They treat option order modifications like a cancellation and subsequent re-entry. Note though if the trade finally executes, you get (part of)...
When they talk about *mark*, they mean the mid-price. In earlier communication in the ticket, they refer to a "mark price of 0.143935 (based on...
@comintel: I had asked them in why they based their calculation on the mid-point of this crazy bid-and-ask spread rather than the extremely liquid...
@DeeDeeTwo: I should have said: "/sometimes/ merely based on bid and ask spreads" (namely, whenever there is no sufficiently frequent trading in...
I had read warnings on this board about IB's auto-liquidation policy before I opened and account with them, but hadn't taken them too seriously as...
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