OCC determines the assignment of options based upon a random process which is initiated only after the deadline for submitting all exercise instructions has ended. In order to avoid the delivery of a long or short underlying stock position when only the short leg of an option spread is in-the-money at expiration, the account holder would need to either close out that short position or consider exercising an at-the-money long option. If the short call leg of a covered write position is assigned, the long stock position will be applied to satisfy the stock delivery obligation on the short call.
The price at which that long stock position will be closed out is equal to the short call option strike price. There is no commissions charged as the result of the delivery of a long or short position resulting from option exercise or assignment of a U. You should review your positions prior to expiration to determine whether you have adequate equity in your account to exercise your options.
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You should also determine whether you have adequate equity in the account if an in-the-money short option position is assigned to your account. You should also be aware that short options positions may be exercised against you by the long holder even if the option is out-of-the-money. If you anticipate that you will be unable to meet the margin requirement on a stock delivery resulting from an option exercise or assignment, you should either close positions or deposit additional funds to your account to meet the anticipated post-delivery margin requirement.

To protect against these scenarios as expiration nears, IBKR will simulate the effect of expiration assuming plausible underlying price scenarios and evaluating the exposure of each account assuming stock delivery. If the exposure is deemed excessive, IBKR reserves the right to either:. In addition, the account may be restricted from opening new positions to prevent an increase in exposure. The effect of any after hours trading you conduct on that day may not be taken into account in this exposure calculation. IBKR is under no obligation to manage such risks for you.
How to Place Stop Losses on Option Spreads with Interactive Brokers | TRADEPRO Academy TM
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Understand how to trade margin on derivatives. Joined Feb 25, Posts 5, Reactions I haven't traded with IB, but have traded multiple marked to market instruments, with other brokers. Inappropriate order cancellations and futures positions liquidations did occur on a number of occasions outside of option market hours, primarily due to the optuons prices not reflecting changes in the corresponding futures market.
It was terribly inconvenient, very annoying and on one occasion in particular commenced a chain of events that proved quite costly.
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So your precautionary approach to this is certainly warranted. Click to expand Have enough funds Understand how to trade margin on derivatives.
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Tooth Faerie said:. I plan on holding enough of a cash and bond buffer to not get a margin call as this is the strategy I have read about but as a cautious person, I always want to be prepared for the worst. I don't want to panic if anything unforseen happens. I'm also just interested in the mechanics of margin calls of assets doing trade during the same hours.
Which broker do you use and do you recommend it over IB? In your case, did the broker just liquidate whichever instrument is open for trading at the time? Now I am sure you can imagine the problem this presents, when an almighty outside of hours whipsaw occurs, in the continousoy traded market. Joined Aug 10, Posts 2, Reactions You can select instruments to liquidate last, in the event of a margin call you will receive email notification or I take it a pushed message within the app , then you have a short period of time to close positions to bring margins within limits, if you don't close positions IB will auto close positions as required.
I personally select my options positions to liquidate last and leave my stock positions unchecked. Highly recommend you don't get into a position where auto liquidation occurs, can get ugly quickly. I really don't plan on getting into an auto liquidation situation but I just wanted to prepare for the worst case scenario.
What happens when you get a margin call for futures options when outside stock trading hours? Gringotts Bank. Joined Jun 30, Posts 6, Reactions Joined Jan 28, Posts Reactions In light of recent events IB have changed the rules - see other thread. They are now based here but SEGC still will not confirm.
I think I may try robin Hood ;-. Dona Ferentes Baron Samedi. Joined Jan 11, Posts 3, Reactions 3,
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