Record US Options Contracts Have Expired
Investors navigated a massive $7 trillion expiration event as dealers unwound significant hedging positions.
Updated on Sept. 18, 2026 in Stock Markets
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Approximately $7 trillion in notional value of US options contracts expired on Friday. This event, known as triple witching, represented 25% of the total open interest in the US market.
Why it matters
The massive expiration forces a technical reset in the market as dealers no longer need to maintain hedges for the expired positions. This shifts the hedging dynamics that previously dampened daily volatility.
The expiration involved $7 trillion in underlying asset value, accounting for 25% of total US options exposure. Approximately 60% of the volume was set to settle or roll at the market open.
The players
Citadel Securities
This major financial institution compiled the data regarding market open interest and current options expiration.
The details
Triple witching involves the simultaneous expiration of stock options, index options, and futures contracts, creating a large-scale liquidity event. Dealers typically hedge these positions by buying or selling underlying assets to maintain market stability, meaning the expiration removes the need for this activity.
Timeline
September 16, 2026: Data was collected for open-interest figures.
September 18, 2026: The $7 trillion in options contracts expired.
September 2026: This period remains under a bearish seasonal outlook.
Market Dynamics
This event serves as the second-largest triple-witching expiration on record, following the peak seen in June 2026. Such large-scale expirations signal shifts in institutional hedging patterns that influence broader macroeconomic liquidity.
Retail investors may experience shifts in market volatility as the large-scale hedging activity by dealers concludes. This reset can alter price movements for underlying assets in the immediate aftermath of the expiration.
The takeaway
The expiration of such a large volume of contracts serves as a significant technical reset for market volatility. Investors should monitor how the removal of dealer hedges affects market pricing as the season progresses.
Further reading
For more information on market trends, visit the Stock Markets section.
Live Poll
Do you generally expect increased market volatility during major options expiration periods?
