S&P 100

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The S&P 100 Index is a stock market index of United States stocks maintained by Standard & Poor's.

Quick facts: Foundation, Operator, Exchanges, Trading symb...
S&P 100
FoundationJune 15, 1983; 40 years ago (1983-06-15)[1]
OperatorS&P Dow Jones Indices[2]
ExchangesNYSE, Nasdaq
Trading symbol
  • OEX
  • ^OEX
  • SP100
  • ^SP100
Constituents101[3]
TypeLarge-cap[2]
Market capUS$28.6 trillion
(as of December 29, 2023)[4]
Weighting methodFree-float capitalization-weighted[5]
Related indicesS&P 500
Websitewww.spglobal.com/spdji/en/indices/equity/sp-100/
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Index options on the S&P 100 are traded with the ticker symbol "OEX". Because of the popularity of these options, investors often refer to the index by its ticker symbol.

The S&P 100, a subset of the S&P 500, includes 101 (because one of its component companies has two classes of stock) leading U.S. stocks with exchange-listed options. Constituents of the S&P 100 are selected for sector balance and represent about 67% of the market capitalization of the S&P 500 and almost 54% of the market capitalization of the U.S. equity markets as of December 2020. The stocks in the S&P 100 tend to be the largest and most established companies in the S&P 500.[1]

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