Quote from Specterx:
I'm sorry for your loss, but stories like this reassure me that IB is on top of things, that my money is safe there, and that I'm not exposed to the risks of other customers trading with excessive leverage and/or in illiquid markets subject to black swans.
I used to believe this, but no longer for one very simple reason. I'm relatively convinced that the first "flash crash" was an opening act and that when it does occur again, it will probably be more intense and more chaotic.
So what exactly happens when even the most liquid names are bid .001, even if its only temporary, you damn well know that the auto-liquidation will not know that and scores of customers will be wiped out. The fact that a customer can have excess margin in the moments leading up to such an event, by no means ensures that after they are liquidated, they will even be solvent, more likely debit balances.
I think quite a few others share this opinion who were formerly quite happy with the notion of auto liquidations prior to HFT and perpetual flash crashes (just not widespread like in May).