Find if an open position is a losing position

[Trade Prophet]

Hello,
Is there a way to find if an open position is losing, when inside the Strategy next () method?
by losing I mean its PnL<0

Thank you.

[backtrader]

After much thinking, there is no direct method. It is possible, but if doesn't feel natural and will for sure be modeled in a better way.

The howto:

• Get the position for the data of your choice
• Get the commission info object which applies to that data
• Calculate the current profit and loss

In code

def next(self):
    pos = self.getposition(self.data)  # for the default data (aka self.data0 and aka self.datas[0])
    comminfo = self.broker.getcommissioninfo(self.data)
    pnl = comminfo.profitandloss(pos.size, pos.price, self.data.close[0])

[Trade Prophet]

Eventually, I saved the open price in a file and read it in next() method, easy...

[scottz1]

You could create a dictionary in strategy.init. In notify_order: order.completed, insert an item with either the symbol or order.ref as the key, and either the order object (to later retrieve size and price), or order.executed.price as the value.