Quote from Magna:
Sounds good in theory, not so clean-cut in practice. Do you pick? That is, let's say you're long. When you're first filled do you send out just a target limit order that resides on globex? Or how about just a stop-limit order that resides on globex? If so, then you're not covered if the market moves the other way, that is if just a target then you've got no stop, or vice versa if just a stop then you have no target. But if you send out both, that is a normal OCA pair, and if IB's server goes down then both your orders are sitting on Globex without the capability of self-cancelling when one gets hit since Globex doesn't know anything about OCA. This means, if you sent out a pair and one gets hit you're left stranded with the un-hit order still sitting there live. If the market reverses, as it often does, without IB's servers to cancel the other half of the pair you could easily be filled in the opposite direction when you thought you were out of the position. I don't know a good solution for this, but I didn't want to leave it out there that this was all so simple.
This is a very good point BUT I would like to believe that the reliability of the systems and connections between IB and Globex are much better than between IB and me. After all there are many more possible "breakpoints" between me and IB than between IB and the exchanges.
Gotta trade
TM trader
