What Order Types Can Be Used in the 24-Hour Market?

The 24-Hour Market's extended sessions — Overnight, Pre-Market, and Post-Market — accept Limit Orders only. Market Orders, Stop Orders, and Stop-Limit Orders are not available in them, and neither are Stop Loss and Take Profit Exit Strategy orders. That restriction is deliberate: setting a limit price is what protects you from the wider spreads and lower liquidity that come with trading outside standard exchange hours, where a Market Order could fill at a price far from what you expected. Once trading moves into the Regular Market session embedded inside the same weekly window, all four order types work exactly as they do on any ordinary trading day, and Stop Loss and Take Profit become available again. So the answer depends entirely on which session you are in, rather than on the stock you chose or how you placed the order.

• Extended sessions: Overnight, Pre-Market, and Post-Market accept Limit Orders only
• Not available in the extended sessions: Market Orders, Stop Orders, Stop-Limit Orders, and Stop Loss or Take Profit
• Why Limit only: a limit price protects you from the wider spreads and lower liquidity of trading outside standard hours
• Regular Market session: all four order types work exactly as they do on any ordinary trading day
• Exit Strategy: Stop Loss and Take Profit become available again once the Regular Market session opens
• What decides it: the session you are trading in, not the stock or the way the order was placed

Related questions:

Q: Why can I only place Limit Orders in the extended sessions?
Because the extended sessions have fewer participants and lower trading volume than the Regular Market, which widens the gap between bid and ask prices. A Market Order in that environment would take whatever price is available and could fill far from where you expected. Requiring a limit price means you always define the worst price you are willing to accept.

Q: Can I place a Stop Loss or Take Profit through the 24-Hour Market?
No. Exit Strategy orders are confined to the Regular Market session, even though those hours sit inside the wider 24-Hour Market weekly window. The OCO mechanism behind Stop Loss and Take Profit relies on the deeper liquidity of Regular Market hours to trigger and execute reliably, which the thinner extended sessions cannot consistently support for you. If you need those levels, place the order during Regular Market hours instead.

Q: Which order types work during the Regular Market session inside the 24-Hour Market window?
All of them. Market, Limit, Stop, and Stop-Limit Orders are all accepted, with either DAY or GTC validity, exactly as they would be on any normal trading day. The Regular Market session is simply the familiar trading window sitting between the Pre-Market and Post-Market extended sessions in the wider weekly cycle. Nothing about that session changes because the extended sessions exist around it.

Q: Does the order type I can use depend on the stock?
No, it depends on the session. Any eligible stock traded in an extended session is restricted to Limit Orders, and any stock traded during the Regular Market session has the full order menu available. What the stock does determine is whether it can be traded in the extended sessions at all, which requires the "24" marking. Without that marking, the stock is limited to Regular Market hours.