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Options 101
Day vs GTC Orders: Why Your 0DTE Order Dies at the Close
Time-in-force decides how long an unfilled order stays alive. On same-day options it's mostly academic — but knowing the difference keeps stale orders from surprising you.
NoVo Options Trading · 2026
Time-in-force is how long a working (unfilled) order remains active. The two you'll meet most are Day and GTC, and they answer one question: if my order doesn't fill, when does it die?
Day vs GTC
A Day order is good only for the current session — if it hasn't filled by the close, it's cancelled automatically. A GTC (“good-til-cancelled”) order keeps working across future sessions until it either fills or you cancel it (brokers usually cap it at 30–90 days). GTC is handy for resting orders at a level you might not reach today.
Why it's nearly moot on 0DTE
On a same-day option, the contract itself expires at the close, so a working order on it has nothing to be good for tomorrow — the instrument is gone. Practically, Day and GTC behave the same on a 0DTE: the order and the option both end their life at the bell. The distinction matters on longer-dated options, where a GTC entry can sit at a level for days.
On 0DTE, the option outliving your order isn't the issue — the option doesn't outlive the day at all.
The one thing to watch
The trap is a stale GTC order on a longer-dated position that you forgot about — it can fill days later at a price that no longer makes sense. If you use GTC, keep a list of what's resting. For same-day scalping, Day orders are the natural default, and your bracket/OCO exits handle the getting-out. Pair the right time-in-force with the right fill condition and your orders behave exactly as you intend.
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NoVo is a software tool for market analysis and for executing trades you initiate, not financial advice. This article is general education, not investment advice. Options trading involves substantial risk of loss, up to and including your entire capital. NoVo makes no guarantee of profit, win rate, or performance, and past results do not predict future outcomes. You are responsible for your own broker account, configuration, and trading decisions.