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Hurst Exponent Trend Strategy

本策略使用赫斯特指数判断市场是否处于趋势状态。指数高于阈值表示趋势持续，低于阈值则可能是震荡或均值回归。移动平均线提供方向确认。

测试表明年均收益约为 40%，该策略在加密市场表现最佳。

当赫斯特指数高于阈值且收盘价站在均线上方时做多；当赫斯特指数高且价格收于均线下方时做空。若赫斯特指数跌破阈值，则平掉现有仓位以避免在震荡市中交易。

这种方法适合希望在入场前获得客观趋势确认的交易者。趋势过滤和止损结合有助于管理假信号带来的风险。

细节

  • 入场条件:
    • 多头: Hurst > Threshold && Close > MA
    • 空头: Hurst > Threshold && Close < MA
  • 多/空: 双向
  • 离场条件:
    • 多头: 收盘价跌破MA或Hurst < Threshold
    • 空头: 收盘价升破MA或Hurst < Threshold
  • 止损: 百分比止损
  • 默认值:
    • HurstPeriod = 100
    • MaPeriod = 20
    • HurstThreshold = 0.55m
    • CandleType = TimeSpan.FromMinutes(5)
  • 过滤器:
    • 类别: Trend
    • 方向: 双向
    • 指标: Hurst Exponent, MA
    • 止损: 是
    • 复杂度: 中等
    • 时间框架: 日内
    • 季节性: 否
    • 神经网络: 否
    • 背离: 否
    • 风险等级: 中等
using System;
using System.Linq;
using System.Collections.Generic;

using Ecng.Common;
using Ecng.Collections;
using Ecng.Serialization;

using StockSharp.Algo.Indicators;
using StockSharp.Algo.Strategies;
using StockSharp.BusinessEntities;
using StockSharp.Messages;

namespace StockSharp.Samples.Strategies;

/// <summary>
/// Hurst Exponent Trend strategy.
/// Uses Hurst exponent to identify trending markets.
/// </summary>
public class HurstExponentTrendStrategy : Strategy
{
	private readonly StrategyParam<int> _hurstPeriodParam;
	private readonly StrategyParam<int> _maPeriodParam;
	private readonly StrategyParam<decimal> _hurstThresholdParam;
	private readonly StrategyParam<DataType> _candleTypeParam;

	private HurstExponent _hurst;
	private SimpleMovingAverage _sma;

	/// <summary>
	/// Hurst exponent calculation period.
	/// </summary>
	public int HurstPeriod
	{
		get => _hurstPeriodParam.Value;
		set => _hurstPeriodParam.Value = value;
	}

	/// <summary>
	/// Moving average period.
	/// </summary>
	public int MaPeriod
	{
		get => _maPeriodParam.Value;
		set => _maPeriodParam.Value = value;
	}

	/// <summary>
	/// Hurst exponent threshold for trend identification.
	/// </summary>
	public decimal HurstThreshold
	{
		get => _hurstThresholdParam.Value;
		set => _hurstThresholdParam.Value = value;
	}

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

	/// <summary>
	/// Constructor.
	/// </summary>
	public HurstExponentTrendStrategy()
	{
		_hurstPeriodParam = Param(nameof(HurstPeriod), 100)
			.SetGreaterThanZero()
			.SetDisplay("Hurst Period", "Period for Hurst exponent calculation", "Parameters")
			
			.SetOptimize(50, 150, 25);

		_maPeriodParam = Param(nameof(MaPeriod), 20)
			.SetGreaterThanZero()
			.SetDisplay("MA Period", "Period for Moving Average", "Parameters")
			
			.SetOptimize(10, 50, 10);

		_hurstThresholdParam = Param(nameof(HurstThreshold), 0.55m)
			.SetRange(0.1m, 0.9m)
			.SetDisplay("Hurst Threshold", "Threshold value for trend identification", "Parameters")
			
			.SetOptimize(0.5m, 0.6m, 0.05m);

		_candleTypeParam = Param(nameof(CandleType), TimeSpan.FromMinutes(5).TimeFrame())
			.SetDisplay("Candle Type", "Candle type for strategy", "Common");
	}

	/// <inheritdoc />
	public override IEnumerable<(Security sec, DataType dt)> GetWorkingSecurities()
	{
		return [(Security, CandleType)];
	}

	/// <inheritdoc />
	protected override void OnReseted()
	{
		base.OnReseted();

		_hurst = null;
		_sma = null;
	}

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

		// Create indicators
		_hurst = new HurstExponent { Length = HurstPeriod };
		_sma = new SMA { Length = MaPeriod };

		// Create subscription and bind indicators
		var subscription = SubscribeCandles(CandleType);
		subscription
			.Bind(_hurst, _sma, ProcessCandle)
			.Start();

		// Setup chart visualization if available
		var area = CreateChartArea();
		if (area != null)
		{
			DrawCandles(area, subscription);
			DrawIndicator(area, _sma);
			DrawOwnTrades(area);
		}
		
		// Enable position protection
		StartProtection(
			takeProfit: new Unit(0, UnitTypes.Absolute), // No take profit
			stopLoss: new Unit(2, UnitTypes.Percent) // 2% stop loss
		);
	}

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

		if (!IsFormedAndOnlineAndAllowTrading())
			return;
		
		// Check if market is trending (Hurst > 0.5 indicates trending market)
		bool isTrending = hurstValue > HurstThreshold;
		
		if (isTrending)
		{
			// In trending markets, use price relative to MA to determine direction
			
			// Long setup - trending market with price above MA
			if (candle.ClosePrice > smaValue && Position <= 0)
			{
				// Buy signal - trending market with price above MA
				BuyMarket(Volume + Math.Abs(Position));
			}
			// Short setup - trending market with price below MA
			else if (candle.ClosePrice < smaValue && Position >= 0)
			{
				// Sell signal - trending market with price below MA
				SellMarket(Volume + Math.Abs(Position));
			}
		}
		else
		{
			// In non-trending markets, exit positions
			if (Position > 0)
			{
				SellMarket(Position);
			}
			else if (Position < 0)
			{
				BuyMarket(Math.Abs(Position));
			}
		}
	}
}