How to Find Options With 30–45 DTE
DTE stands for days to expiration: how many calendar days are left before an option contract expires. Many swing traders who buy calls or puts look at the 30–45 DTE window because it balances cost against time decay for trades expected to last a few days to a few weeks.
Why 30–45 days
An option's time value shrinks as expiration approaches, and the shrinkage (theta decay) speeds up in the final weeks. That creates a trade-off:
| Expiration | Cost | Time decay | Fit for a 1–3 week swing |
|---|---|---|---|
| Weekly / under 14 DTE | Cheapest | Fastest; the clock is the enemy | Poor: small delays can wipe out the premium |
| 30–45 DTE | Moderate | Moderate | Good: room for the move, exit before decay accelerates |
| 90+ DTE | Most expensive | Slow | Workable, but more capital for the same move |
The idea is to buy enough time that the thesis can play out, then exit well before the last two or three weeks, when decay is steepest.
Finding them in an option chain
- Open the option chain for the stock and look at the list of expiration dates.
- Count calendar days from today to each date and pick the one that falls between 30 and 45 days. Standard monthly options expire on the third Friday of the month, so there's usually at least one in range.
- Choose calls for a bullish view, puts for a bearish one.
- Pick a strike. Near the money (at-the-money or roughly one strike out) is a common middle ground between cost and responsiveness.
What to check before choosing a contract
- Liquidity. Open interest in at least the hundreds and meaningful daily volume.
- Bid-ask spread. A wide spread is a hidden cost you pay on the way in and again on the way out. Tight spreads relative to the option's price are a sign of a healthy market.
- Implied volatility. If IV is unusually high, you're paying a lot for the option. That often happens before earnings, and it can drop sharply afterward (IV crush) even if the stock moves your way.
- Earnings date. Know whether an earnings report falls inside your holding period.
- Delta. Roughly how much the option moves for a $1 move in the stock. Near-the-money options usually have deltas around 0.4–0.6.
Risks to understand
A long call or put can lose its entire premium, even if the stock eventually moves in your direction, if the move comes too late or is too small. Options also carry risks that stocks don't, including time decay and volatility changes. Review the Options Disclosure Document from your broker before trading them.
How Zelos uses it
Options Scanner takes directional setups that clear Zelos's equity rules and expresses them as a single long call or put, using the 30–45 DTE window and a strike near the money. It never uses spreads, short options, 0DTE or weeklies, and it never places orders.
Frequently asked questions
What does DTE mean in options?
Days to expiration: the number of calendar days until the option contract expires.
Why not buy weekly options?
Weekly options are cheap but lose time value very quickly. For trades expected to take a week or more, small delays in the move can erase most of the premium.
When should I exit a 30–45 DTE option?
Many traders plan to exit on their target, their stop on the underlying, or with around 14–21 days left, whichever comes first, to avoid the steepest part of time decay. That is a common convention, not a rule.