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Bollinger Williams R 戦略

Bollinger Bands と Williams %R インジケーターに基づく戦略。価格が下部バンドにあり、Williams %R が売られすぎ（< -80）の場合にロング参入。価格が上部バンドにあり、Williams %R が買われすぎ（> -20）の場合にショート参入。

テストでは年平均収益率は約 103% を示しています。株式市場で最もパフォーマンスが優れています。

Bollinger Bands はボラティリティのブレイクアウトを明らかにし、Williams %R はモメンタムが極端であることを確認します。価格が対応する Williams %R の読みとともにバンドの外で終値をつけたときにポジションが開かれます。

ボラティリティ拡張トレーダーに最適です。ATR ストップが不利な転換を処理します。

詳細

  • エントリー条件:
    • ロング: Close < LowerBand && WilliamsR < -80
    • ショート: Close > UpperBand && WilliamsR > -20
  • ロング/ショート: 両方
  • エグジット条件: 価格が中間バンドに戻る
  • ストップ: AtrMultiplier を使用した ATR ベース
  • デフォルト値:
    • BollingerPeriod = 20
    • BollingerDeviation = 2.0m
    • WilliamsRPeriod = 14
    • WilliamsROversold = -80
    • WilliamsROverbought = -20
    • AtrPeriod = 14
    • AtrMultiplier = 2.0m
    • CandleType = TimeSpan.FromMinutes(5).TimeFrame() ルール中の-80と-20はWilliamsROversoldとWilliamsROverboughtの既定値です。ストップはエントリー時の終値からAtrMultiplier倍のATR（AtrPeriod）の位置にあり、足の終値で判定します。 保有ポジションと逆方向のエントリーシグナルはドテンになります。
  • フィルター:
    • カテゴリ: 平均回帰
    • 方向: 両方
    • インジケーター: Bollinger Bands, Williams %R, R
    • ストップ: はい
    • 複雑さ: 中級
    • 時間軸: 中期
    • 季節性: いいえ
    • ニューラルネットワーク: いいえ
    • ダイバージェンス: いいえ
    • リスクレベル: 中
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>
/// Bollinger Williams %R strategy.
/// A close below the lower band with Williams %R below WilliamsROversold goes long and a close above the upper band with %R above
/// WilliamsROverbought goes short, reversing an opposite position. The position closes when price returns to the middle band.
/// The stop lies AtrMultiplier ATR from the entry close and is checked on candle closes.
/// </summary>
public class BollingerWilliamsRStrategy : Strategy
{
	private readonly StrategyParam<int> _bollingerPeriod;
	private readonly StrategyParam<decimal> _bollingerDeviation;
	private readonly StrategyParam<int> _williamsRPeriod;
	private readonly StrategyParam<decimal> _williamsROversold;
	private readonly StrategyParam<decimal> _williamsROverbought;
	private readonly StrategyParam<int> _atrPeriod;
	private readonly StrategyParam<decimal> _atrMultiplier;
	private readonly StrategyParam<DataType> _candleType;

	private decimal _stopPrice;

	/// <summary>
	/// Period of the Bollinger Bands.
	/// </summary>
	public int BollingerPeriod
	{
		get => _bollingerPeriod.Value;
		set => _bollingerPeriod.Value = value;
	}

	/// <summary>
	/// Standard deviation multiplier of the bands.
	/// </summary>
	public decimal BollingerDeviation
	{
		get => _bollingerDeviation.Value;
		set => _bollingerDeviation.Value = value;
	}

	/// <summary>
	/// Period of Williams %R.
	/// </summary>
	public int WilliamsRPeriod
	{
		get => _williamsRPeriod.Value;
		set => _williamsRPeriod.Value = value;
	}

	/// <summary>
	/// Williams %R level for longs.
	/// </summary>
	public decimal WilliamsROversold
	{
		get => _williamsROversold.Value;
		set => _williamsROversold.Value = value;
	}

	/// <summary>
	/// Williams %R level for shorts.
	/// </summary>
	public decimal WilliamsROverbought
	{
		get => _williamsROverbought.Value;
		set => _williamsROverbought.Value = value;
	}

	/// <summary>
	/// Period of the stop ATR.
	/// </summary>
	public int AtrPeriod
	{
		get => _atrPeriod.Value;
		set => _atrPeriod.Value = value;
	}

	/// <summary>
	/// Stop distance from the entry in ATRs.
	/// </summary>
	public decimal AtrMultiplier
	{
		get => _atrMultiplier.Value;
		set => _atrMultiplier.Value = value;
	}

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

	/// <summary>
	/// Constructor.
	/// </summary>
	public BollingerWilliamsRStrategy()
	{
		_bollingerPeriod = Param(nameof(BollingerPeriod), 20)
			.SetGreaterThanZero()
			.SetDisplay("Bollinger Period", "Period of the Bollinger Bands", "Indicators");

		_bollingerDeviation = Param(nameof(BollingerDeviation), 2m)
			.SetGreaterThanZero()
			.SetDisplay("Bollinger Deviation", "Standard deviation multiplier of the bands", "Indicators");

		_williamsRPeriod = Param(nameof(WilliamsRPeriod), 14)
			.SetGreaterThanZero()
			.SetDisplay("Williams %R Period", "Period of Williams %R", "Indicators");

		_williamsROversold = Param(nameof(WilliamsROversold), -80m)
			.SetDisplay("Williams %R Oversold", "Williams %R level for longs", "Indicators");

		_williamsROverbought = Param(nameof(WilliamsROverbought), -20m)
			.SetDisplay("Williams %R Overbought", "Williams %R level for shorts", "Indicators");

		_atrPeriod = Param(nameof(AtrPeriod), 14)
			.SetGreaterThanZero()
			.SetDisplay("ATR Period", "Period of the stop ATR", "Risk");

		_atrMultiplier = Param(nameof(AtrMultiplier), 2m)
			.SetNotNegative()
			.SetDisplay("ATR Multiplier", "Stop distance from the entry in ATRs", "Risk");

		_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();
		_stopPrice = default;
	}

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

		_stopPrice = default;

		var bollinger = new BollingerBands { Length = BollingerPeriod, Width = BollingerDeviation };
		var williams = new WilliamsR { Length = WilliamsRPeriod };
		var atr = new AverageTrueRange { Length = AtrPeriod };

		var subscription = SubscribeCandles(CandleType);
		subscription
			.BindEx(bollinger, williams, atr, ProcessCandle)
			.Start();

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

			var oscillators = CreateChartArea();
			if (oscillators != null)
			{
				DrawIndicator(oscillators, williams);
			}
		}
	}

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

		if (!bollingerValue.IsFormed || !williamsValue.IsFormed || !atrValue.IsFormed)
			return;

		var bands = (BollingerBandsValue)bollingerValue;

		if (bands.UpBand is not decimal upper || bands.LowBand is not decimal lower || bands.MovingAverage is not decimal middle)
			return;

		if (!IsFormedAndOnlineAndAllowTrading())
			return;

		var atr = atrValue.GetValue<decimal>();
		var close = candle.ClosePrice;
		var williams = williamsValue.GetValue<decimal>();

		if (close < lower && williams < WilliamsROversold && Position <= 0)
		{
			BuyMarket(Volume + Math.Abs(Position));
			_stopPrice = close - AtrMultiplier * atr;
		}
		else if (close > upper && williams > WilliamsROverbought && Position >= 0)
		{
			SellMarket(Volume + Math.Abs(Position));
			_stopPrice = close + AtrMultiplier * atr;
		}
		else if (Position > 0 && (close >= middle || (AtrMultiplier > 0 && close <= _stopPrice)))
		{
			SellMarket(Position);
		}
		else if (Position < 0 && (close <= middle || (AtrMultiplier > 0 && close >= _stopPrice)))
		{
			BuyMarket(-Position);
		}
	}
}