SPX Options Expiration Calendar: Weekly, Monthly, 0DTE

Expiration is not a single event on the SPX calendar. Standard monthly contracts, weekly expirations, end-of-month contracts, and daily 0DTE listings can create very different planning and settlement considerations. Knowing which contract expires when is a basic part of managing time, liquidity, and risk.

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In this guide, Dr. Rolf Haag breaks down the schedule and explains why the expiration label matters. The first distinction is the traditional monthly cycle, centered on the third Friday, but always checked against the exchange calendar and holiday adjustments. Options trading involves substantial risk and is not suitable for every trader. This article is educational and not personalized investment advice.

SPX Options Expiration Calendar: Monthly SPX Expirations: The Third-Friday Schedule

Standard monthly SPX index options follow a predictable anchor: the third Friday of each month. Cboe lists the settlement date for standard SPX Index Options as the third Friday, making this the central date to mark when building an SPX options expiration calendar. Standard monthly options are distinct from the more frequent weekly and end-of-month contracts, so the expiration label in an options chain matters.

2026 standard monthly expiration dates

Using the regular third-Friday convention, the 2026 schedule is:

• January 16
• February 20
• March 20
• April 17
• May 15
• June 18, holiday-adjusted
• July 17
• August 21
• September 18
• October 16
• November 20
• December 18

June is the exception to the simple Friday pattern because June 19, 2026, is Juneteenth, a U.S. market holiday. The standard monthly expiration is therefore observed on the preceding trading day, Thursday, June 18. Always confirm the final date against the exchange holiday schedule before placing a trade or planning an expiration-week strategy.

Why the date belongs on your planning checklist

The third Friday is not just a calendar marker. It helps separate standard monthly contracts from weekly expirations that may appear beside them in the same chain. It also gives traders a reference point for reviewing open positions, settlement timing, liquidity, and the risk of holding an option through expiration. Cboe identifies standard SPX options as cash-settled, so expiration produces a cash credit or debit rather than delivery of shares. Settlement mechanics and exercise conventions still require careful review before expiration day.

Before analyzing a position, practice identifying upcoming SPX expiration dates in an options chain. Check the expiration label, distinguish the standard monthly contract from weekly or end-of-month alternatives, and verify whether a holiday has changed the normal date. A calendar is a planning aid, not a substitute for confirming the contract specifications and your broker’s displayed settlement information.

Weekly SPX Options: Monday, Wednesday, and Friday Expirations

Weekly expirations create more precise timing choices, but shorter duration also demands tighter risk control.

Unlike the standard monthly contract tied to the third Friday. SPX Weeklys give traders more opportunities to select an expiration that matches a planned holding period or market catalyst. Cboe specifications identify weekly and end-of-month SPX options with settlement dates across the trading week, including Monday, Wednesday, and Friday. That schedule is central when building an SPX options expiration calendar for a specific trading plan.

How the weekly schedule works

Monday expirations can frame the market after a weekend news cycle. Wednesday expirations can align with a midweek decision point, while Friday expirations often provide a way to structure exposure into the end of the regular trading week. The important distinction is not that one weekday is automatically better. It is that each expiration gives a different amount of time for price, volatility, and risk assumptions to change.

Weekly SPX options provide PM settlement. Meaning the final settlement value is determined at the close of the expiration day rather than through the morning settlement process used by standard SPX options. This difference matters when planning exits and assessing the risk of holding a position late in the session. Review the contract specifications before treating a weekly position like a standard monthly contract.

Why traders use Weeklys

Cboe states that SPX Weeklys trade nearly 24 hours a day, five days a week. That extended availability can make them useful for responding to overnight developments and managing exposure during global trading hours. Although access to a market does not remove liquidity, execution, or gap risk. Weekly SPX options also support 0DTE opportunities, where the selected contract expires on the same day it is traded.

That shorter horizon can help traders target a defined event, such as a corporate earnings report or an election, instead of carrying a position through several unrelated sessions. It also leaves less time to recover from an incorrect directional assumption. Time decay, changing implied volatility, spreads, and position size all deserve attention before entering a trade. Options can lose value rapidly, and no expiration schedule guarantees a profitable result.

For education, the practical exercise is to compare the Monday, Wednesday, and Friday contracts in the chain, then document why one expiration fits the intended time horizon. Use the calendar as a planning tool, not as a signal or a substitute for disciplined risk management. Review the Cboe SPX Weeklys specifications for current contract details and holiday-related schedule changes.

Zero Days to Expiration (0DTE): Trading Every Trading Day

0DTE contracts compress the trading window, making timing, defined risk, and an exit plan more important than ever.

Zero Days to Expiration, or 0DTE, means the option reaches expiration on the same trading day. In practice, the SPX options expiration calendar supports a near-daily rhythm because SPX Weeklys offer expirations across the Monday. Wednesday, and Friday cycle, with additional weekly listings available on other trading days. That schedule lets traders focus on a specific session rather than carrying a position through several nights.

The structure can be useful when a trader has a clearly defined market catalyst or technical level in mind. Cboe describes SPX Weeklys as a way to add precision when targeting events such as elections or corporate earnings reports. For an SPX trader, that same precision may apply to a scheduled economic release, a Federal Reserve decision, or a well-defined opening-range setup. The event does not create an edge by itself. It simply narrows the time and market context that the trade is designed to address.

Why gamma changes the trade

As expiration approaches, gamma can increase sharply. A small move in the SPX can then produce a large change in an option’s delta, especially near the strike. This can make an option respond quickly in the trader’s favor, but the same sensitivity accelerates losses when price, timing, or direction is wrong. A 0DTE position therefore requires more than a directional opinion. Traders need a planned entry, an invalidation level, a position size suited to the risk, and a firm decision about when to exit.

Settlement and the opening auction

AM-settled SPX contracts use the opening settlement value calculated from the component stocks, rather than simply the last SPX quote before expiration. That distinction matters because the opening auction can produce a gap between the prior close and the final settlement calculation. Most 0DTE traders close positions before the 9:30 a.m. expiration window to avoid leaving that outcome to the opening print. Cboe’s SPX options specifications provide the applicable settlement and exercise details.

0DTE is a specialized educational topic, not a shortcut to consistent profits. Options can lose value rapidly, and traders should understand the contract’s settlement terms and risk before using it in a live account.

AM vs PM Settlement: How Expiration Type Affects Your Exit

Settlement timing determines which index value sets the final cash result, so expiration labels matter before you enter.

Expiration type is not a minor detail on an SPX options expiration calendar. Standard SPX options and the more frequent Weekly and End-of-Month contracts use different settlement procedures. That difference can affect how traders plan an exit. Especially when the index moves sharply between the prior close, the opening print, and the end of the trading session.

AM and PM settlement differences for SPX options

Contract type	Settlement	Settlement value	Practical planning point
Standard SPX	AM	Based on the opening prices of the component stocks	Expiration risk can remain after the prior session closes because the final value is established from the opening process.
SPX Weekly	PM	Based on the closing value of the index	Positions held through expiration are exposed to the closing-session result rather than an opening calculation.
SPX End-of-Month	PM	Based on the closing value of the index	These contracts expire on the last trading day of the month, so confirm the date and settlement convention together.

Cboe identifies standard SPX options as AM settled, while SPX Weekly and End-of-Month options are PM settled. The difference is important because the market price you see near expiration is not necessarily the same value used for the final settlement calculation. A trader who assumes every SPX contract settles from the close can misjudge the risk of holding a standard contract overnight.

SPX options are also cash-settled. No index shares are delivered at expiration; the account is credited or debited for the cash difference. For a deeper explanation, review these SPX options settlement mechanics before relying on a broker’s expiration display.

European exercise changes the assignment question

Standard SPX options use European exercise style. They can only be exercised at expiration, which eliminates early assignment risk. That does not eliminate market risk, gap risk, or the possibility of an unfavorable settlement value. It simply means the contract is not exercised early in the way an American-style option can be.

Before trading, verify the contract type, settlement designation, expiration date, and your broker’s cutoff rules. Use the calendar as a planning tool, not as a substitute for managing position size and defined risk. Options can lose value rapidly, and no settlement convention guarantees a profitable outcome.

Planning Your Trading Week Around the SPX Expiration Calendar

A reliable weekly plan starts by identifying the expiration, settlement, and market structure before choosing a trade.

The calendar is not just a list of dates. It tells you when time premium may decay fastest, when settlement mechanics change, and when a scheduled event deserves closer attention. Use this process as an educational planning framework, not as a prediction of market direction.

1. Know this week’s expiration type. Begin by labeling each relevant session as a standard monthly expiration, a weekly expiration, an End-of-Month expiration, or a 0DTE session. Standard SPX index options expire on the third Friday of the month, while weekly contracts create more frequent expiration opportunities. Cboe lists weekly and EOM contracts with PM settlement on multiple weekdays, so do not assume every Friday follows the same structure. Confirm the contract specifications before entering a position. Cboe’s SPX specifications are the appropriate starting point.

2. Check the Cboe calendar for holiday-adjusted dates. Compare your broker’s chain with Cboe’s published schedule before building a plan. A market holiday can change the usual relationship between the calendar date and the expiration session. For example, Good Friday can affect how a monthly expiration is interpreted when it falls near the third Friday. Treat the official calendar as the source of truth, then record the actual last trading day in your weekly notes. This small check prevents avoidable errors in expiration-day assumptions.

3. Mark End-of-Month expirations separately. EOM options expire on the last trading day of the month, not necessarily on the third Friday. That date can overlap with month-end positioning, portfolio adjustments, and other scheduled market activity. Highlight it in a different color on your planning sheet and review whether your usual intraday risk limits still fit the session. Cboe identifies the last trading day of the month as the EOM settlement date.

4. Align the strategy with the expiration type. A trader evaluating a multi-session swing idea may prefer to study a monthly contract’s broader time horizon. While an intraday plan may use a 0DTE contract for a defined session. Those are different risk profiles, not interchangeable labels. On monthly expiration Fridays, concepts such as max pain and price pinning are most relevant as market-structure hypotheses to monitor, especially near heavily watched strikes. They are not guarantees that price will settle at a particular level. Define entry, invalidation, position size, and exit rules before the session begins, and be prepared to stand aside when the setup does not meet your criteria.

Finish the review by checking whether the contract is AM or PM settled, then confirm that your plan matches the specific symbol and expiration shown in the chain.

Max Pain, Gamma Effects, and Expiration-Day Price Dynamics

Expiration-day positioning can create magnets, accelerants, and abrupt reversals, so traders must read the chain before reading the candle.

Max pain is a theoretical strike price where the greatest amount of open option interest would expire worthless. Traders often treat it as a potential price magnet because hedging activity around concentrated positions may encourage the index to gravitate toward heavily populated strikes. It is not a guarantee, and it should never be used as a standalone forecast. The third Friday is a particularly important reference point for standard SPX index options, according to SpotGamma’s OPEX framing and Cboe’s expiration specifications.

How gamma changes the intraday tape

Gamma measures how quickly an option’s delta changes as the underlying moves. Near expiration, especially with 0DTE contracts, that sensitivity can become extreme. A small move in SPX can change the hedge requirements associated with a large options position, producing faster adjustments than traders may expect.

Those adjustments can have different effects. When dealer positioning encourages buying into declines and selling into rallies, price may remain compressed around a heavily traded strike. When positioning encourages selling into declines or buying into rallies, an initial move can gather momentum instead. The chain does not tell you which outcome is certain. It helps you identify where a move may slow, accelerate, or fail.

What to monitor before entering

• Open interest by strike: Note unusually large call and put concentrations above and below spot. A crowded strike can become a reference level, but open interest alone does not reveal every participant’s position or hedge.
• Distance from key strikes: Record whether SPX is sitting near a concentration or moving away from it. A tight range near a major strike calls for different expectations than a clean break into an area with less positioning.
• Time to settlement: Gamma risk generally becomes more immediate as expiration approaches. Do not confuse a late-day price magnet with a promise that the market will pin at the calculated max-pain level.
• Scheduled catalysts: Economic data, central-bank communication, and unexpected headlines can overwhelm positioning. Reduce size or stand aside when the event risk is larger than the technical edge you believe the chain provides.

Use the SPX options expiration calendar to mark the relevant monthly, weekly, and 0DTE sessions, then build a plan around levels and invalidation points rather than a predicted settlement price. Options trading involves substantial risk and may not suit every trader. This material is educational, not personalized financial advice, and past market behavior does not guarantee future results.

Frequently Asked Questions

What is the SPX options expiration schedule?

Standard SPX options generally expire on the third Friday of each month. SPX Weekly and End-of-Month contracts add other expiration dates, including scheduled weekdays and the last trading day of the month. Check the current Cboe calendar before planning a trade because holidays can alter the normal schedule. Cboe contract specifications provide the governing details.

When do weekly SPX options expire?

Weekly SPX options can expire on multiple weekdays, depending on the contract series. Cboe lists Weekly and End-of-Month products with Monday, Tuesday, Wednesday, Thursday, and Friday settlement dates, creating frequent 0DTE opportunities. The specific expiration must be confirmed in the option chain and current exchange calendar, not assumed from a recurring pattern.

What is the difference between standard and weekly SPX options expiration?

The key operational difference is settlement timing. Standard SPX options use A.M. settlement, while SPX Weekly and End-of-Month options use P.M. settlement, according to Cboe specifications. Both are European-style and cash-settled, so exercise occurs only at expiration and the account receives a cash credit or debit rather than shares.

How do expiration dates affect 0DTE SPX trading?

A 0DTE contract expires on the trading day selected in the calendar, leaving no overnight time value after that session. Shorter time to expiration can make price movement, liquidity, spreads, and risk change quickly. Treat the calendar as a planning tool, not a prediction, and use defined risk, position discipline, and an exit plan.

Are SPX options cash-settled at expiration?

Yes. SPX index options are cash-settled, meaning expiration produces a cash credit or debit instead of delivery of S&P 500 shares. Cboe also identifies SPX options as European-style, which removes early assignment before expiration. Tax treatment can be different from equity options, so consult a qualified tax professional for your circumstances.

Ready to Observe the Live Trading Room?

A calendar is useful, but watching expiration-day decisions unfold can help connect schedule, settlement, and risk management concepts in real time. The SPXGODFATHER room is built around education, transparent execution, and developing independent judgment, not personalized investment advice or guaranteed results. Observe the live SPX 0DTE trading room with a free day pass and evaluate whether the format supports your learning goals. Options trading involves substantial risk and may not suit every trader.