The S&P 500 consists of 500 companies that have issued a total of 504 stocks. Some companies such as Alphabet have issued multiple classes of shares. The top 10 largest holdings are listed on the official S&P Global website. An S&P 500 company must meet specific requirements to be included as a constituent within the index.

S&P doesn't provide the total list of holdings, however, at least not for free. Subscribers to S&P's research unit, Capital IQ, can get access to the entire list. 澳洲幸运5官方开奖结果体彩网:S&P 500 companies represent the top companies within their industries and they're a gauge of U.S. economic activity.

S&P 500 Inclusion Criteria

The S&P 500 was created in 1957 and it's one of the most widely quoted stock market indexes. S&P 500 stocks represent the largest publicly traded companies in the U.S. The S&P 500 focuses on the U.S. market's 澳洲幸运5官方开奖结果体彩网:large-cap sector.

An S&P 5ꦗ00 company must meet a𝓰 broad set of criteria to be added to the index:

• It must have a total 澳洲幸运5官方开奖结果体彩网:market capitalization of at least $14.5 billion.
• Must be a U.S. company
• A float-adjusted liquidity ratio (FALR) greater than or equal to 0.75
• A positive sum of the most recent four consecutive quarters of trailing earnings
• Positive earnings for its most recent quarter
• Must meet certain liquidity requirements

Companies may be removed from the S&P 500 if they deviate substantially from these standards.

S&P 500 Calculation

The S&P 500 is a free-float market capitalization-weighted index. Market capitalization represents the total dollar market value of a company's outstanding equity shares. Market cap is calculated by multiplying the total number of outstanding shares of stock by the company's current stock price. A company with 20 million shares outstanding in which its stock is selling for $100 per share would have a market cap of $2 billion.

The more valuable an individual company's stock becomes, the more it contributes to the S&P 500's overall return as a result. It's not uncommon for three-quarters of the index's return to be linked to only 50 to 75 stocks.

The addition or subtraction of smaller companies from the index therefore doesn't have a noticeable impact on the overall return of the index. The removal or addition of even just one of the largest stocks can have a major effect, however.

S&P 500 Sector Breakdown

These are the top sectors and their weightings within the S&P 500 index as of Feb. 25, 2025.

Being aware of the S&P's sector weighting is important because sectors with a smaller weighting may not have a material impact on the value of the overall index. This can be the case even if they're outperforming or 澳洲幸运5官方开奖结果体彩网:underperforming the market.

If oil prices are rising and leading to i𝔉ncreased profits for the energy sector,🀅 those stocks represent only 4.4% of the S&P 500. Oil stocks may not lead to a higher S&P if the more heavily weighted information technology sector is underperforming.

Top 25 Components by Market Cap

The exact weightings of the top 25 components aren't available from S&P directly so the weightings below are from the SPDR S&P 500 Trust ETF (SPY). SPY is the oldest 澳洲幸运5官方开奖结果体彩网:exchange-traded fund (ETF) that tracks the S&P 500. It holds $625.5 billion in assets under management (AUM) as of Feb. 25, 2025 and is highly traded.

The SPY's portfolio weightings provide a good proxy for investing in the underlying S&P 500 index as a result. The two may not be exactly the same, however. These are the 25 largest S&P 500 index constituents by weight as of Feb. 25, 2025:

1. Apple (AAPL): 7.35%
2. NVIDIA (NVDA): 6.29%
3. Microsoft (MSFT): 5.91%
4. Amazon (AMZN): 3.91%
5. Meta (META), formerly Facebook, Class A: 2.86%
6. Alphabet Class A (GOOGL): 2.06%
7. Broadcom (AVGO): 1.91%
8. Tesla (TSLA): 1.81%
9. Berkshire Hathaway (BRK.B): 1.79%
10. Alphabet Class C (GOOG): 1.69%
    
11. JPMorgan Chase (JPM): 1.44%
12. Eli Lilly (LLY): 1.36%
13. Visa Class A (V): 1.19%
14. Exxon Mobil (XOM): 0.96%
15. Costco (COST): 0.90%
16. Mastercard Class A (MA): 0.90%
17. UnitedHealth Group (UNH): 0.83%
18. Netflix (NFLX): 0.83%
19. Walmart (WMT): 0.80%
20. Procter & Gamble (PG): 0.79%
21. Johnson & Johnson (JNJ): 0.77%
    
22. Home Depot (HD): 0.74%
23. AbbVie (ABBV): 0.70%
24. Bank of America: (BAC): 0.58%
25. Salesforce Inc. (CRM): 0.58%

The Bottom Line

澳洲幸运5官方开奖结💧果体彩网:The top 25 companies in the S&P ꧅500 are some of the🎀 most well-known companies in the world. A large portion of the top 10 are tech companies such as Apple, Microsoft, and Google. Investors can purchase the individual stocks of the companies or invest in a fund that tracks the S&P 500.

The comments, opinions, and analyses expressed on Investopedia are for informational purposes online. Read our 澳洲幸运5官方开奖结果体彩网:warranty and liability disclaimer for more info.