When using ATM on a buy order, what is used by NT to trigger the order? Is it bid or ask?
I am using IB and its bid/ask trigger method is as the following (pasted from its web)
For a buy (sell) order to be triggered:
• A single bid (ask) price must be greater than (less than) or equal to the trigger price.
So it uses bid price to trigger a buy order.
Regards,
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