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Volumen Slope Estrategia de Reversión a la Media

La estrategia Volumen Slope de Reversión a la Media se centra en lecturas extremas del Volumen para aprovechar la reversión. Las desviaciones amplias del nivel típico 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 Volumen regresa al equilibrio. Parámetro inicial VolumeMaPeriod = 20.

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:
    • VolumeMaPeriod = 20
    • LookbackPeriod = 20
    • DeviationMultiplier = 2.0m
    • StopLossPercent = 2.0m
    • CandleType = TimeSpan.FromMinutes(5)
  • Filtros:
    • Categoría: Reversión a la media
    • Dirección: Ambos
    • Indicadores: Volumen
    • 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>
/// Volume slope mean reversion strategy.
/// Trades reversion of extreme volume-ratio slope values.
/// </summary>
public class VolumeSlopeMeanReversionStrategy : Strategy
{
	private readonly StrategyParam<int> _volumeMaPeriod;
	private readonly StrategyParam<int> _slopeLookback;
	private readonly StrategyParam<decimal> _thresholdMultiplier;
	private readonly StrategyParam<decimal> _stopLossPercent;
	private readonly StrategyParam<int> _cooldownBars;
	private readonly StrategyParam<DataType> _candleType;

	private SimpleMovingAverage _volumeAverage;
	private decimal _previousVolumeRatio;
	private decimal[] _slopeHistory;
	private int _currentIndex;
	private int _filledCount;
	private int _cooldown;
	private bool _isInitialized;

	/// <summary>
	/// Volume moving average period.
	/// </summary>
	public int VolumeMaPeriod
	{
		get => _volumeMaPeriod.Value;
		set => _volumeMaPeriod.Value = value;
	}

	/// <summary>
	/// Lookback used to estimate slope mean and standard deviation.
	/// </summary>
	public int SlopeLookback
	{
		get => _slopeLookback.Value;
		set => _slopeLookback.Value = value;
	}

	/// <summary>
	/// Standard deviation multiplier for entry threshold.
	/// </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>
	/// Bars to wait between orders.
	/// </summary>
	public int CooldownBars
	{
		get => _cooldownBars.Value;
		set => _cooldownBars.Value = value;
	}

	/// <summary>
	/// Candle type.
	/// </summary>
	public DataType CandleType
	{
		get => _candleType.Value;
		set => _candleType.Value = value;
	}

	/// <summary>
	/// Initializes a new instance of <see cref="VolumeSlopeMeanReversionStrategy"/>.
	/// </summary>
	public VolumeSlopeMeanReversionStrategy()
	{
		_volumeMaPeriod = Param(nameof(VolumeMaPeriod), 20)
			.SetGreaterThanZero()
			.SetDisplay("Volume MA Period", "Period for the volume moving average", "Indicator Parameters");

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

		_thresholdMultiplier = Param(nameof(ThresholdMultiplier), 1.5m)
			.SetGreaterThanZero()
			.SetDisplay("Threshold Multiplier", "Standard deviation multiplier for entries", "Strategy Parameters");

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

		_cooldownBars = Param(nameof(CooldownBars), 1200)
			.SetRange(1, 5000)
			.SetDisplay("Cooldown Bars", "Bars to wait between orders", "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();

		_volumeAverage = null;
		_previousVolumeRatio = default;
		_slopeHistory = new decimal[SlopeLookback];
		_currentIndex = default;
		_filledCount = default;
		_cooldown = default;
		_isInitialized = default;
	}

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

		_volumeAverage = new SimpleMovingAverage
		{
			Length = VolumeMaPeriod,
			Source = Level1Fields.Volume,
		};

		_slopeHistory = new decimal[SlopeLookback];
		_currentIndex = 0;
		_filledCount = 0;
		_cooldown = 0;

		var subscription = SubscribeCandles(CandleType);
		subscription
			.Bind(_volumeAverage, ProcessCandle)
			.Start();

		StartProtection(new(), new Unit(StopLossPercent, UnitTypes.Percent));

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

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

		if (!_volumeAverage.IsFormed || averageVolume <= 0)
			return;

		var volumeRatio = candle.TotalVolume / averageVolume;

		if (!_isInitialized)
		{
			_previousVolumeRatio = volumeRatio;
			_isInitialized = true;
			return;
		}

		var slope = volumeRatio - _previousVolumeRatio;
		_previousVolumeRatio = volumeRatio;

		_slopeHistory[_currentIndex] = slope;
		_currentIndex = (_currentIndex + 1) % SlopeLookback;

		if (_filledCount < SlopeLookback)
			_filledCount++;

		if (_filledCount < SlopeLookback)
			return;

		CalculateStatistics(out var averageSlope, out var slopeStdDev);

		if (!IsFormedAndOnlineAndAllowTrading())
			return;

		if (slopeStdDev <= 0)
			return;

		if (_cooldown > 0)
		{
			_cooldown--;
			return;
		}

		var lowerThreshold = averageSlope - ThresholdMultiplier * slopeStdDev;
		var upperThreshold = averageSlope + ThresholdMultiplier * slopeStdDev;
		var isBullishCandle = candle.ClosePrice >= candle.OpenPrice;
		var isBearishCandle = candle.ClosePrice <= candle.OpenPrice;

		if (Position == 0)
		{
			if (slope <= lowerThreshold && isBullishCandle)
			{
				BuyMarket();
				_cooldown = CooldownBars;
			}
			else if (slope >= upperThreshold && isBearishCandle)
			{
				SellMarket();
				_cooldown = CooldownBars;
			}
		}
		else if (Position > 0)
		{
			if (slope >= averageSlope || isBearishCandle)
			{
				SellMarket(Math.Abs(Position));
				_cooldown = CooldownBars;
			}
		}
		else if (Position < 0)
		{
			if (slope <= averageSlope || isBullishCandle)
			{
				BuyMarket(Math.Abs(Position));
				_cooldown = CooldownBars;
			}
		}
	}

	private void CalculateStatistics(out decimal averageSlope, out decimal slopeStdDev)
	{
		averageSlope = 0m;
		var sumSquaredDiffs = 0m;

		for (var i = 0; i < SlopeLookback; i++)
			averageSlope += _slopeHistory[i];

		averageSlope /= SlopeLookback;

		for (var i = 0; i < SlopeLookback; i++)
		{
			var diff = _slopeHistory[i] - averageSlope;
			sumSquaredDiffs += diff * diff;
		}

		slopeStdDev = (decimal)Math.Sqrt((double)(sumSquaredDiffs / SlopeLookback));
	}
}