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Quadruple Witching Week
Mon, Mar 16
|Foundry Main Room
Quadruple Witching occurs when 4 different derivatives expire on the same day.
Time & Location
4 more dates
Mar 16, 2026, 7:00 AM – 7:30 AM
Foundry Main Room
About the Event
Quadruple Witching is a stock market phenomena that occurs 4 time a year, in March, June, September, and December. Quadruple Witching day is the Third Friday of the month. Although the "Witching" occurs on the Friday of that week, it can affect trading all of that week leading up to that third Friday. This notice is posted on the Foundry calendar for reference and possible discussion for those in the Foundry.
The Derivatives that expire that Friday are
1) Stock Options
2) Stock Index Options
3) Stock Index Futures
4) Single Stock Futures
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