Overfill question

[misova]

I know, that when order is filled during cancellation request,
we get order-state Rejected with OverFill == true.

I understand, that this happens, when all contracts are filled.
But what happens, if not all contracts are filled? ie.only partial fill occured

Problem scenario
Imaging we have order with quantity of 100 contracts and we sent cancellation request.

• 50 contracts were filled
• and remaining 50 contracts were cancelled.

This scenario is something in between - there is partial cancel and partial overfill:

• cancellation was partially successful (50cts over-filled, but other 50cts were successfully cancelled.
• overfill was also partial - not whole order-quantity was filled - only 50cts

Question

1. What will be the resulting order-state now? Rejected or Cancelled ?
2. Will be OverFill == true also?

[NinjaTrader_Jesse]

Hello,

Thank you for the question.

This would still be considered an overfill even though it is a partial fill, please see this document in the help guide: http://ninjatrader.com/support/helpG...reoverfill.htm

In the note about overfills it shows: An overfill is categorized as when an order returns a "Filled" or "PartFilled" state after the order was already marked for cancellation.

This would be the same as a standard Filled overfill in this case because the order was marked for cancel.

Please let me know if I may be of further assistance.

[misova]

Thank you for answer.
Now I am not sure about the Rejected state after your answer.

You mentioned: overfill condition can be detected in both cases - when order is fully filled or only partial filled (when cancellation was sent before that).
Now, I am not sure, where is the role of OrderState.Rejected in context of these overfillls.

I feel there is possible mismatch in meaning of "filled" in context like "fully filled order" vs "order in state OrderState.Filled"

So I will ask very specifically:

1. In case overfill is detected with full fill of the order - what will be value of OrderState? Filled or Rejected? (I assume Filled according to latest knowledge)
2. In case overfill is detected with partial fill order, what will be value of OrderState? PartFilled or Rejected? (I assume PartFilled according to latest knowledge)

[NinjaTrader_Jesse]

Hello,

In both cases, the order would report overfill = true and would be filled or part filled depending on what had occurred. Overfills can occur without rejections so the state can vary, NinjaTraders internal logic detects the overfill when it occurs but the order would only be marked as rejected only if it was rejected and is reported that way by the broker.

I look forward to being of further assistance.