Chart Trader - adjusting size through order flag logic

[martyn73]

When adjusting an open limit order size through the Chart Trader flag, it appears that separate orders are created instead of updating the existing open order. Is there a specific reason for that?

When reducing the size again, it appears that Chart Trader loops through each open order, newest to oldest, and cancels each order until it get's to the correct orders size. And if the last open order is still greater than the provided quantity it will update that order with the requested quantity. Is this the correct logic used?

[NinjaTrader_ChrisL]

Hello martyn73, thanks for your post.

NT is designed to submit a new order for increasing quantity, thats just the design pattern we used. If you would like I can submit a feature request to add an option to modify the existing order. For stock trading, there is a setting in the Chart Trader properties that lets you pick to modify the preexisting order instead of submitting a new order for stocks if you are trading stocks.

Kind regards.

[martyn73]

Thanks, I just want to understand the logic being used. How about the logic I described when reducing size again. Is that correct?

[NinjaTrader_ChrisL]

Hi martyn73, thanks for your reply.

Yes, that is correct. E.g. if you have 1 quantity, increase it to 5, then decrease to 1 again, you will see the 4 contract order get canceled.

Kind regards.