Largest 20 S&P 500 companies by market cap

Top 20 S&P 500 Companies by Market Cap (1990 – 2022)

Top 20 S&P 500 companies by market cap in 1990

(as of 1/1/1990, in millions USD)

1990

Total: 449,460

62,580Exxon Mobil
54,480IBM
29,030Merck
28,010Bristol-Myers Squibb
26,370Coca-Cola
25,400Walmart
23,010Procter & Gamble
19,810Verizon
19,770Johnson & Johnson
19,180AT&T
19,050Eli Lilly
17,2003M
16,860PepsiCo
15,170Walt Disney
14,140AIG
13,680Boeing
13,220DuPont
11,210American Express
10,890Pfizer
10,400Schlumberger
Source: own data compilation from Ycharts.com, Wikipedia.org, Fortune.com and CNN.com.
  • Basic Materials
  • Communication Services
  • Consumer Cyclical
  • Consumer Defensive
  • Energy
  • Financial Services
  • HealthCare
  • Industrials
  • Technology
  • Utilities

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.

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