US Trading Hours Extended? The October 2026 Change Explained

What Cboe actually launched

Cboe says select multi-listed equity and ETF options became available on its Cboe Options Exchange, also known as C1. The key word is options. You are dealing with an options contract linked to an underlying share or ETF, not an extended session for buying and selling every share itself.

The launch sessions are:

Cboe's 19 October 2026 announcement lists 24 single-stock underlyings and five ETFs for its extended-hours options launch.

Single stocks: AAPL, AMD, AMZN, AVGO, BABA, BAC, F, GOOG, GOOGL, HOOD, INTC, META, MRVL, MSFT, MU, NFLX, NOK, NVDA, ORCL, PFE, PLTR, SNDK, TSLA, TSM.

ETFs: GLD, IWM, QQQ, SPY, XLF.

Cboe says all option series for an underlying designated as GTH/Curb-eligible are available in those sessions. Whether you can trade them still depends on broker availability, your account's permissions and eligibility, and the rules in your jurisdiction.

The announcement date is 19 October 2026 in U.S. Eastern Time. When its 4:00–4:15 p.m. post-market window is converted to Malaysia time, it lands at 4:00–4:15 a.m. on 20 October. That is the Malaysia calendar date produced by the conversion, not a separate Malaysia-time launch date.

The Malaysia time conversion

At the 20 October factual cutoff, U.S. Eastern Time is on Eastern Daylight Time, UTC−4. Malaysian Standard Time is UTC+8, so Malaysia is 12 hours ahead for these windows.

These conversions use NIST's U.S. official time and Malaysia's Standard Time information from SIRIM. After the U.S. seasonal clock change, each Malaysia time moves one hour later. Check the date and time again when you are looking at a future session.

Shares still follow a different timetable

The Nasdaq Stock Market's trading-hours page lists the regular stock session as 9:30 a.m. to 4:00 p.m. ET. Cboe's new options windows do not change that regular session.

Nasdaq also lists existing stock extended-hours windows of 4:00–9:30 a.m. ET before the regular session and 4:00–8:00 p.m. ET after it. Broker access may differ. Those hours describe stock trading arrangements, so they should not be merged with Cboe's new options timetable.

Nasdaq's separate 23/5 equity plan

Nasdaq Trader says a new night session is expected to begin on Sunday, 6 December 2026, from 9:00 p.m. to 4:00 a.m. ET. It is designed to sit alongside the existing 4:00 a.m. to 8:00 p.m. day session, with an 8:00–9:00 p.m. ET pause. This is a planned equity session, not something that is live today. Cboe's announcement also describes a separate Cboe BZX 23/5 equities plan for 6 December, subject to industry readiness.

The Nasdaq Trader notice and the U.S. Federal Register notice describe that future structure. The SEC approval of the rule change does not mean every retail account is already able to use it.

What to check before relying on the new options window

Cboe says brokers in multiple countries offer or plan access. That statement does not confirm that a Malaysian customer or a particular Malaysian brokerage account is eligible. Ask your broker about the exact contract and session for your account and jurisdiction.

Check these details before treating the window as available to you:

1. Whether your broker offers extended-hours options trading, your account has the required permissions and eligibility, and access is permitted in your jurisdiction.
2. Which quotes are available, where they come from and which order types the session accepts.
3. Fees, exercise procedures and expiration handling for the contract.
4. The displayed bid–ask spread and how an order may be handled if there is little trading activity.

Nasdaq warns that extended stock markets can have lower liquidity and greater volatility. The SEC's Investor Bulletin on extended-hours trading lists stock extended-hours risks such as uncertain or unlinked prices, wider spreads, incomplete execution and different order-handling rules. Those references describe extended-hours stock trading. They are useful context for checking access and execution, but they are not a product-specific finding about Cboe's new options session.

The OCC disclosure document explains that options are contracts with their own characteristics and risks, not shares in the underlying company. Read the current disclosure and your broker's terms before making any decision. This article is education, not a trading recommendation.