Today at 09:35:14, onpositionupdate reported a position for CENT of -700, which was in line with what IB TWS was showing. 25 seconds later, after my strategy had shorted another 75 stocks according to TWS, onpositionupdated reported CENT -1700, which had the effects you can imagine on a strategy that depends on its position to generate signals.
The NT positions tab did have the same position as TWS at that time.
I am happy to provide the trace file per email as well as a IB audit trail if it can help.
Thanks
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