Quote from luh3417:
I direct your attention to the "View... Account..." window of IB's TWS software. 1. In the prominently featured "Margin Requirements and Trading Limits" panel, do investors with large box spreads get any indication that they are running close to the edge? 2. In the "Portfolio" panel, would using the "Liquidate Last" feature have protected your spread? Or are all your contracts "Liquidate Last"... (I'm prepared to be wrong about these above questions, I don't trade box spreads so I just don't know).
I'd still like to hear an explanation, for the specific questions I raised a week ago, above.
Did you ever look at the "View Account" window before this problem started?
Did you use the "liquidate last" feature?
Can you tell us the exact positions you held? Did your entire account consist of one massive box spread maxed to the limit? What exactly did it say in the "Margin Requirements and Trading Limits" panel? Does that or does that not warn you (in the specific case of the box spread) that you are living on the edge?