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PresentTrend Strategy

Uses ATR-based thresholds with RSI or MFI to track trend direction. The PresentTrend line is built by expanding or contracting based on oscillator value and ATR. Signals appear when PresentTrend crosses its value from two bars ago and the most recent opposite signal confirms direction.

  • Long: PresentTrend crosses above its value two bars earlier and the last short signal was more recent than the previous long.
  • Short: PresentTrend crosses below its value two bars earlier and the last long signal was more recent than the previous short.
  • Indicators: ATR, RSI or MFI.
  • Stops: Closes position when opposite signal appears in one-sided mode.
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>
/// PresentTrend strategy using EMA crossover.
/// </summary>
public class PresentTrendStrategy : Strategy
{
	private readonly StrategyParam<int> _slowLength;
	private readonly StrategyParam<DataType> _candleType;

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

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

	public PresentTrendStrategy()
	{
		_slowLength = Param(nameof(SlowLength), 40)
			.SetGreaterThanZero()
			.SetDisplay("Slow Length", "Slow EMA period", "General");

		_candleType = Param(nameof(CandleType), TimeSpan.FromMinutes(5).TimeFrame())
			.SetDisplay("Candle Type", "Candle type", "General");
	}

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

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

		var fast = new ExponentialMovingAverage { Length = 14 };
		var slow = new ExponentialMovingAverage { Length = SlowLength };

		var prevF = 0m;
		var prevS = 0m;
		var init = false;
		var lastSignal = DateTimeOffset.MinValue;
		var cooldown = TimeSpan.FromMinutes(360);

		var subscription = SubscribeCandles(CandleType);
		subscription
			.Bind(fast, slow, (candle, f, s) =>
			{
				if (candle.State != CandleStates.Finished)
					return;

				if (!fast.IsFormed || !slow.IsFormed)
					return;

				if (!init)
				{
					prevF = f;
					prevS = s;
					init = true;
					return;
				}

				if (candle.OpenTime - lastSignal >= cooldown)
				{
					if (prevF <= prevS && f > s && Position <= 0)
					{
						BuyMarket();
						lastSignal = candle.OpenTime;
					}
					else if (prevF >= prevS && f < s && Position >= 0)
					{
						SellMarket();
						lastSignal = candle.OpenTime;
					}
				}

				prevF = f;
				prevS = s;
			})
			.Start();

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