Reference

OPEX Calendar

Upcoming US options expiration dates. Monthly OPEX (3rd Friday) and quarterly Triple Witching at a glance.

Last updated: Jun 2, 5:28 PM EDTRefreshes every 1 hour

Next OPEX

Friday, June 19, 2026

In 17 days · Monthly Options Expiration

Next 12 expirations

Date	Type	Description	Countdown
Fri, Jun 19	Monthly	Monthly Options Expiration	17 days
Fri, Jul 17	Monthly	Monthly Options Expiration	45 days
Fri, Aug 21	Monthly	Monthly Options Expiration	80 days
Fri, Sep 18	Monthly	Monthly Options Expiration	108 days
Fri, Oct 16	Monthly	Monthly Options Expiration	136 days
Fri, Nov 20	Monthly	Monthly Options Expiration	171 days
Fri, Dec 18	Monthly	Monthly Options Expiration	199 days
Fri, Jan 15	Monthly	Monthly Options Expiration	227 days
Fri, Feb 19	Monthly	Monthly Options Expiration	262 days
Fri, Mar 19	Monthly	Monthly Options Expiration	290 days
Fri, Apr 16	Monthly	Monthly Options Expiration	318 days
Fri, May 21	Monthly	Monthly Options Expiration	353 days

Fri, Jun 19Monthly

Monthly Options Expiration

In 17 days

Fri, Jul 17Monthly

Monthly Options Expiration

In 45 days

Fri, Aug 21Monthly

Monthly Options Expiration

In 80 days

Fri, Sep 18Monthly

Monthly Options Expiration

In 108 days

Fri, Oct 16Monthly

Monthly Options Expiration

In 136 days

Fri, Nov 20Monthly

Monthly Options Expiration

In 171 days

Fri, Dec 18Monthly

Monthly Options Expiration

In 199 days

Fri, Jan 15Monthly

Monthly Options Expiration

In 227 days

Fri, Feb 19Monthly

Monthly Options Expiration

In 262 days

Fri, Mar 19Monthly

Monthly Options Expiration

In 290 days

Fri, Apr 16Monthly

Monthly Options Expiration

In 318 days

Fri, May 21Monthly

Monthly Options Expiration

In 353 days

Dates auto-update at most once per hour. All dates shown in UTC reference; local market settlement is at the close on the listed date (US Eastern Time).

What is OPEX?

OPEX is short for options expiration — the day when listed options contracts stop trading and either get exercised or expire worthless. In US equity markets, monthly options on stocks and ETFs expire on the third Friday of every month. Quarterly options, plus index futures and equity index options, all align on the third Friday of March, June, September, and December — a setup traders call Triple Witching.

Why traders care about OPEX dates

Volume spikes. Hedge unwinds, position rolls, and pin risk drive outsized volume in the last hour of trading on OPEX day.
Pin risk. Heavy open interest at specific strikes can magnetize the underlying price toward those strikes through expiration.
Volatility regime change. Implied vol often resets after OPEX as dealer hedging unwinds. Some traders intentionally stay flat into OPEX week.
Triple Witching is bigger. Quarterly OPEX involves three derivatives expiring at once, with substantially higher volume and more aggressive rebalancing flows. Worth marking on the calendar.

How these dates are calculated

Pure date math — no API calls. Monthly OPEX is the third Friday of each month. Quarterly OPEX is the last Friday of March, June, September, and December (which always falls on the third Friday under current US listing rules). Holiday-shifted exchange closures can occasionally move expiration to Thursday — verify against your broker for any date that touches a major holiday week.

Reference data only. Verify against your broker, exchange, or OCC publications for any date that requires precision (especially around holidays and exchange schedule changes).

MiyagiTrades tools are provided for educational and informational purposes only. They do not provide financial advice, trading signals, brokerage services, or trade execution. Verify all calculations against your broker, exchange, or trading platform before placing trades.