S&P 500 Companies by Market Cap
The 25 largest companies in the S&P 500 index, ranked by market capitalization. These 25 companies represent 55.7% of the entire index.
| # | Company | Sector | Market Cap | Price | 2026 Return | 5Y Return |
|---|---|---|---|---|---|---|
| 1 | AAPL Apple Inc. | Technology | $5.03T | $344.63 | +27.1% | +98.7% |
| 2 | NVDA NVIDIA Corporation | Technology | $4.94T | $204.64 | +10.0% | +598.8% |
| 3 | MSFT Microsoft Corporation | Technology | $3.88T | $521.91 | +8.6% | +61.4% |
| 4 | GOOGL Alphabet Inc. | Communication Services | $3.44T | $279.84 | -10.4% | +95.0% |
| 5 | GOOG Alphabet Inc. | Communication Services | $3.42T | $278.22 | -11.2% | +94.1% |
| 6 | AMZN Amazon.com, Inc. | Consumer Cyclical | $2.60T | $240.35 | +4.1% | +44.2% |
| 7 | TSLA Tesla, Inc. | Consumer Cyclical | $1.58T | $399.81 | -11.1% | +13.5% |
| 8 | META Meta Platforms, Inc. | Communication Services | $1.57T | $614.99 | -6.6% | +84.6% |
| 9 | AVGO Broadcom Inc. | Technology | $1.56T | $326.08 | -5.3% | +431.9% |
| 10 | LLY Eli Lilly and Company | Healthcare | $1.26T | $1417.54 | +32.5% | +435.3% |
| 11 | BRK-B Berkshire Hathaway Inc. | Financial Services | $1.16T | $542.49 | +7.9% | +81.4% |
| 12 | MU Micron Technology, Inc. | Technology | $1.00T | $884.74 | +210.2% | +871.8% |
| 13 | WMT Walmart Inc. | Consumer Defensive | $983B | $123.51 | +11.6% | +171.5% |
| 14 | JPM JPMorgan Chase & Co. | Financial Services | $895B | $337.04 | +6.6% | +141.0% |
| 15 | AMD Advanced Micro Devices, Inc. | Technology | $824B | $504.80 | +135.7% | +250.8% |
| 16 | V Visa Inc. | Financial Services | $773B | $413.59 | +18.6% | +97.9% |
| 17 | XOM ExxonMobil Holdings Corporation | Energy | $764B | $187.25 | +58.7% | +259.8% |
| 18 | JNJ Johnson & Johnson | Healthcare | $658B | $273.20 | +34.1% | +82.4% |
| 19 | MA Mastercard Incorporated | Financial Services | $556B | $638.01 | +12.5% | +82.9% |
| 20 | ABBV AbbVie Inc. | Healthcare | $521B | $294.89 | +32.9% | +160.1% |
| 21 | CVX Chevron Corporation | Energy | $459B | $235.52 | +58.9% | +142.5% |
| 22 | COST Costco Wholesale Corporation | Consumer Defensive | $449B | $1012.28 | +18.1% | +88.1% |
| 23 | PLTR Palantir Technologies Inc. | Technology | $442B | $184.11 | +3.6% | +911.2% |
| 24 | CSCO Cisco Systems, Inc. | Technology | $412B | $104.51 | +38.2% | +89.1% |
| 25 | KO The Coca-Cola Company | Consumer Defensive | $405B | $94.08 | +37.2% | +82.5% |
S&P 500 Market Cap Concentration
The S&P 500 is a market-cap-weighted index, meaning the largest companies have the greatest impact on its performance. This concentration has reached historic levels — the top 10 companies now represent 41.2% of the entire index, and the top 25 account for 55.7%.
This means that when you buy an S&P 500 index fund like SPY or VOO, over 41.2% of your money effectively goes into just 10 stocks. The remaining ~490 companies share less than 59% of the index weight.
The Trillion-Dollar Club
12 companies in the S&P 500 currently have a market capitalization exceeding $1 trillion:
Sector Breakdown of the Top 25
Technology dominates the top 25 S&P 500 companies with 8 stocks representing 45.7% of the top-25 market cap. Financial Services is second with 4 companies (8.6%).
Understanding the S&P 500 Index
What is the S&P 500?
The S&P 500 (Standard & Poor's 500) is a stock market index that tracks 500 of the largest publicly traded companies in the United States. Created in 1957, it is widely regarded as the single best gauge of large-cap U.S. equity performance. The index covers approximately 80% of the total U.S. stock market capitalization.
How is it Weighted?
Unlike the Dow Jones Industrial Average, which is price-weighted, the S&P 500 uses market-cap weighting. This means a company's influence on the index is proportional to its total market value. A 1% move in AAPL ($5.03T) has a far greater impact than a 1% move in the smallest S&P 500 company.
How to Invest in the S&P 500
You cannot invest directly in the S&P 500 index itself, but you can buy ETFs that track it. The most popular options are:
- SPY — SPDR S&P 500 ETF Trust (the original, launched 1993)
- VOO — Vanguard S&P 500 ETF (lowest expense ratio at 0.03%)
- SPLG — SPDR Portfolio S&P 500 ETF (low-cost alternative)
For a comparison of DCA vs lump sum investing into these stocks, see our DCA vs Lump Sum calculator.
S&P 500 vs Other Indices
The S&P 500 is one of several major U.S. stock market indices. It differs from the Dow Jones (30 stocks, price-weighted), the NASDAQ-100 (100 tech-heavy stocks), and the Total Market Index (all US stocks). For a full comparison, see our US Stock Market Indices guide.
Explore S&P 500 Stocks by Sector
Frequently Asked Questions
What are the largest companies in the S&P 500?
The largest S&P 500 companies by market cap are Apple, NVIDIA, Microsoft, Alphabet, Alphabet. The top 10 companies alone represent 41.2% of the entire index's market capitalization.
How many trillion-dollar companies are in the S&P 500?
There are currently 12 companies in the S&P 500 with a market cap over $1 trillion: AAPL, NVDA, MSFT, GOOGL, GOOG, AMZN, TSLA, META, AVGO, LLY, BRK-B, MU.
What percentage of the S&P 500 is technology?
Technology is the largest sector in the S&P 500, representing 35.1% of the total market capitalization. In the top 25 companies, 8 are in the Technology sector.
How often does the S&P 500 change its components?
S&P Dow Jones Indices reviews the S&P 500 quarterly (March, June, September, December) and may add or remove companies based on market cap, liquidity, sector representation, and financial viability criteria.
What is the average annual return of the S&P 500?
The S&P 500 has historically returned about 10% annually on average before inflation, or about 7% after inflation. However, individual years vary significantly — the index has gained over 20% in some years and lost more than 30% in others.
How is the S&P 500 weighted?
The S&P 500 is a market-cap-weighted index, meaning larger companies have a greater influence on the index's performance. This is why movements in the top 10 stocks (which represent over 40% of the index) have an outsized impact on S&P 500 returns.
Data sourced from Yahoo Finance. Market cap and prices updated regularly.