What pin risk means
An option that finishes in the money at expiration is normally exercised automatically. One that finishes out of the money normally expires worthless. Pin risk is the gray zone between those two outcomes: the stock closes at, or within a few cents of, a short strike, and the seller of that option cannot know which way it will go.
The decision is not the seller’s to make. The holder of the option decides whether to exercise, and exercise notices are processed after the closing bell. A holder can act on an after-hours move or a news item the seller never sees. The seller finds out only when an assignment, or no assignment, appears in the account the next morning.
Why a defined risk spread is still exposed
An iron condor pairs each short option with a long option further out, and for the life of the trade that long option caps the loss. On expiration day that protection has a gap.
If the stock finishes between the short strike and the long strike, the short leg is assigned and the long leg expires worthless. The trader now holds long or short shares with full overnight exposure, and the option that was supposed to limit the loss no longer exists. A position that was defined risk all week is undefined risk for one weekend, and the trader did not choose it.
Cash settled index options such as SPX do not carry pin risk, because settlement is in cash and no shares change hands. Equity and ETF options settle in shares, and that is where the problem lives.
The standard advice, and why it fails in practice
Most options education says the same thing: close short options before expiration instead of hoping they expire worthless. The advice is sound. The failure is in execution. A trader with a dozen positions across several expirations has to remember which ones expire this week, watch each one into the afternoon, and place the closing orders while the market is moving. The one position that gets missed is the one that closes at the strike.
ACondor builds the advice into rules that run on every position, every cycle, without anyone having to remember.
Rule one: close at 21 days to expiration
Mechanical iron condors are closed at 21 days to expiration regardless of where the trade stands. The reasoning is older than pin risk. Past that point a position trades shrinking daily theta for rising gamma, which is a bad swap for a premium seller. Expiration day is the extreme case of that swap. A position that is closed three weeks early never sees the gray zone at all.
Rule two: flatten on expiration day after 1:00 PM Eastern
Some positions are still open on expiration day: contraction engine trades that enter short dated, earnings trades, or a condor that was rolled. For any of them, the software closes the whole position after 1:00 PM Eastern, regardless of where the trade stands. Winners are closed as well as losers.
The afternoon timing is deliberate. Waiting until 1:00 PM lets the morning’s time decay accrue, and closing fees on tastytrade are small enough that buying the position back costs less than the risk of holding it through the close. A position that is already a winner within about one day of expiration is pulled early for the same reason; there is nothing left to collect that justifies the last day.
Rule three: pull short options that have run out of time value
Assignment can also arrive before expiration day. A short option is unlikely to be assigned early while it still carries extrinsic value, because exercising means the holder gives that value up. As the option goes deeper in the money or closer to expiration, the extrinsic value shrinks toward zero and the risk rises.
ACondor measures the extrinsic value of every short leg that is in the money. When it falls to ten cents a share or less, the position is closed before an assignment can happen. A separate check watches short calls near an ex-dividend date. If the dividend is larger than the call’s remaining time value, the holder has a reason to exercise, and the position is pulled the same way.
Closes that have to fill
A close placed to avoid assignment is not useful if it sits unfilled. The software treats these as must-fill orders: it submits at the mid price and walks the order one tick toward the market every thirty seconds until it fills, inside a bound that keeps it from chasing a broken quote. If an assignment arrives anyway, the software is designed to detect the resulting share position from the broker’s records and close the shares and any remaining option legs together as one cleanup.
Every close is recorded with its real reason. A trade history shows “expiry flatten” or “assignment risk,” not a generic exit label, so a trader can see weeks later exactly why a position left the book. The broader approach to defending open positions is described at https://acondor.com/blog/how-acondor-defends-options-trades-under-pressure
What these rules do and do not do
Closing before expiration removes pin risk from a position. It does not remove the loss a position may already carry, and it does not make any trade more likely to work. ACondor is software, not investment advice. Nothing here is a guarantee of any trading result, and options trading carries substantial risk of loss.
Next step
Traders who want the 21 day close, the expiration day flatten, and the assignment check enforced automatically in a tastytrade account can request early access at https://acondor.com/early-access
ACondor LLC
+1 575 312 9326
2521 North Main Street, Las Cruces
Unit 1-276
Las Cruces
New Mexico
88001
United States
