SQUAWKFLOW

OPEX Calendar 2026

Expiration and settlement dates for listed options, each one read off an exchange document rather than calculated. Every date on these pages carries the URL it came from and the day it was checked.

NEXT STANDARD EXPIRATION

Friday, September 18, 2026

A quarterly session: index futures, index options and single stock options expire together. Standard A.M.-settled index options stop trading on 2026-09-17.

Pages

  • OPEX Calendar 2026: Monthly Options Expiration Dates

    Every 2026 monthly options expiration date, read off the Cboe expiration calendar, with the last trading day for standard A.M.-settled index options and the June exception.

  • VIX Expiration Calendar: 2026 and 2027 Dates

    Standard monthly VIX option and future expiration dates for the rest of 2026 and into 2027, each with the Cboe source it was read from.

  • SPX Settlement Dates: AM and PM Rules

    How standard SPX options settle to the opening print, why they stop trading the day before, and how SPXW weeklys differ, quoted from the Cboe contract specifications.

  • Triple witching explained

    What settles on the four quarterly sessions, the 2026 dates, and the two settlement windows those days run through. The quarterly dates live there rather than being repeated as a page of their own.

How these dates were checked

No date on these pages is produced by the third Friday rule. That rule is wrong for June 2026: NYSE observes Juneteenth on Friday June 19, 2026, so the standard expiration for that month falls on Thursday June 18, 2026. Each date was instead read off the exchange document that publishes it, on 2026-09-01.

A plain-text copy of this page is at /calendar.md. Educational content, not financial advice.