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Balance of Power Strategy

The Balance of Power strategy evaluates the strength of bulls versus bears within each candle by comparing the close to the trading range. When this value crosses above a positive threshold, it indicates strong buying pressure.

The strategy enters a long position when Balance of Power crosses above the defined Threshold and exits when it drops below the negative threshold.

Details

  • Entry Criteria:
    • Balance of Power crosses above Threshold.
  • Long/Short: Long only.
  • Exit Criteria:
    • Balance of Power crosses below -Threshold.
  • Stops: None.
  • Default Values:
    • Threshold = 0.8
  • Filters:
    • Category: Momentum
    • Direction: Long
    • Indicators: Balance of Power
    • Stops: None
    • Complexity: Low
    • Timeframe: Any
    • 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>
/// Balance of Power strategy.
/// Uses EMA crossover with RSI filter and cooldown.
/// </summary>
public class BalanceOfPowerStrategy : Strategy
{
	private readonly StrategyParam<DataType> _candleType;
	private readonly StrategyParam<int> _fastEmaLength;
	private readonly StrategyParam<int> _slowEmaLength;
	private readonly StrategyParam<int> _cooldownBars;

	private decimal _prevFast;
	private decimal _prevSlow;
	private int _barIndex;
	private int _lastTradeBar;

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

	/// <summary>
	/// Fast EMA period.
	/// </summary>
	public int FastEmaLength
	{
		get => _fastEmaLength.Value;
		set => _fastEmaLength.Value = value;
	}

	/// <summary>
	/// Slow EMA period.
	/// </summary>
	public int SlowEmaLength
	{
		get => _slowEmaLength.Value;
		set => _slowEmaLength.Value = value;
	}

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

	/// <summary>
	/// Constructor.
	/// </summary>
	public BalanceOfPowerStrategy()
	{
		_candleType = Param(nameof(CandleType), TimeSpan.FromMinutes(1).TimeFrame())
			.SetDisplay("Candle Type", "Type of candles to use", "General");

		_fastEmaLength = Param(nameof(FastEmaLength), 12)
			.SetGreaterThanZero()
			.SetDisplay("Fast EMA", "Fast EMA period", "Indicators");

		_slowEmaLength = Param(nameof(SlowEmaLength), 40)
			.SetGreaterThanZero()
			.SetDisplay("Slow EMA", "Slow EMA period", "Indicators");

		_cooldownBars = Param(nameof(CooldownBars), 350)
			.SetDisplay("Cooldown Bars", "Bars between trades", "Trading");
	}

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

	/// <inheritdoc />
	protected override void OnReseted()
	{
		base.OnReseted();
		_prevFast = 0;
		_prevSlow = 0;
		_barIndex = 0;
		_lastTradeBar = 0;
	}

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

		var fastEma = new ExponentialMovingAverage { Length = FastEmaLength };
		var slowEma = new ExponentialMovingAverage { Length = SlowEmaLength };

		var subscription = SubscribeCandles(CandleType);
		subscription
			.Bind(fastEma, slowEma, ProcessCandle)
			.Start();

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

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

		_barIndex++;

		var cooldownOk = _barIndex - _lastTradeBar > CooldownBars;

		var crossUp = _prevFast > 0 && _prevFast <= _prevSlow && fastValue > slowValue;
		var crossDown = _prevFast > 0 && _prevFast >= _prevSlow && fastValue < slowValue;

		if (crossUp && Position <= 0 && cooldownOk)
		{
			BuyMarket();
			_lastTradeBar = _barIndex;
		}
		else if (crossDown && Position >= 0 && cooldownOk)
		{
			SellMarket();
			_lastTradeBar = _barIndex;
		}

		_prevFast = fastValue;
		_prevSlow = slowValue;
	}
}