Nasdaq ISE has filed a proposed rule change (File No. SR-ISE-2026-22) that would expand when AM-settled Nasdaq-100 Index (NDX) options can appear on the calendar. This is not a launch announcement. As of May 22, 2026, it should be treated as pending SEC rulemaking, with a public comment deadline of May 29, 2026.
For options traders, the headline is less about “more expirations” and more about which clock the contract uses. AM settlement shifts the critical risk window away from the close and into the next morning’s opening-price settlement sequence.
What is proposed (confirmed)
Based on the SEC notice (Release No. 34-105365) describing SR-ISE-2026-22, ISE proposes to permit listing:
- AM-settled NDX weeklies on Monday through Friday, excluding standard third-Friday expirations and dates that coincide with an end-of-month expiration; and
- AM-settled end-of-month NDX expirations.
The framing is additive: the proposal describes these as additional choices and does not present them as removing existing PM-settled NDX weekly or end-of-month expirations.
The real hook: AM settlement is an opening-sequence settlement
Many traders mentally translate “expires Friday” into “risk ends at the close.” That shorthand can work for PM-settled products, but it breaks down for AM-settled index options.
For AM-settled index options under ISE rules:
- The last trading day is generally the business day before expiration.
- The final settlement value is determined from the official opening prices of the index constituents on expiration day.
- The settlement value is not simply “the index at 9:30 a.m.” because constituents do not all establish official opening prices at the same instant.
Operationally, that means an AM-settled Friday series can stop trading on Thursday afternoon, yet still carry meaningful, unresolved settlement exposure into Friday’s opening process.
NDX vs NDXP vs XND vs QQQ: similar exposure, different mechanics
This proposal is also an education moment because different Nasdaq-100-linked products can look interchangeable on a quote screen while behaving very differently around expiration.
NDX (index option)
NDX is a cash-settled index option and is generally European-style exercise (no early exercise). The key distinction for this filing is the settlement clock: AM-settled NDX expirations resolve to an opening-price-derived settlement value, with trading typically ending the prior business day.
For background on exercise style and settlement, see:
NDXP (index option, different settlement clock)
NDXP is designed to provide PM-settled Nasdaq-100 index option expirations. In plain English: an NDXP expiration is about the move into the close, while an AM-settled NDX expiration is about the overnight gap and the opening process.
If the proposal is approved, traders may see more dates where “the same calendar day” can still mean two different instruments: one settling off the open and one settling off the close.
XND (micro index option)
XND references a scaled Nasdaq-100 micro index (commonly described as 1/100th of NDX). It is also an index option structure (cash-settled, generally European-style). Its presence mostly matters here because it adds another symbol that can be confused with NDX/NDXP when traders are moving quickly.
QQQ (ETF option)
QQQ options are ETF options, not index options. They commonly sit in the American-style equity/ETF options framework, where early exercise and assignment mechanics can matter. That does not make QQQ “better” or “worse” for expressing Nasdaq-100 exposure, but it does mean you should not assume the expiration mechanics match NDX/NDXP.
If you need a refresher on the operational side, see:
Why this matters for options traders (interpretation, not a forecast)
Nothing about this filing is a directional signal for the Nasdaq-100. The market-structure relevance is that it creates more listed ways to separate risk by time window.
1) “Expected move” depends on the settlement window
Short-dated options are often discussed in “expected move” terms, but the premium you see is always conditional on what the contract is actually measuring.
If two contracts share a calendar expiration date but settle on different clocks:
- The AM-settled contract is mainly pricing the overnight-to-open outcome (including the opening process).
- The PM-settled contract is pricing the full session into the close.
So two “Friday expirations” can legitimately embed different implied distributions and different short-dated premiums without one being “wrong.” If you want a baseline primer on how option premiums relate to implied volatility and expected move framing, start with the site’s implied volatility guide.
2) Same-date AM vs PM spreads become more natural (and easier to misunderstand)
When two expirations share a date but settle at different times, spreads between them are less about classic “one week vs the next week” term structure and more about a settlement-basis distinction (“open window vs close window”). That can be useful to sophisticated hedgers, but it also increases the odds that someone trades the right date with the wrong clock.
3) More choice can help, but it can also add complexity and fragmentation risk
An expanded expiration menu can improve precision for traders who want opening-sequence settlement exposure. At the same time, adding series can increase the “complexity tax” (more symbols, more near-neighbor expirations) and can fragment liquidity across a broader shelf of contracts, especially early in adoption.
Common misunderstandings to avoid
- “AM-settled means it settles to the prior close.” No. AM-settled index options settle based on the opening prices of constituents on expiration day.
- “If it expires Friday, I can trade it Friday morning.” Not for typical AM-settled index options: the last trading day is generally the business day before expiration.
- “The settlement value is just the 9:30 index print.” Not necessarily. Opening-price settlement is an opening-sequence process across constituents, not a single timestamp.
- “NDXP and QQQ are close enough.” They can be similar exposure, but their mechanics (settlement clock, exercise style, assignment risk) can be very different.
- “Cash-settled means there is nothing to manage at expiration.” Cash settlement avoids stock delivery, but it does not remove settlement-window risk or operational deadlines.
Practical checklist (not advice)
This is not a trade plan. It is basic operational hygiene for products where settlement style is the main event:
- Confirm the contract is AM-settled vs PM-settled on your platform (do not infer it from the date).
- Verify the last trading day/time for the specific series you are trading.
- Avoid assuming you can “adjust Friday morning” for an AM-settled Friday expiration.
- If you are comparing premiums across same-date expirations, make sure you are comparing the same settlement window.
- Review your broker’s exercise/expiration policies, especially cutoffs and any risk-desk procedures.
Important notes (not advice + options risk)
This article is for general market-structure education only and is not financial advice, investment advice, trading advice, or a recommendation to buy or sell anything.
Options trading involves risk and is not suitable for all investors. Short-dated index options can be especially risky due to rapid P/L changes, high gamma exposure, and gap risk. Read the site’s risk disclosure before trading.
Sources
SEC notice (Release No. 34-105365; SR-ISE-2026-22): https://www.sec.gov/files/rules/sro/ise/2026/34-105365.pdf (primary regulatory description of the proposal and procedural status).
SEC rulemaking page for SR-ISE-2026-22: https://www.sec.gov/rules-regulations/self-regulatory-organization-rulemaking/sr-ise-2026-22 (comment deadline and filing metadata).
Nasdaq ISE Options 4A rulebook: https://listingcenter.nasdaq.com/rulebook/ise/rules/ISE Options 4A https://listingcenter.nasdaq.com/rulebook/ise/rules/ISE%20Options%204A (definitions for AM vs PM settlement and last trading day conventions).
Nasdaq NDX/NDXP factsheet: https://www.nasdaq.com/NDX_NDXP_Factsheet (product labels and settlement-clock mapping used for trader-facing explanation).
Nasdaq index settlement value methodology: https://indexes.nasdaqomx.com/docs/SettlementValueGIW.pdf (why opening-price settlement can differ from a simple 9:30 print or prior close).
OCC index options overview: https://www.theocc.com/clearance-and-settlement/clearing/index-options (cash settlement context for index options).
