Options Market

The options market is the part of the financial system in which options contracts are created and traded. It includes regulated exchanges, where standardised contracts on shares, stock indices, interest rates, currencies and commodities change hands, and the over-the-counter market, where banks and large investors agree tailor-made options directly with each other. Together they form one of the largest segments of the derivatives market.

Options are used to hedge risk, to earn income and to speculate on price moves with limited upfront cost. In the US, listed equity options are cleared through the Options Clearing Corporation, which is unrelated to the banking regulator that shares its initials. Since the late 2010s a separate crypto options market has grown on specialist exchanges and, more recently, on regulated venues.

An option is like a paid reservation. Paying a small fee to hold a holiday home at today's price gives the right to book it later even if prices rise, but no obligation to go. The options market is the busy marketplace where such reservations on shares, currencies or bitcoin are bought and sold, and where their prices change every second as conditions shift.

Some people buy these reservations as insurance against a bad outcome; others sell them to collect the fees, accepting the risk that they will have to honour the deal at an unfavourable price. Professional dealers stand in the middle, quoting prices to both sides.

Contracts resembling options have existed for centuries, including in the Dutch tulip trade of the 1630s, but modern trading began in 1973, when the Chicago Board Options Exchange opened as the first exchange for standardised, centrally cleared stock options. In the same year, Fischer Black and Myron Scholes published the pricing model that became the Black-Scholes model, giving traders a common framework for valuing contracts. Electronic trading, index options and short-dated contracts have since expanded activity enormously.

• Exchange-traded options. Listed contracts have standard sizes, strike prices and expiry dates. A central counterparty stands between buyer and seller, reducing counterparty risk, and margin rules apply to sellers.
• Over-the-counter options. Banks and institutions negotiate custom terms, such as unusual expiries or payoffs, under master agreements. These OTC derivatives are more flexible but less transparent.
• Products. Contracts are written on individual stocks, indices, exchange-traded funds, futures, currencies and interest rates.

Every market lists two basic types: call options, which give the right to buy, and put options, which give the right to sell. Contracts also differ in when they can be exercised. American-style options can be exercised at any time up to expiry, which is common for single-stock options in the US, while European-style options can be exercised only on the expiry date, which is usual for index options and most crypto options. Many index and crypto contracts are cash-settled, paying the difference in money rather than delivering the underlying asset. Expiries range from the same day to several years ahead.

Hedgers, such as fund managers and companies, buy options to protect against adverse price moves. Income-focused investors sell options against assets they own. Speculators use options to take leveraged views on direction or volatility. A market maker quotes buy and sell prices continuously and hedges the resulting exposure, earning the spread. Option prices depend on the underlying price, the strike, time to expiry, interest rates and, above all, expected volatility; the level of volatility implied by market prices is itself watched as a gauge of fear or calm.

Options on bitcoin and ether trade on specialist crypto derivatives exchanges, the largest of which for many years has been Deribit, which Coinbase agreed to acquire in 2025. The CME lists regulated options on its bitcoin and ether futures, and in November 2024 options began trading in the US on spot bitcoin ETFs. DeFi protocols also offer on-chain options and vaults that sell options automatically. Crypto options typically show higher volatility, and therefore higher premiums, than options on mainstream shares, and expiries on large venues are watched closely by traders.

In the US, options on securities are overseen by the Securities and Exchange Commission, while options on futures and commodities fall under the CFTC; other countries have their own regulators. Retail brokers usually require customers to apply for options approval at levels tied to experience. Buying options can lead to the loss of the entire premium, and selling uncovered options can produce losses far larger than the premium received. Liquidity varies widely: contracts far from the current price or with distant expiries may have wide spreads. Many crypto options venues operate offshore, outside the investor protections of regulated markets, which adds platform and custody risk to market risk.