 500 has been widely regarded as a strong barometer of the U.S. economy. Today, it is heavily weighted toward tech firms, with information technology companies comprising over 28% of the index. The next-largest sectors represented include healthcare and financials, at roughly 13% each.
S&P Global provides free access to the list of the top 10 holdings on its website. The company does not, however, provide access to the full list of constituents of the index except to subscribers of its research arm,
is one of the most popular indexes in the financial space, representing about 500 of the largest companies listed on U.S. stock exchanges.
To be included, companies must meet various criteria related to market capitalization, liquidity, and other metrics.
As a market-cap-weighted index, the S&P 500 provides companies with larger market caps a larger-percentage allocation.
The S&P 500 has been among the top stock market indexes since its founding. It includes many of the largest
in the country. To be included in the S&P 500, a company must meet criteria including the following:
of $12.7 billion or more
A positive sum of the most recent four consecutive quarters of prior earnings
Positive earnings in the most recent quarter
A float-adjusted liquidity ratio (FALR) of 0.75 or greater
, the S&P 500 provides companies with the largest market caps, the highest allocation within the index. Market cap, a representation of the total dollar market value of all outstanding
shares of a firm, is determined by multiplying the total number of company shares by the price of the company's stock.
Highly valuable shares of the largest companies contribute significantly to the overall return of the S&P 500. For this reason, the index is often heavily concentrated in a relatively small number of stocks. About three-quarters of the index is typically tied to a group of 75 or fewer stocks, with the remaining 425+ companies comprising a much smaller portion.
Though many firms in the S&P 500 are well-established, companies are periodically added to or removed from the index. The larger the company to be added or removed, the greater the impact on the performance of the broader index.
Below we look at the top
for the S&P 500, as well as their weightings, as of Aug. 31, 2023.
Different sectors have dramatically varied weights in the S&P 500, and like stocks, they too can have vastly disparate impacts on the performance of the overall index.
A low-weight sector like utilities may significantly outperform the broader market, but it might not be weighted heavily enough in the S&P 500 to help the index to outperform as well, particularly if heavily-weighted sectors are underperforming. On the other hand, if information technology as a sector is underperforming the market, even outperformance by several other sectors may still not lead the S&P 500 to similarly outperform.
S&P Global does not make available the exact weightings of the 25 largest components of its flagship index. Still, the
SPDR S&P 500 Trust ETF
(SPY) exchange-traded fund (EFT) makes a good proxy. SPY is the oldest ETF and one of the most widely traded. It has
of $404.4 billion as of Sep. 23, 202.
Although SPY tracks the S&P 500, its constituents may not be weighted exactly the same as the stocks making up the target index. As of Sep. 22, the largest holdings by weight for SPY are:
Alphabet Inc. Class A (
The top 10 holdings disclosed by the S&P 500 as of Aug. 31, 2023 are:
Alphabet Inc. Class A (
Alphabet Inc. Class C (
), formerly Facebook, Class A
As an index, it is not possible to buy the S&P 500 directly. However, several popular ETFs, including the oldest such fund, the SPDR S&P 500 Trust (SPY), track the index and are excellent proxies.
Currently, the S&P 500 has 503 constituents, the result of some companies having multiple
listed in the index simultaneously. For inclusion in the S&P 500, a company must meet a variety of liquidity, market capitalization, and related metrics. Each quarter, the S&P 500 is rebalanced according to a free-float, market-cap-weighting strategy. Those companies with the highest market values receive the largest allocation.
If you're looking to target many of the best-known and largest companies in existence, the S&P 500 is a helpful reference point. The top stocks on the index include massive tech firms like Apple, Microsoft, and Alphabet. It's not possible to invest in the index directly, but you can buy individual shares of companies included in the index or purchase shares of a fund targeting the S&P 500.
The comments, opinions, and analyses expressed on Investopedia are for informational purposes only. Read our
- 12.5%
- 28.2%
- 13.2%
- Weighting in the S&P 500
Nov 9, 2023 · Eight S&P 500 stocks, including consumer discretionary Expedia Group ( EXPE ), industrial Generac Holdings ( GNRC) and tech play Gartner ( IT ), rallied 20% or more in the market's...
Aug 6, 2020 · The so-called Mega-Cap S&P 500 technology companies, Apple ( AAPL ), Microsoft ( MSFT ), Amazon.com ( AMZN ), Alphabet ( GOOGL) and Facebook ( FB ), might look similar on the...
- 2 min
5 days ago · The S&P 500 Top 50 consists of 50 of the largest companies from the S&P 500, reflecting U.S. mega-cap performance. Index constituents are weighted by float-adjusted market capitalization.
Jan 4, 2022 · Tesla, Meta (parent of Facebook), Nvidia, Berkshire Hathaway B shares, and UnitedHealth rounded out the top 10 stocks. The dominance of the top companies in the S&P 500 has been steadily rising, but the pandemic accelerated the trend.
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