how do OCO groups and ATM functionality work in IBKR compared to TDA? does IBKR alllow ninja to use some form of tick charts from their data? i know tda does not.
  1. When submitting orders within an OCO group, the orders must be submitted as a pair and after submission, those orders will no longer be modifiable. To make a change to an OCO grouped order it must be cancelled and resubmitted. ATM functionality which would modify submitted stops and targets on TD Ameritrade accounts are therefore not supported.
  2. TD Ameritrade supports changing the order type of an active order. This is not a common practice. NinjaTrader does not support this feature.
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