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ATR 疲劳策略

平均真实波幅（ATR）的突然飙升意味着波动扩大，但往往很快衰减。本策略寻找 ATR 高于其均线一定倍数的情况，配合反转蜡烛捕捉随后的回落。

测试表明年均收益约为 139%，该策略在股票市场表现最佳。

每根K线更新 ATR 及其平均值。如果 ATR 超过均值乘以设定倍数且蜡烛收盘方向与前一波相反，则开仓。止损也基于 ATR 倍数，将风险与当前波动联系起来。

仓位通常依靠止损退出，目标是利用波动爆发后迅速回调的机会。

细节

  • 入场条件：ATR 高于均线且出现反转蜡烛。
  • 多/空：双向。
  • 退出条件：止损。
  • 止损：有，基于 ATR。
  • 默认值：
    • AtrPeriod = 14
    • AtrAvgPeriod = 20
    • AtrMultiplier = 1.5
    • MaPeriod = 20
    • StopLoss = 2%
    • CandleType = 5 分钟
  • 过滤条件：
    • 类别: 反转
    • 方向: 双向
    • 指标: ATR, MA
    • 止损: 有
    • 复杂度: 中等
    • 时间框架: 日内
    • 季节性: 无
    • 神经网络: 无
    • 背离: 无
    • 风险级别: 中等
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>
/// ATR Exhaustion strategy.
/// Enters when ATR spikes (current ATR significantly higher than previous ATR).
/// ATR spike + bullish candle = buy.
/// ATR spike + bearish candle = sell.
/// Exits on SMA cross.
/// </summary>
public class AtrExhaustionStrategy : Strategy
{
	private readonly StrategyParam<int> _atrPeriod;
	private readonly StrategyParam<int> _maPeriod;
	private readonly StrategyParam<DataType> _candleType;
	private readonly StrategyParam<int> _cooldownBars;

	private decimal _prevAtr;
	private int _cooldown;

	/// <summary>
	/// ATR period.
	/// </summary>
	public int AtrPeriod
	{
		get => _atrPeriod.Value;
		set => _atrPeriod.Value = value;
	}

	/// <summary>
	/// MA Period.
	/// </summary>
	public int MAPeriod
	{
		get => _maPeriod.Value;
		set => _maPeriod.Value = value;
	}

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

	/// <summary>
	/// Cooldown bars.
	/// </summary>
	public int CooldownBars
	{
		get => _cooldownBars.Value;
		set => _cooldownBars.Value = value;
	}

	/// <summary>
	/// Constructor.
	/// </summary>
	public AtrExhaustionStrategy()
	{
		_atrPeriod = Param(nameof(AtrPeriod), 14)
			.SetRange(7, 21)
			.SetDisplay("ATR Period", "Period for ATR", "Indicators");

		_maPeriod = Param(nameof(MAPeriod), 20)
			.SetGreaterThanZero()
			.SetDisplay("MA Period", "Period for SMA", "Indicators");

		_candleType = Param(nameof(CandleType), TimeSpan.FromMinutes(1).TimeFrame())
			.SetDisplay("Candle Type", "Type of candles to use", "General");

		_cooldownBars = Param(nameof(CooldownBars), 500)
			.SetRange(1, 1000)
			.SetDisplay("Cooldown Bars", "Bars to wait between trades", "General");
	}

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

	/// <inheritdoc />
	protected override void OnReseted()
	{
		base.OnReseted();
		_prevAtr = default;
		_cooldown = default;
	}

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

		_prevAtr = 0;
		_cooldown = 0;

		var sma = new SimpleMovingAverage { Length = MAPeriod };
		var atr = new AverageTrueRange { Length = AtrPeriod };

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

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

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

		if (!IsFormedAndOnlineAndAllowTrading())
		{
			_prevAtr = atrValue;
			return;
		}

		if (_prevAtr == 0)
		{
			_prevAtr = atrValue;
			return;
		}

		if (_cooldown > 0)
		{
			_cooldown--;
			_prevAtr = atrValue;
			return;
		}

		// ATR spike: current ATR significantly higher than previous
		var atrSpike = _prevAtr > 0 && atrValue > _prevAtr * 1.3m;

		var isBullish = candle.ClosePrice > candle.OpenPrice;
		var isBearish = candle.ClosePrice < candle.OpenPrice;

		if (Position == 0 && atrSpike && isBullish)
		{
			BuyMarket();
			_cooldown = CooldownBars;
		}
		else if (Position == 0 && atrSpike && isBearish)
		{
			SellMarket();
			_cooldown = CooldownBars;
		}
		else if (Position > 0 && candle.ClosePrice < smaValue)
		{
			SellMarket();
			_cooldown = CooldownBars;
		}
		else if (Position < 0 && candle.ClosePrice > smaValue)
		{
			BuyMarket();
			_cooldown = CooldownBars;
		}

		_prevAtr = atrValue;
	}
}