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Bollinger Adx Strategy

Strategy combining Bollinger Bands and ADX indicators. Looks for breakouts with strong trend confirmation.

Testing indicates an average annual return of about 46%. It performs best in the stocks market.

Price movements outside Bollinger bands are filtered through ADX for strength. Trades engage when a band break coincides with high ADX.

Useful for volatility surges accompanied by strong trends. Stop size is driven by ATR.

Details

  • Entry Criteria:
    • Long: Close < LowerBand && ADX > AdxThreshold
    • Short: Close > UpperBand && ADX > AdxThreshold
  • Long/Short: Both
  • Exit Criteria:
    • Bollinger mean reversion
  • Stops: ATR-based using AtrMultiplier
  • Default Values:
    • BollingerPeriod = 20
    • BollingerDeviation = 2.0m
    • AdxPeriod = 14
    • AdxThreshold = 25m
    • AtrMultiplier = 2.0m
    • AtrPeriod = 14
    • CandleType = TimeSpan.FromMinutes(5).TimeFrame() As the entry criteria show, a band break under strong ADX is faded: the position bets on the return to the middle band (the moving average of the bands), where it closes. The stop lies AtrMultiplier ATRs (AtrPeriod) from the entry close and is checked on candle closes. An entry signal against an open position reverses it.
  • Filters:
    • Category: Mean reversion
    • Direction: Both
    • Indicators: Bollinger Bands, ADX
    • Stops: Yes
    • Complexity: Intermediate
    • Timeframe: Mid-term
    • Seasonality: No
    • Neural Networks: No
    • Divergence: No
    • Risk Level: Medium
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 ADX strategy.
/// A close below the lower band while ADX is above AdxThreshold goes long and a close above the upper band goes short, reversing
/// an opposite position. The position closes when price reverts to the middle band. The stop lies AtrMultiplier ATR from the entry close
/// and is checked on candle closes.
/// </summary>
public class BollingerAdxStrategy : Strategy
{
	private readonly StrategyParam<int> _bollingerPeriod;
	private readonly StrategyParam<decimal> _bollingerDeviation;
	private readonly StrategyParam<int> _adxPeriod;
	private readonly StrategyParam<decimal> _adxThreshold;
	private readonly StrategyParam<decimal> _atrMultiplier;
	private readonly StrategyParam<int> _atrPeriod;
	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 ADX.
	/// </summary>
	public int AdxPeriod
	{
		get => _adxPeriod.Value;
		set => _adxPeriod.Value = value;
	}

	/// <summary>
	/// ADX level of a strong trend.
	/// </summary>
	public decimal AdxThreshold
	{
		get => _adxThreshold.Value;
		set => _adxThreshold.Value = value;
	}

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

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

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

	/// <summary>
	/// Constructor.
	/// </summary>
	public BollingerAdxStrategy()
	{
		_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");

		_adxPeriod = Param(nameof(AdxPeriod), 14)
			.SetGreaterThanZero()
			.SetDisplay("ADX Period", "Period of ADX", "Indicators");

		_adxThreshold = Param(nameof(AdxThreshold), 25m)
			.SetDisplay("ADX Threshold", "ADX level of a strong trend", "Indicators");

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

		_atrPeriod = Param(nameof(AtrPeriod), 14)
			.SetGreaterThanZero()
			.SetDisplay("ATR Period", "Period of the stop ATR", "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 adx = new AverageDirectionalIndex { Length = AdxPeriod };
		var atr = new AverageTrueRange { Length = AtrPeriod };

		var subscription = SubscribeCandles(CandleType);
		subscription
			.BindEx(bollinger, adx, 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, adx);
			}
		}
	}

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

		if (!bollingerValue.IsFormed || !adxValue.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 (adxValue is not AverageDirectionalIndexValue { MovingAverage: decimal strength })
			return;

		if (!IsFormedAndOnlineAndAllowTrading())
			return;

		var atr = atrValue.GetValue<decimal>();
		var close = candle.ClosePrice;
		var strong = strength > AdxThreshold;

		if (close < lower && strong && Position <= 0)
		{
			BuyMarket(Volume + Math.Abs(Position));
			_stopPrice = close - AtrMultiplier * atr;
		}
		else if (close > upper && strong && 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);
		}
	}
}