Allow changing side of position (long/short) in a single order

[jdreaver]

Hello!

I have some algorithms that are always in the market. They are either long or short 100% of the time. If I am currently long, I would like to be able to place a single order to liquidate my position and go short (and vice versa from short to long). Currently, if I try to do this I get the following error

insufficient qty available for order (requested: 2, available: 1)

On Slack, @umitanuki said

yes that’s correct and we are aware some other brokers allow to do so (and we discussed a LOT when designing the current one). there are also people who wants to avoid accidental overbuy/sell. Feel free to make a feature request and we keep refining

I understand some folks don't want to overbuy/sell, and I also see from #85 that some folks want even more error checking when it comes to situations like this. However, would it be possible to add an option to do no checking and to simply allow going from long to short or short to long in a single order?

Without this, I have to submit two orders when going e.g. short to long. I like to submit all of my orders in the morning, right before the market opens. That isn't possible currently if I switch the side of a position, and I have to wait until the market opens to get the second order in.

[piusthebiased]

i'd prefer a reverse api, or basically automatically liquidates and goes the opposite of what the previous position was

[pavan4810]

Yes, I am also looking for exactly same requirement. Should be able to change direction in single order/request. Really appreciate if you can provide this.

[bossdown123]

this is badly needed