what is the purpose for IB to penalize orders with direct exchange destination?

d08: interesting never had that happen... usually everything fills within 600ms

I periodically have my backend send WhatIf api requests and that also appears to keep their risk management speedy
 
SPYAlgoTrader said:
d08: interesting never had that happen... usually everything fills within 600ms

I periodically have my backend send WhatIf api requests and that also appears to keep their risk management speedy
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So it would mean some of the margin information is buffered? Never thought that could happen. I've noticed better fills recently using far out limits. How ironic that the best market order is a limit.
 
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