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Stochastic Slope Estrategia de Reversión a la Media

La estrategia Stochastic Slope de Reversión a la Media se centra en lecturas extremas del Stochastic para aprovechar la reversión. Las desviaciones amplias del nivel normal raramente perduran.

Las operaciones se activan cuando el indicador se aleja mucho de su media y luego comienza a revertirse. Tanto las configuraciones largas como las cortas incluyen un stop de protección.

Adecuada para traders de swing que esperan oscilaciones, la estrategia cierra la posición una vez que el Stochastic regresa al equilibrio. Parámetro inicial StochPeriod = 14.

Detalles

  • Criterios de entrada: El indicador cruza de vuelta hacia la media.
  • Largo/Corto: Ambas direcciones.
  • Criterios de salida: El indicador revierte al promedio.
  • Stops: Sí.
  • Valores predeterminados:
    • StochPeriod = 14
    • StochKPeriod = 3
    • StochDPeriod = 3
    • SlopeLookback = 20
    • ThresholdMultiplier = 2m
    • StopLossPercent = 2m
    • CandleType = TimeSpan.FromMinutes(5)
  • Filtros:
    • Categoría: Reversión a la media
    • Dirección: Ambos
    • Indicadores: Stochastic
    • Stops: Sí
    • Complejidad: Intermedio
    • Marco temporal: Corto plazo
    • Estacionalidad: No
    • Redes neuronales: No
    • Divergencia: No
    • Nivel de riesgo: Medio
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>
/// Stochastic slope mean reversion.
/// The slope of the smoothed %K is compared with its average: buys when the slope is far below the average
/// and starts turning up, sells when it is far above and starts turning down.
/// Exits when the slope returns to its average.
/// </summary>
public class StochasticSlopeMeanReversionStrategy : Strategy
{
	private readonly StrategyParam<int> _stochPeriod;
	private readonly StrategyParam<int> _stochKPeriod;
	private readonly StrategyParam<int> _stochDPeriod;
	private readonly StrategyParam<int> _slopeLookback;
	private readonly StrategyParam<decimal> _thresholdMultiplier;
	private readonly StrategyParam<decimal> _stopLossPercent;
	private readonly StrategyParam<DataType> _candleType;

	private SimpleMovingAverage _kSmoothing;
	private SimpleMovingAverage _slopeAverage;
	private StandardDeviation _slopeStdDev;
	private decimal? _prevK;
	private decimal? _prevSlope;

	/// <summary>
	/// Stochastic lookback period.
	/// </summary>
	public int StochPeriod
	{
		get => _stochPeriod.Value;
		set => _stochPeriod.Value = value;
	}

	/// <summary>
	/// Smoothing period of %K.
	/// </summary>
	public int StochKPeriod
	{
		get => _stochKPeriod.Value;
		set => _stochKPeriod.Value = value;
	}

	/// <summary>
	/// Period of %D.
	/// </summary>
	public int StochDPeriod
	{
		get => _stochDPeriod.Value;
		set => _stochDPeriod.Value = value;
	}

	/// <summary>
	/// Lookback period for slope statistics.
	/// </summary>
	public int SlopeLookback
	{
		get => _slopeLookback.Value;
		set => _slopeLookback.Value = value;
	}

	/// <summary>
	/// Standard deviation multiplier for extreme slope.
	/// </summary>
	public decimal ThresholdMultiplier
	{
		get => _thresholdMultiplier.Value;
		set => _thresholdMultiplier.Value = value;
	}

	/// <summary>
	/// Stop-loss percentage.
	/// </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>
	/// Initialize <see cref="StochasticSlopeMeanReversionStrategy"/>.
	/// </summary>
	public StochasticSlopeMeanReversionStrategy()
	{
		_stochPeriod = Param(nameof(StochPeriod), 14)
			.SetGreaterThanZero()
			.SetDisplay("Stochastic Period", "Stochastic lookback period", "Stochastic");

		_stochKPeriod = Param(nameof(StochKPeriod), 3)
			.SetGreaterThanZero()
			.SetDisplay("Stoch %K Period", "Smoothing period of %K", "Stochastic");

		_stochDPeriod = Param(nameof(StochDPeriod), 3)
			.SetGreaterThanZero()
			.SetDisplay("Stoch %D Period", "Period of %D", "Stochastic");

		_slopeLookback = Param(nameof(SlopeLookback), 20)
			.SetGreaterThanZero()
			.SetDisplay("Slope Lookback", "Period for slope statistics", "Strategy");

		_thresholdMultiplier = Param(nameof(ThresholdMultiplier), 2m)
			.SetGreaterThanZero()
			.SetDisplay("Threshold Multiplier", "Standard deviation multiplier for extreme slope", "Strategy");

		_stopLossPercent = Param(nameof(StopLossPercent), 2m)
			.SetNotNegative()
			.SetDisplay("Stop Loss %", "Stop-loss percentage", "Risk Management");

		_candleType = Param(nameof(CandleType), TimeSpan.FromMinutes(5).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();
		_kSmoothing = null;
		_slopeAverage = null;
		_slopeStdDev = null;
		_prevK = null;
		_prevSlope = null;
	}

	/// <inheritdoc />
	protected override void OnStarted2(DateTime time)
	{
		base.OnStarted2(time);

		var stochastic = new StochasticOscillator();
		stochastic.K.Length = StochPeriod;
		stochastic.D.Length = StochDPeriod;

		_kSmoothing = new SimpleMovingAverage { Length = StochKPeriod };
		_slopeAverage = new SimpleMovingAverage { Length = SlopeLookback };
		_slopeStdDev = new StandardDeviation { Length = SlopeLookback };

		var subscription = SubscribeCandles(CandleType);
		subscription
			.BindEx(stochastic, ProcessCandle)
			.Start();

		StartProtection(
			takeProfit: null,
			stopLoss: StopLossPercent > 0 ? new Unit(StopLossPercent, UnitTypes.Percent) : null
		);

		var area = CreateChartArea();
		if (area != null)
		{
			DrawCandles(area, subscription);
			DrawOwnTrades(area);

			var stochArea = CreateChartArea();
			if (stochArea != null)
				DrawIndicator(stochArea, stochastic);
		}
	}

	private void ProcessCandle(ICandleMessage candle, IIndicatorValue stochValue)
	{
		if (candle.State != CandleStates.Finished)
			return;

		var stoch = (StochasticOscillatorValue)stochValue;
		if (stoch.K is not decimal rawK)
			return;

		var k = _kSmoothing.Process(rawK, candle.ServerTime, true).ToDecimal();
		if (!_kSmoothing.IsFormed)
			return;

		if (_prevK is not decimal prevK)
		{
			_prevK = k;
			return;
		}

		_prevK = k;

		var slope = k - prevK;
		var avgSlope = _slopeAverage.Process(slope, candle.ServerTime, true).ToDecimal();
		var stdSlope = _slopeStdDev.Process(slope, candle.ServerTime, true).ToDecimal();

		var prevSlope = _prevSlope;
		_prevSlope = slope;

		if (!_slopeAverage.IsFormed || !_slopeStdDev.IsFormed || prevSlope is not decimal prev)
			return;

		if (!IsFormedAndOnlineAndAllowTrading())
			return;

		// Extreme reading that has started to turn back toward the average.
		if (slope < avgSlope - ThresholdMultiplier * stdSlope && slope > prev && Position <= 0)
		{
			BuyMarket(Volume + Math.Abs(Position));
		}
		else if (slope > avgSlope + ThresholdMultiplier * stdSlope && slope < prev && Position >= 0)
		{
			SellMarket(Volume + Math.Abs(Position));
		}
		else if (Position > 0 && slope >= avgSlope)
		{
			SellMarket(Position);
		}
		else if (Position < 0 && slope <= avgSlope)
		{
			BuyMarket(-Position);
		}
	}
}