On Nov 27 I started receiving order rejections with this message "the sum of the risk of the outstanding orders likely to execute is greater than the current allowable multiple of excess equity."
Presumably, IB has just started implementing a new account limit check. It is not very accurate. I enter a large number of LOC orders 1 minute before the LOC submission deadline. Perhaps 1 in 500 will execute. None of my open orders executed and my margin usage remained around 25%. Two of the rejected orders would have executed for about .1% of the account.
I understand the limit and always wondered why there wasn't one, but the algorithm is extraordinarily conservative. If they want to protect against a catastrophic event then just implement a hard limit based on legal margin usage. Even so most of the rejections were for shorts and I cannot imagine a catastrophic event that would force the market high enough to trigger all the orders necessary to drive my margin usage greater than 2x of my account in the last 15 minutes of the day.
Presumably, IB has just started implementing a new account limit check. It is not very accurate. I enter a large number of LOC orders 1 minute before the LOC submission deadline. Perhaps 1 in 500 will execute. None of my open orders executed and my margin usage remained around 25%. Two of the rejected orders would have executed for about .1% of the account.
I understand the limit and always wondered why there wasn't one, but the algorithm is extraordinarily conservative. If they want to protect against a catastrophic event then just implement a hard limit based on legal margin usage. Even so most of the rejections were for shorts and I cannot imagine a catastrophic event that would force the market high enough to trigger all the orders necessary to drive my margin usage greater than 2x of my account in the last 15 minutes of the day.