Quote from IBsoft:
1) Yes, the auto-liq software has the capability to use combinations/strategies.
2) We have various circuit-breakers that monitor (i) portfolio value and margin value jumps on the individual accounts level and system-wide level, as well as (ii) number of recent auto-liquidation trades, attempts, account deficits and similar. These breakers can suspend the auto-liquidation process. When that occurs, human review takes place.
3) We do not track the instances when TH takes the opposite side of a liquidated order. We do not know whether they amount to a profit, or a loss. The auto-liquidation trades represent a tiny fraction of the total number of trades IB executes a day.