Largest 20 S&P 500 Companies by Market Cap in 1989
(as of 12/29/1989, in billions USD)Largest 20 S&P 500 Companies by Market Cap in 1990
(as of 12/31/1990, in billions USD)Largest 20 S&P 500 Companies by Market Cap in 1991
(as of 12/31/1991, in billions USD)Largest 20 S&P 500 Companies by Market Cap in 1992
(as of 12/31/1992, in billions USD)Largest 20 S&P 500 Companies by Market Cap in 1993
(as of 12/31/1993, in billions USD)Largest 20 S&P 500 Companies by Market Cap in 1994
(as of 12/30/1994, in billions USD)Largest 20 S&P 500 Companies by Market Cap in 1995
(as of 12/29/1995, in billions USD)Largest 20 S&P 500 Companies by Market Cap in 1996
(as of 12/31/1996, in billions USD)Largest 20 S&P 500 Companies by Market Cap in 1997
(as of 12/31/1997, in billions USD)Largest 20 S&P 500 Companies by Market Cap in 1998
(as of 12/31/1998, in billions USD)Largest 20 S&P 500 Companies by Market Cap in 1999
(as of 12/31/1999, in billions USD)Largest 20 S&P 500 Companies by Market Cap in 2000
(as of 12/29/2000, in billions USD)Largest 20 S&P 500 Companies by Market Cap in 2001
(as of 12/31/2001, in billions USD)Largest 20 S&P 500 Companies by Market Cap in 2002
(as of 12/31/2002, in billions USD)Largest 20 S&P 500 Companies by Market Cap in 2003
(as of 12/31/2003, in billions USD)Largest 20 S&P 500 Companies by Market Cap in 2004
(as of 12/31/2004, in billions USD)Largest 20 S&P 500 Companies by Market Cap in 2005
(as of 12/30/2005, in billions USD)Largest 20 S&P 500 Companies by Market Cap in 2006
(as of 12/29/2006, in billions USD)Largest 20 S&P 500 Companies by Market Cap in 2007
(as of 12/31/2007, in billions USD)Largest 20 S&P 500 Companies by Market Cap in 2008
(as of 12/31/2008, in billions USD)Largest 20 S&P 500 Companies by Market Cap in 2009
(as of 12/31/2009, in billions USD)Largest 20 S&P 500 Companies by Market Cap in 2010
(as of 12/31/2010, in billions USD)Largest 20 S&P 500 Companies by Market Cap in 2011
(as of 12/30/2011, in billions USD)Largest 20 S&P 500 Companies by Market Cap in 2012
(as of 12/31/2012, in billions USD)Largest 20 S&P 500 Companies by Market Cap in 2013
(as of 12/31/2013, in billions USD)Largest 20 S&P 500 Companies by Market Cap in 2014
(as of 12/31/2014, in billions USD)Largest 20 S&P 500 Companies by Market Cap in 2015
(as of 12/31/2015, in billions USD)Largest 20 S&P 500 Companies by Market Cap in 2016
(as of 12/30/2016, in billions USD)Largest 20 S&P 500 Companies by Market Cap in 2017
(as of 12/29/2017, in billions USD)Largest 20 S&P 500 Companies by Market Cap in 2018
(as of 12/31/2018, in billions USD)Largest 20 S&P 500 Companies by Market Cap in 2019
(as of 12/31/2019, in billions USD)Largest 20 S&P 500 Companies by Market Cap in 2020
(as of 12/31/2020, in billions USD)Largest 20 S&P 500 Companies by Market Cap in 2021
(as of 12/31/2021, in billions USD)Largest 20 S&P 500 Companies by Market Cap in 2022
(as of 12/30/2022, in billions USD)Largest 20 S&P 500 Companies by Market Cap in 2023
(as of 12/29/2023, in billions USD)Largest 20 S&P 500 Companies by Market Cap in 2024
(as of 12/31/2024, in billions USD)Largest 20 S&P 500 Companies by Market Cap in 2025
(as of 12/12/2025, in billions USD)- Basic Materials
- Communication Services
- Consumer Cyclical
- Consumer Defensive
- Energy
- Financial Services
- Health Care
- Industrials
- Technology
- Utilities
Source: Data compiled from EDGAR filings, Ycharts, Bloomberg and Yahoo Finance.
Aggregate Market Cap of the 20 largest S&P 500 Companies in 1989–2024
Aggregate Market Cap of the S&P 500 in 2000–2024
The following chart shows the development of the market cap of the S&P 500 index for comparison.
Market Capitalization vs. Market Value
Market value and market capitalization are two frequently used – and usually confused – terms when discussing the profitability and viability of companies.
Market Capitalization
Market capitalization, or market cap, is a simple indicator based on stock price. A company’s market capitalization is calculated by multiplying the number of shares outstanding by the current price per share. For example, a company with 50 million outstanding shares and a share price of $100 per share would have a market capitalization of $5 billion. Market capitalization is essentially a synonym for the market value of equity.
Market Value
While market cap is often referred to as the value of a company, or what a company is worth, determining the true market value of a company is much more complicated. It is determined by the valuations or multiples that investors attribute to companies, such as price to sales, price to earnings, enterprise value to EBITDA, etc. These various metrics take into account several factors in addition to shareholder equity, such as outstanding bonds, long-term growth potential, company debt, taxes, and interest payments. The higher the valuation, the higher the market value.