To make exchange trading practical, a dedicated clearing entity was organized to handle trade matching, settlement, and performance guarantees. Central clearing matters because it reduces counterparty risk—the risk that one side of a trade cannot pay or deliver. This step helped standardization work at scale by supporting reliable settlement behind the scenes.
The Chicago Board Options Exchange (CBOE) began operations as the first U.S. exchange dedicated to standardized, exchange-traded stock options. Trading started with call options on 16 stocks, helping move options from a largely customized over-the-counter market toward a more uniform, exchange-based system. This launch set the foundation for national growth in listed options markets.
The American Stock Exchange (AMEX) began trading listed options, expanding the new standardized options model beyond Chicago. More than one options venue increased competition and encouraged broader market participation. It also increased the need for coordinated clearing and common contract standards across exchanges.
The Philadelphia-Baltimore-Washington Exchange (later known as the Philadelphia Stock Exchange/PHLX) added listed options trading. This continued the shift from a single-exchange experiment to a multi-exchange national market. With more exchanges listing similar products, coordination of listings, surveillance, and clearing became more important.
The Pacific Exchange began trading stock options, extending listed options activity to another major regional market. New venues helped boost volume and broaden access, but also raised policy questions about whether the same option class should be listed on multiple exchanges. These questions later became central to U.S. options market structure debates.
The Midwest Option Exchange began trading listed options, adding another participant to the growing exchange-traded options network. More exchanges meant more trading opportunities, but also more complexity for regulators and market participants. This period set the stage for later SEC reviews of market growth and rules.
Put options—contracts that generally benefit when prices fall—began trading on several U.S. options exchanges, including CBOE. Adding puts completed a basic “calls and puts” toolkit, which made hedging (risk reduction) and more complex strategies possible in listed markets. The debut also accelerated attention to investor protection and market oversight.
As options markets expanded quickly, the SEC began a deeper evaluation of rules, surveillance, and market structure. During this review, exchanges agreed to a moratorium that limited the listing of new options classes. The pause aimed to slow growth long enough for regulators and exchanges to assess risks and strengthen oversight.
After the review period, the moratorium ended and exchanges expanded the number of underlying stocks with listed options. This marked a transition from a cautious pause to renewed growth under a more developed regulatory framework. The expansion helped listed options become a mainstream part of U.S. equity markets.
CBOE introduced options based on a stock index (the CBOE 100, later associated with the S&P 100). Index options mattered because they allowed investors to hedge or take positions on the overall market, not just individual stocks. This was a key turning point toward using exchange-traded options for portfolio-level risk management.
CBOE launched SEC-regulated options on the S&P 500 Index (SPX). These contracts created a widely used hedging and trading tool tied to a major benchmark for U.S. equities. Over time, SPX options became central to institutional risk management and to later volatility-related measures.
Long-term Equity Anticipation Securities (LEAPS) were introduced, offering listed options with much longer times to expiration than standard contracts. Longer maturities helped investors use options for multi-year investment views and longer-term hedging. This expanded the range of strategies that could be done with exchange-traded options.
The Options Industry Council (OIC) was founded by OCC and U.S. options exchanges to provide education about exchange-listed options. Education became more important as options use spread beyond professionals to a broader public audience. OIC’s creation reflected a maturing market that needed clearer explanations of benefits and risks.
The SEC approved the trading of FLEX options, which allow certain terms (like strike price and expiration date) to be customized while still trading on an exchange. FLEX options aimed to bring some customization—common in over-the-counter markets—into a more transparent, centrally cleared environment. This represented a major step in blending standardization with flexibility within U.S. exchange-traded options.
CBOE introduced the Market Volatility Index, later widely known as the VIX, originally calculated from S&P 100 (OEX) option implied volatilities. A volatility index is designed to summarize how much price movement traders expect, based on options prices. This helped make options-based expectations of market risk more visible and easier to track over time.
By the mid-1990s, U.S. exchange-traded options had developed into a national, multi-exchange system supported by centralized clearing, broad product coverage (equity and index options), and expanded contract designs like LEAPS and FLEX. This period marked the consolidation of listed options as a core part of U.S. financial markets rather than a niche product. The result was a durable market structure that supported continued growth after 1995.
Development of Exchange-Traded Options in the United States (1973-1995)