stop_limit inconsistency with backtrader (stop_price = pricelimit vs. stop_price = price)

[mksqllc]

Hi there, I think there is an inconsistency between the implementation of backtrader StopLimit order and the alpaca-backtrader-api implemntation of Stop-Limits.

According to backtrader (https://www.backtrader.com/docu/order-creation-execution/order-creation-execution/#stoplimit):

• parameter price is the trigger price
• paremeter plimit is the limit price

For instance:

order = self.buy(exectype=Order.StopLimit, price=self.data.close[0] * 1.02, plimit=self.data.close[0] * 1.07)

But according to line 707 from here: https://github.com/alpacahq/alpaca-backtrader-api/blob/master/alpaca_backtrader_api/alpacastore.py:

if order.exectype in [bt.Order.StopLimit, bt.Order.Stop]: okwargs['stop_price'] = order.created.pricelimit

In other words, the limit price I give to backtrader is used as a trigger price in alpaca.

Please let me know if I missed something. Thanks.