S&P 100

S&P 100. The S&P 100 is a stock market index of large-cap companies listed in the United States, maintained by S&P Dow Jones Indices. It is a subset of the S&P 500, designed to represent the performance of major industry leaders with exchange-listed options. The index is a key benchmark for institutional investors and is widely used as the underlying asset for various financial derivatives and investment funds.

Overview

The index was launched in 1983 to provide a benchmark for blue-chip American equities with active options markets. It is calculated using a float-adjusted market capitalization methodology, similar to its parent index, the S&P 500. The component companies are all constituents of the S&P 500 and are selected for their market size and liquidity. Prominent members have historically included Apple Inc., Microsoft, JPMorgan Chase, and Johnson & Johnson. The index is reviewed quarterly by a committee at S&P Dow Jones Indices to ensure it continues to meet its criteria, with changes often coinciding with adjustments to the S&P 500.

Composition and Selection

The composition is determined by the S&P Dow Jones Indices committee based on specific eligibility criteria. Primary factors include being a constituent of the S&P 500, having exchange-listed options, and demonstrating substantial market capitalization. The sector representation aims to mirror that of the broader S&P 500, covering major industries such as Information technology, Health care, and Financials. Notable companies like Berkshire Hathaway, ExxonMobil, and Alphabet Inc. are typically included. The selection process emphasizes liquidity and investability, making the index a reliable gauge for large-cap market performance and a common basis for options trading strategies.

Performance and Historical Data

The index's performance is closely correlated with that of the S&P 500, though it can show slight variances due to its concentrated nature. Historical data tracks its trajectory through major economic events, including the Dot-com bubble, the Financial crisis of 2007–2008, and the COVID-19 pandemic. Its value is disseminated in real-time under the ticker symbol OEX, which is also the root symbol for its associated options contracts on the Chicago Board Options Exchange. Long-term charts often compare its returns to other benchmarks like the Dow Jones Industrial Average and the Nasdaq Composite.

Investment Products

A wide array of financial products are linked to the index, providing investors with various exposure methods. The most direct is the iShares S&P 100 ETF, which trades on the New York Stock Exchange. The index is also the underlying asset for popular options and futures contracts, particularly the OEX options traded on the Chicago Board Options Exchange. These derivatives are heavily utilized by institutions like Goldman Sachs and Morgan Stanley for hedging and speculative purposes. Additionally, structured products, index funds, and exchange-traded notes from issuers such as Invesco and State Street Corporation offer further avenues for investment.

Comparison with Other Indices

Compared to the broader S&P 500, it contains fewer constituents, leading to a more concentrated portfolio dominated by mega-cap stocks. It differs significantly from the Dow Jones Industrial Average, which is price-weighted and contains only 30 companies like The Boeing Company and Walmart. While the Nasdaq-100 focuses heavily on technology firms such as Tesla, Inc. and Meta Platforms, it includes more balanced sector exposure. The Russell 1000 Index, maintained by FTSE Russell, offers a wider universe of large-cap stocks but lacks the specific options-market focus. Each index, including the Wilshire 5000, serves distinct purposes for different segments of the Wall Street investment community. Category:Stock market indices in the United States Category:S&P Dow Jones Indices