Choosing an Expiry
How option term changes commitment, reset frequency, time value and operational exposure.
#Term is part of the risk
Expiry defines how long upside is capped, how long capital remains committed under the position rules and when terminal settlement occurs. It also changes option time value and sensitivity to volatility.
| Example term | Reset frequency | Typical considerations |
|---|---|---|
| 7D | Frequent | More decisions and execution events; short time horizon; concentrated gap risk around expiry. |
| 30D | Monthly-style | Longer commitment with fewer resets; different time-value profile. |
| 90D | Infrequent | Longer upside cap and exposure to more events; greater total time value is possible. |
#Shorter versus longer
Shorter options may lose time value rapidly near expiry, but the seller must repeatedly find liquidity and reset terms. Longer options reduce reset frequency but bind the strike for longer, so an early rally can create sustained opportunity cost.
Premium should not be compared across terms without normalizing carefully. Annualizing a one-week premium assumes repeatable future trades at comparable prices and ignores compounding, gaps, costs and changing volatility.
#Term specification
- Exact expiry timestamp and time zone.
- Price observation window or settlement state.
- Behavior during market closure, halt or chain disruption.
- Whether early exit, transfer or roll is supported.
- How corporate actions between creation and expiry are handled.