For U.S. listed options, the main Friday dates to watch in October 2026 are October 2, 9, 16, 23, and 30. The 16th is the standard monthly expiration date because it is the third Friday of the month. Cboe’s current 2026 calendar identifies October 2, 9, 23, and 30 as Friday weekly expirations in its listed weekly series; the monthly date occupies October 16. October 30 is also the month’s final business day, so end-of-month (EOM) series may expire then where an exchange lists them. There is no standard quarterly expiration in October: quarterly options are tied to the end of March, June, September, and December.
That is a useful planning calendar, not a universal contract schedule. Different products can have Monday-through-Thursday expirations, daily index expirations, or a settlement date that differs from what a trader casually calls “expiration.” Always check the exact option symbol, expiration date, settlement type, and broker’s exercise cutoff before acting. The dates below are for U.S. exchange-listed options and are verified against Cboe’s 2026 calendar and OCC product specifications as of September 29, 2026.
| Date | Calendar role | What to verify |
|---|---|---|
| Friday, October 2 | Friday weekly expiration for eligible products | Confirm the underlying has a listed series for this date. |
| Friday, October 9 | Friday weekly expiration for eligible products | Check the product’s series and settlement details. |
| Friday, October 16 | Standard monthly expiration; third Friday | Some index products can have distinct AM- or PM-settled contracts. |
| Friday, October 23 | Friday weekly expiration for eligible products | Verify the exact listed contract in the option chain. |
| Friday, October 30 | Friday weekly and final business day of October; EOM series may also expire | Do not assume every ticker has an EOM contract or that all settlement methods match. |
These dates are Fridays, not a promise that every stock, ETF, or index offers every expiration. Cboe maintains a product-specific Available Weeklys list, and its 2026 options expiration calendar notes that dates can change. Use the exchange calendar to orient yourself, then use the live chain for the actual contract.
Weekly options are short-dated series listed for eligible underlyings. Many equity and ETF weeklies use Friday expirations, but the weekly label does not mean that every ticker has a contract for every Friday. Exchanges also list weekday expirations on selected index products. For example, Cboe’s SPX and XSP weekly program includes weekday series and excludes dates that coincide with the third Friday, end-of-month, or quarterly index expiration. Cboe also notes that VIX weekly options are typically settled on Wednesdays. These schedules are product-specific, so “weekly options expire Friday” is a useful starting point for many equity chains, not a complete rule for all U.S. options.
For October, Cboe’s Available Weeklys page, reflecting series available as of September 25, 2026, lists the Friday EOW dates October 2, 9, 23, and 30 for many weekly products. October 16 is handled as the standard monthly date rather than an additional Friday weekly date in that list. A trader using a daily-expiration index product may see other dates, including weekdays. Look at the expiration selector and contract details for the specific symbol.
Standard monthly equity options expire on the third Friday of their expiration month, according to OCC’s equity options specifications. In October 2026, that is Friday, October 16. The date on the contract is the important reference; a platform might show a Saturday convention or a different label in some contexts, while current standard U.S. equity option expiration is generally the Friday date.
“Monthly” describes the expiration cycle, not a guarantee that all products share identical trading hours or settlement mechanics. OCC explains that equity options are American-style and may be exercised on a business day through expiration, while index options can be American- or European-style and settle in cash. Settlement value calculation and timing vary by index contract. Those differences can matter as much as the date if you hold a position near expiration.
Quarterly options expire on the last business day of a financial quarter. OCC lists March, June, September, and December as quarterly expiration months. October is outside that cycle, so there is no standard October quarterly expiration. The most recent quarterly date before October 2026 is Wednesday, September 30; the next is Thursday, December 31, 2026, subject to the contract’s own listing and specifications.
Quarterly is a distinct series designation; it should not be inferred simply because a position is held for roughly three months. Also, a date being the last business day of a month does not by itself make it a quarterly expiration. October 30 is month-end, not quarter-end.
Expiration can affect assignment, exercise, settlement, and the time available for a position to respond to price changes. A standard listed equity contract usually represents 100 shares, although corporate actions can create adjusted contracts with different deliverables. Equity exercise may lead to stock delivery, while index options settle in cash. Do not assume that two options with the same date behave the same way.
Settlement style is especially important for index options. Some standard index options are AM-settled, while many weekly index options are PM-settled. An AM-settled contract may stop trading before the settlement value is calculated from opening prices; the resulting value can differ from the index level you see at the prior close. The relevant exchange’s contract specifications identify the last trading time and settlement method. OCC’s index options specifications caution that settlement values are derived differently across indexes.
For equity and ETF options, an in-the-money position near expiration can be exercised or assigned, creating a share position and capital requirements. A contract near the money can also move across its strike late in the session. Broker procedures for exercise instructions and contrary exercise notices may have earlier cutoffs than the exchange’s final trading time. Check the broker’s current expiration policy instead of relying on a general calendar.
A sound calendar check produces a specific answer: the date on the contract, when trading ends, how final value is determined, and what happens if the option is exercised or assigned. If any of those details are missing, switch from a broad monthly calendar to the product’s official specifications and your broker’s current policy. Calendars help organize dates; they cannot predict whether an option will finish in or out of the money, how a broker will handle a particular account, or what price a market will settle at.
Dates and listings can change. This article is general information, not a recommendation to buy or sell options.
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