US Options Expiration & Quad Witching is a free calendar you can subscribe to on Nundina, with 18 dates listed. Data from OCC. Subscribe to it on Nundina and every date lands in your own calendar, updated automatically.
Monthly US equity options expiration days (the third Friday, moved to Thursday when the market is closed), with the quarterly quad-witching Fridays in March, June, September and December flagged.
Browse all calendars on Nundina