Any time I've ever seen my Net Liq to be not around what I expect, it has always been from an unrealistic/erroneous quote.
That said, occasionally I receive email warnings from IB that say:
"Margin cushion: -100% remaining (UXXX)"
Even though I'm nowhere near over-leveraging my account. (I have portfolio margin with IB, and the most recent time I received this notice from them, my leverage ratio was only about 1.1) I think the most usual time I get this notice is on a Saturday following an assignment on an equity option position. I've called IB's risk management/margin dept to inquire about it, and they've told me my account is nowhere near being at risk of a margin call or a liquidation, but they still have no idea why I am getting these notices.
When it's all said and done, we live in an imperfect world with imperfect technology. Stuff that works 99.99% of the time to my satisfaction is a-ok with me, as long as things are eventually corrected for the 0.01% outliers. I am a software developer too, so I realize that in any moderate or severely complex software system, there will be bugs. If you take all the trade-offs of the low commissions and ease of placing orders into consideration, compared with the occasional technical hiccup, I think just about every trader alive today would agree that we have it pretty good... Far better than in years past.
That said, occasionally I receive email warnings from IB that say:
"Margin cushion: -100% remaining (UXXX)"
Even though I'm nowhere near over-leveraging my account. (I have portfolio margin with IB, and the most recent time I received this notice from them, my leverage ratio was only about 1.1) I think the most usual time I get this notice is on a Saturday following an assignment on an equity option position. I've called IB's risk management/margin dept to inquire about it, and they've told me my account is nowhere near being at risk of a margin call or a liquidation, but they still have no idea why I am getting these notices.
When it's all said and done, we live in an imperfect world with imperfect technology. Stuff that works 99.99% of the time to my satisfaction is a-ok with me, as long as things are eventually corrected for the 0.01% outliers. I am a software developer too, so I realize that in any moderate or severely complex software system, there will be bugs. If you take all the trade-offs of the low commissions and ease of placing orders into consideration, compared with the occasional technical hiccup, I think just about every trader alive today would agree that we have it pretty good... Far better than in years past.