Trailing Stop Loss Order - Quantconnect - BootCamp

stop_loss.py

class BootCampTask(QCAlgorithm):
    
    # Order ticket for our stop order, Datetime when stop order was last hit
    stopMarketTicket = None
    stopMarketOrderFillTime = datetime.min
    highestSPYPrice = -1
    
    def Initialize(self):
        self.SetStartDate(2018, 12, 1)
        self.SetEndDate(2018, 12, 10)
        self.SetCash(100000)
        spy = self.AddEquity("SPY", Resolution.Daily)
        spy.SetDataNormalizationMode(DataNormalizationMode.Raw)
        
    def OnData(self, data):
        
        # 1. Plot the current SPY price to "Data Chart" on series "Asset Price"
        self.Plot("Levels", "Asset Price", self.Securities["SPY"].Price)
        self.Plot("Levels", "Stop Price",  self.Securities["SPY"].Price * 0.9)

        if (self.Time - self.stopMarketOrderFillTime).days < 15:
            return

        if not self.Portfolio.Invested:
            self.MarketOrder("SPY", 500)
            self.stopMarketTicket = self.StopMarketOrder("SPY", -500, 0.9 * self.Securities["SPY"].Close)
        
        else:
            
            #2. Plot the moving stop price on "Data Chart" with "Stop Price" series name
            
            if self.Securities["SPY"].Close > self.highestSPYPrice:
                
                self.highestSPYPrice = self.Securities["SPY"].Close
                updateFields = UpdateOrderFields()
                updateFields.StopPrice = self.highestSPYPrice * 0.9
                self.stopMarketTicket.Update(updateFields) 
            
    def OnOrderEvent(self, orderEvent):
        
        if orderEvent.Status != OrderStatus.Filled:
            return
        
        if self.stopMarketTicket is not None and self.stopMarketTicket.OrderId == orderEvent.OrderId: 
            self.stopMarketOrderFillTime = self.Time