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RSI Value

Strategy that trades based on the Relative Strength Index (RSI) crossing a middle value.

The idea is to watch for the RSI to cross above or below a configurable level (default 50). When the indicator moves from below to above this level a long position is opened. When it crosses back below the level a short position is opened. Existing positions are exited on the opposite cross. Optional stop-loss, take-profit and trailing stop protect the trade.

Details

  • Entry Criteria: Buy when RSI crosses above the level. Sell when RSI crosses below.
  • Long/Short: Both directions.
  • Exit Criteria: Opposite cross or trailing stop.
  • Stops: Optional fixed stop-loss, take-profit and trailing stop.
  • Default Values:
    • RsiPeriod = 14
    • RsiLevel = 50
    • StopLoss = 100
    • TakeProfit = 200
    • TrailingStop = 0
    • CandleType = TimeSpan.FromMinutes(5)
  • Filters:
    • Category: Oscillator
    • Direction: Both
    • Indicators: RSI
    • Stops: Yes
    • Complexity: Basic
    • Timeframe: Intraday (5m)
    • 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>
/// RSI level crossing strategy.
/// </summary>
public class RsiValueStrategy : Strategy
{
	private readonly StrategyParam<int> _rsiPeriod;
	private readonly StrategyParam<decimal> _rsiLevel;
	private readonly StrategyParam<DataType> _candleType;

	private decimal _prevRsi;
	private bool _hasPrev;

	public int RsiPeriod { get => _rsiPeriod.Value; set => _rsiPeriod.Value = value; }
	public decimal RsiLevel { get => _rsiLevel.Value; set => _rsiLevel.Value = value; }
	public DataType CandleType { get => _candleType.Value; set => _candleType.Value = value; }

	public RsiValueStrategy()
	{
		_rsiPeriod = Param(nameof(RsiPeriod), 14)
			.SetGreaterThanZero()
			.SetDisplay("RSI Period", "RSI period", "Indicators");
		_rsiLevel = Param(nameof(RsiLevel), 50m)
			.SetDisplay("RSI Level", "RSI crossing level", "Indicators");
		_candleType = Param(nameof(CandleType), TimeSpan.FromHours(4).TimeFrame())
			.SetDisplay("Candle Type", "Candle type", "General");
	}

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

	protected override void OnReseted()
	{
		base.OnReseted();
		_prevRsi = 0;
		_hasPrev = false;
	}

	protected override void OnStarted2(DateTime time)
	{
		base.OnStarted2(time);

		var rsi = new RelativeStrengthIndex { Length = RsiPeriod };

		SubscribeCandles(CandleType)
			.Bind(rsi, ProcessCandle)
			.Start();
	}

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

		if (!_hasPrev)
		{
			_prevRsi = rsiVal;
			_hasPrev = true;
			return;
		}

		var crossUp = _prevRsi <= RsiLevel && rsiVal > RsiLevel;
		var crossDown = _prevRsi >= RsiLevel && rsiVal < RsiLevel;

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

		_prevRsi = rsiVal;
	}
}