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A bad fill is not automatically a reversible error16 minute read
Can an option trade be reversed? Obvious error rules
Learn when a filled option trade may be adjusted or nullified under obvious and catastrophic error rules, how deadlines, theoretical prices, customer limits, and complex legs matter.
Direct answer
A filled option trade is normally binding and cannot be canceled like a working order. An exchange may adjust the execution price or nullify the trade only when its rules and filing procedures permit relief, such as an objective obvious error, a larger catastrophic error, certain system malfunctions, or an allowed mutual agreement. Entering the wrong symbol, disliking the price, or losing money after the market moves does not by itself qualify.
Intent is not the test for an obvious error
Exchange rules compare an execution with a defined theoretical price or market reference and require a minimum price difference that varies with the option's price and circumstances. An erroneous buy is generally one executed excessively high; an erroneous sell is excessively low. Wider-market, opening, halt, zero-bid, complex, and system-event provisions can alter the test.
A fat-finger order can still stand if its execution does not meet the rule. Conversely, a qualifying price can be reviewed even though the order was intentionally submitted. The exchange official applies the rule to the trade record; the trader's regret is not the measurement.
Adjustment and nullification produce different outcomes
An adjustment changes the binding execution to a rule-calculated price. Nullification removes the transaction. Under current Nasdaq options guidance, a customer-involved obvious error is generally adjusted, but it is nullified if the adjusted price would violate the customer's limit. Treatment depends on the executing exchange and applicable rule.
Catastrophic error provisions use larger deviations and can provide a separate review path, often resulting in adjustment rather than a free cancellation. A trade can be terrible without crossing either threshold. Do not describe error rules as insurance against market orders, wide spreads, or stale analysis.
The filing clock can be extremely short
Contact the broker immediately with order ID, execution time, contract, side, quantity, price, expected market reference, and reason for review. The broker or exchange member normally submits the formal request to the venue that executed the trade. Deadlines differ by customer status, event, and exchange and may be measured in minutes.
An app support ticket or cancellation request is not necessarily an obvious-error filing. Ask whether the review was filed, which exchange has jurisdiction, what deadline applies, and when a ruling is expected. Preserve confirmations, quote snapshots, executions, and communications.
Manage the position while the ruling is uncertain
Until an exchange rules, the account may show a live position and associated buying-power, exercise, assignment, and market risk. Closing or hedging it can reduce one risk, but if the original trade is later adjusted or nullified, that new transaction remains and can create a different exposure. Doing nothing also leaves market risk.
Coordinate interim action with the broker and size it from confirmed positions. For a complex order, a qualifying leg can affect the complete package under venue rules; do not assume only the visibly extreme leg will disappear. After the decision, reconcile every leg, cash movement, fee, position, and tax lot before trading again.
Common questions
Can my broker cancel an option trade after it fills?
The broker cannot simply cancel a valid exchange execution on request. It can help submit a timely review to the executing exchange, which decides whether its obvious-error, catastrophic-error, malfunction, or mutual-agreement provisions apply. If no rule authorizes relief, the trade remains.
What qualifies as an obvious option error?
The exchange compares the execution with a rule-defined theoretical price or other reference and applies specified deviation and event tests. Exact thresholds vary by price band and provision. Choosing the wrong contract or receiving an unexpectedly poor fill is not enough unless the objective rule is satisfied.
How quickly must an option error be reported?
Potentially within minutes. Customer and non-customer windows, linkage transactions, catastrophic reviews, and system events can have different deadlines. Contact the broker immediately and confirm a formal venue filing rather than assuming an ordinary support message preserves the right to review.
What happens to a multi-leg option trade if one leg is erroneous?
Venue rules determine whether an affected leg is adjusted and the package remains, or whether nullification of one leg requires nullification of the entire complex execution. The net limit can also protect a customer from an impermissible adjusted result. Reconcile the whole strategy only after the final ruling.
Sources and further reading
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