O Bebê Abandonado de Baixa espelha a versão de alta, mas sinaliza um possível topo.
Apresenta um doji com gap de alta seguido de um gap de baixa, deixando a vela do meio isolada acima do intervalo anterior.
Os testes indicam um retorno anual médio de aproximadamente 79%. Funciona melhor no mercado de ações.
A estratégia vende a descoberto quando a terceira vela abre em gap abaixo do doji, visando lucrar com a mudança abrupta de sentimento.
O risco é limitado com um stop logo acima da máxima do doji, caso o preço se recupere.
Detalhes
Critérios de entrada: correspondência de padrão
Comprado/Vendido: Ambos
Critérios de saída: stop-loss ou sinal oposto
Stops: Sim, baseado em percentual
Valores padrão:
CandleType = 15 minute
DojiBodyPercent = 10
StopLossPercent = 2
O mercado negocia 24 horas, então as faixas das velas quase nunca deixam gaps (o mês de exemplo tem no máximo um padrão de baixa assim); os gaps são medidos entre os corpos das velas. O corpo do doji é no máximo DojiBodyPercent da sua faixa. A estratégia só vende, no fechamento da terceira vela; o stop fica StopLossPercent acima da máxima do doji e a posição fecha quando uma vela fecha acima dele.
Filtros:
Categoria: Padrão
Direção: Ambos
Indicadores: Candlestick
Stops: Sim
Complexidade: Intermediário
Período: Intradiário
Sazonalidade: Não
Redes neurais: Não
Divergência: Não
Nível de risco: Médio
using System;
using System.Collections.Generic;
using Ecng.Common;
using StockSharp.Algo.Indicators;
using StockSharp.Algo.Strategies;
using StockSharp.BusinessEntities;
using StockSharp.Messages;
namespace StockSharp.Samples.Strategies;
/// <summary>
/// Bearish Abandoned Baby strategy.
/// While flat it sells after a bullish candle, a doji whose body gaps above the first body, and a bearish candle whose body gaps below the doji.
/// The stop lies StopLossPercent above the doji's high, and a close beyond it closes the position.
/// </summary>
public class BearishAbandonedBabyStrategy : Strategy
{
private readonly StrategyParam<decimal> _dojiBodyPercent;
private readonly StrategyParam<decimal> _stopLossPercent;
private readonly StrategyParam<DataType> _candleType;
private readonly List<ICandleMessage> _candles = [];
private decimal _stopPrice;
/// <summary>
/// Largest body of the doji, in percent of its range.
/// </summary>
public decimal DojiBodyPercent
{
get => _dojiBodyPercent.Value;
set => _dojiBodyPercent.Value = value;
}
/// <summary>
/// Distance of the stop beyond the pattern, in percent.
/// </summary>
public decimal StopLossPercent
{
get => _stopLossPercent.Value;
set => _stopLossPercent.Value = value;
}
/// <summary>
/// Candle type.
/// </summary>
public DataType CandleType
{
get => _candleType.Value;
set => _candleType.Value = value;
}
/// <summary>
/// Constructor.
/// </summary>
public BearishAbandonedBabyStrategy()
{
_dojiBodyPercent = Param(nameof(DojiBodyPercent), 10m)
.SetNotNegative()
.SetDisplay("Doji Body %", "Largest body of the doji, in percent of its range", "Pattern");
_stopLossPercent = Param(nameof(StopLossPercent), 2m)
.SetNotNegative()
.SetDisplay("Stop Loss %", "Distance of the stop beyond the pattern, in percent", "Risk");
_candleType = Param(nameof(CandleType), TimeSpan.FromMinutes(15).TimeFrame())
.SetDisplay("Candle Type", "Type of candles to use", "General");
}
/// <inheritdoc />
public override IEnumerable<(Security sec, DataType dt)> GetWorkingSecurities()
{
return [(Security, CandleType)];
}
/// <inheritdoc />
protected override void OnReseted()
{
base.OnReseted();
_candles.Clear();
_stopPrice = default;
}
/// <inheritdoc />
protected override void OnStarted2(DateTime time)
{
base.OnStarted2(time);
_candles.Clear();
_stopPrice = default;
var subscription = SubscribeCandles(CandleType);
subscription
.Bind(ProcessCandle)
.Start();
var area = CreateChartArea();
if (area != null)
{
DrawCandles(area, subscription);
DrawOwnTrades(area);
}
}
private void ProcessCandle(ICandleMessage candle)
{
if (candle.State != CandleStates.Finished)
return;
_candles.Add(candle);
if (_candles.Count > 3)
_candles.RemoveAt(0);
if (!IsFormedAndOnlineAndAllowTrading())
return;
if (Position < 0)
{
if (candle.ClosePrice >= _stopPrice)
BuyMarket(-Position);
return;
}
if (Position != 0 || _candles.Count < 3)
return;
var c0 = _candles[0];
var c1 = _candles[1];
var c2 = _candles[2];
if (!(c0.ClosePrice > c0.OpenPrice && Math.Abs(c1.ClosePrice - c1.OpenPrice) <= (c1.HighPrice - c1.LowPrice) * DojiBodyPercent / 100m && Math.Min(c1.OpenPrice, c1.ClosePrice) > Math.Max(c0.OpenPrice, c0.ClosePrice) && c2.ClosePrice < c2.OpenPrice && Math.Max(c2.OpenPrice, c2.ClosePrice) < Math.Min(c1.OpenPrice, c1.ClosePrice)))
return;
SellMarket(Volume);
_stopPrice = c1.HighPrice * (1 + StopLossPercent / 100m);
}
}
import clr
clr.AddReference("StockSharp.Messages")
clr.AddReference("StockSharp.Algo")
clr.AddReference("StockSharp.Algo.Indicators")
clr.AddReference("StockSharp.Algo.Strategies")
from System import TimeSpan, Math, Decimal
from StockSharp.Messages import DataType, CandleStates
from StockSharp.Algo.Strategies import Strategy
class bearish_abandoned_baby_strategy(Strategy):
"""
Bearish Abandoned Baby strategy.
While flat it sells after a bullish candle, a doji whose body gaps above the first body, and a bearish candle whose body gaps below the doji.
The stop lies StopLossPercent above the doji's high, and a close beyond it closes the position.
"""
def __init__(self):
super(bearish_abandoned_baby_strategy, self).__init__()
self._doji_body_percent = self.Param("DojiBodyPercent", 10.0).SetNotNegative().SetDisplay("Doji Body %", "Largest body of the doji, in percent of its range", "Pattern")
self._stop_loss_percent = self.Param("StopLossPercent", 2.0).SetNotNegative().SetDisplay("Stop Loss %", "Distance of the stop beyond the pattern, in percent", "Risk")
self._candle_type = self.Param("CandleType", DataType.TimeFrame(TimeSpan.FromMinutes(15))).SetDisplay("Candle Type", "Type of candles to use", "General")
self._candles = []
self._stop_price = Decimal(0)
@property
def candle_type(self):
return self._candle_type.Value
def OnReseted(self):
super(bearish_abandoned_baby_strategy, self).OnReseted()
self._candles = []
self._stop_price = Decimal(0)
def OnStarted2(self, time):
super(bearish_abandoned_baby_strategy, self).OnStarted2(time)
self._candles = []
self._stop_price = Decimal(0)
subscription = self.SubscribeCandles(self.candle_type)
subscription.Bind(self._process_candle).Start()
area = self.CreateChartArea()
if area is not None:
self.DrawCandles(area, subscription)
self.DrawOwnTrades(area)
def _process_candle(self, candle):
if candle.State != CandleStates.Finished:
return
self._candles.append(candle)
if len(self._candles) > 3:
self._candles.pop(0)
if not self.IsFormedAndOnlineAndAllowTrading():
return
if self.Position < 0:
if candle.ClosePrice >= self._stop_price:
self.BuyMarket(-self.Position)
return
if self.Position != 0 or len(self._candles) < 3:
return
c0, c1, c2 = self._candles
if not (c0.ClosePrice > c0.OpenPrice and Math.Abs(c1.ClosePrice - c1.OpenPrice) <= (c1.HighPrice - c1.LowPrice) * Decimal(self._doji_body_percent.Value) / Decimal(100) and Math.Min(c1.OpenPrice, c1.ClosePrice) > Math.Max(c0.OpenPrice, c0.ClosePrice) and c2.ClosePrice < c2.OpenPrice and Math.Max(c2.OpenPrice, c2.ClosePrice) < Math.Min(c1.OpenPrice, c1.ClosePrice)):
return
self.SellMarket(self.Volume)
self._stop_price = c1.HighPrice * (Decimal(1) + Decimal(self._stop_loss_percent.Value) / Decimal(100))
def CreateClone(self):
return bearish_abandoned_baby_strategy()