Hold to expiry

Definition

Hold-to-expiry is the null management rule: the position runs to its terminal date and settles by contract mechanics — exercise, assignment, or cash settlement. It is a real strategy choice, not an absence of one: it maximizes premium capture (for short options) and eliminates exit friction, in exchange for full exposure to the expiry zone’s mechanics and steepening gamma.

How it works / structure

• Parameters (engine-executable): none beyond the position itself — which is the point; the engine models settlement per contract (ms-settlement): cash-settled index options resolve to a number; physical options resolve to positions (mgmt-assignment-handling takes over).
• What it captures: the final segment of theta that early exits surrender; the exact terminal payoff diagram every strategy entry draws.
• What it accepts: the last week’s gamma concentration (greek-gamma), pin risk at strikes, after-hours moves between the final print and settlement determination (ms-expiration-exercise-assignment), and for futures, delivery obligations past first notice.

When it applies

Defined-risk structures whose maximum loss is pre-accepted (the expiry zone cannot make an iron condor lose more than its width); cash-settled instruments where terminal mechanics are clean; deep-OTM short options with negligible remaining value where exit friction exceeds the residual risk premium — measured, not assumed.

Risk profile & failure modes

• Gamma cliff: near-the-money positions in the final days swing between full-win and full-loss on small underlying moves; hold-to-expiry converts a probabilistic position into a coin at the strike.
• Pin and after-hours assignment: physical settlement decisions are made after the close on expiration day; a post-close move can flip exercise decisions against the holder (documented mechanics — OCC exercise-by-exception thresholds).
• “Almost worthless” tail: shorts held for the last cents carry the position’s full notional risk for days to collect pennies — the risk/reward inverts precisely at the end.
• Futures delivery: equity traders treating futures like options discover first-notice dates the expensive way (instrument-futures-contract).

Evidence & limits

Settlement mechanics are contract rules (OCC; exchange specs). Empirical comparisons of hold-to-expiry vs early management for short premium are practitioner-published (managed-early studies by options-education firms) and not peer-reviewed — the platform treats the trade-off as a replay question per strategy (mgmt-profit-target cites the same gap). What is structural: expiry-week gamma is larger, and friction saved is real.

Falsifiable-thesis examples

Illustrations only, not signals:

• “Holding this iron condor to expiry rather than closing at 21 DTE will produce a better outcome in this cycle” — falsified by the paired comparison at settlement.
• “The short 0.05-delta call, held the final week, will expire worthless” — falsified by an in-the-money finish.

Cross-references

• The alternatives: mgmt-profit-target, mgmt-time-based-exit, mgmt-rolling
• Terminal mechanics: ms-expiration-exercise-assignment, ms-settlement, mgmt-assignment-handling
• The hazard: greek-gamma, pin risk (glossary)