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Adx Bollinger Strategy

Strategy based on ADX and Bollinger Bands indicators. Enters long when ADX > 25 and price closes below the lower Bollinger band. Enters short when ADX > 25 and price closes above the upper Bollinger band.

Testing indicates an average annual return of about 115%. It performs best in the stocks market.

Bollinger band breaches filtered with ADX ensure price is breaking out with force. The system trades in the direction of the breakout.

Suited for high-volatility environments. An ATR-based stop reduces downside risk.

Details

  • Entry Criteria:
    • Long: Close < LowerBand && ADX > 25
    • Short: Close > UpperBand && ADX > 25
  • Long/Short: Both
  • Exit Criteria: Price returns to middle band
  • Stops: ATR-based using AtrMultiplier
  • Default Values:
    • AdxPeriod = 14
    • AdxThreshold = 25
    • BollingerPeriod = 20
    • BollingerDeviation = 2.0m
    • AtrPeriod = 14
    • AtrMultiplier = 2.0m
    • CandleType = TimeSpan.FromMinutes(5).TimeFrame() The 25 in the rules is the default of AdxThreshold. As the entry criteria, the middle-band exit and the Mean reversion category show, a band break under strong ADX is faded. 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: ADX, Bollinger Bands
    • 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>
/// ADX Bollinger 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 AdxBollingerStrategy : Strategy
{
	private readonly StrategyParam<int> _adxPeriod;
	private readonly StrategyParam<decimal> _adxThreshold;
	private readonly StrategyParam<int> _bollingerPeriod;
	private readonly StrategyParam<decimal> _bollingerDeviation;
	private readonly StrategyParam<int> _atrPeriod;
	private readonly StrategyParam<decimal> _atrMultiplier;
	private readonly StrategyParam<DataType> _candleType;

	private decimal _stopPrice;

	/// <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>
	/// 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 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 AdxBollingerStrategy()
	{
		_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");

		_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");

		_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 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);
		}
	}
}