Subtract exit quantity from signal quantity

This feature is useful when you are both exiting a position and entering a new position on the other side in one signal. It can only be used when Allowed sides is set to Both. It allows you to send a quantity that will both exit your open position and enter a new position. For example, if you have an open bullish long position on AAPL with a quantity of 10 and you want to go short 5 shares, with this feature checked, you can do the following:

Example: If you're long 5 and send a sell for 10, we'll exit your 5-long and then enter a short for the remaining 5 (instead of shorting the full 10).

When to use it:

• You want the size of your reversals to match exactly what's left after exiting your existing position.
• You scale in or out of trades, and you want the reversal size to reflect the net difference after exiting your current position.