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FullDump BB RSI Strategy

A multi-step Bollinger Bands and RSI system converted from the MT5 "FullDump" expert advisor. The strategy waits for momentum exhaustion, confirms a mean-reversion bias with Bollinger Bands, and only trades when price realigns with the middle band. Trade management mirrors the original EA with fixed stop-loss/target offsets and a break-even adjustment when price returns to the opposite band.

Overview

  • Markets: Any liquid instrument that supports Bollinger Bands and RSI.
  • Timeframe: Configurable candle type (default 15 minutes).
  • Direction: Long and short.
  • Order Type: Market orders with predefined protective levels.
  • Concept: Fade short-term extremes inside the Bollinger envelope while price reverts toward the middle band.

Trading Logic

  1. RSI scan (Step 1)
    • Long condition requires at least one RSI reading below 30 within the recent window.
    • Short condition requires at least one RSI reading above 70 within the same lookback.
  2. Band violation (Step 2)
    • Long: current close must be below or equal to any of the recent lower band values.
    • Short: current close must be above or equal to any of the recent upper band values.
  3. Middle band alignment (Step 3)
    • Long trades only trigger once price closes back above the Bollinger middle line.
    • Short trades require the close to be below the middle line.
  4. Entry execution
    • When all conditions match and no position is open in that direction, a market order is sent for the configured volume.

Risk Management

  • Stop-loss: Placed below (long) or above (short) the extreme low/high of the lookback window minus/plus the configured indent offset.
  • Take-profit: Placed at the current opposite Bollinger band plus the same indent offset.
  • Break-even rule: Once price touches the opposite band, the stop-loss is moved to the entry price to secure the position.
  • Position exit: Positions close when price breaches the stop-loss or take-profit levels; opposite signals flatten the current position before flipping direction.

Parameters

Name Description Default Notes
BandsPeriod Length of the Bollinger Bands calculation. 20 Optimizable (10 → 40 step 1).
RsiPeriod Averaging length for the RSI. 14 Optimizable (7 → 21 step 1).
Depth Number of recent candles inspected for conditions. 6 Optimizable (3 → 12 step 1).
IndentInPoints Offset in price steps added to stop-loss and take-profit. 10 Optimizable (5 → 30 step 5).
OrderVolume Order size in lots. 1 Used for both entries and exits.
CandleType Timeframe of the input candles. 15-minute candles Change to adapt the strategy horizon.

Filters & Tags

  • Category: Mean reversion, volatility bands.
  • Indicators: Bollinger Bands, Relative Strength Index.
  • Stops: Hard stop, hard target, break-even adjustment.
  • Complexity: Intermediate (multi-condition logic with stateful management).
  • Automation Level: Fully automated entries and exits.
  • Best Use: Range-bound phases where Bollinger extremes often revert toward the median.

Notes

  • The indent offset is scaled by the instrument price step to match the pip-based logic of the original EA.
  • The algorithm keeps queues of the recent indicator values to replicate the MT5 depth checks exactly.
  • Ensure the instrument provides enough historical candles to initialize both RSI and Bollinger Bands before live trading.
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>
/// FullDump BB RSI strategy (simplified). Uses RSI oversold/overbought
/// with EMA trend filter for mean reversion entries.
/// </summary>
public class FullDumpBbRsiStrategy : Strategy
{
	private readonly StrategyParam<DataType> _candleType;
	private readonly StrategyParam<int> _rsiPeriod;
	private readonly StrategyParam<int> _emaPeriod;

	public DataType CandleType
	{
		get => _candleType.Value;
		set => _candleType.Value = value;
	}

	public int RsiPeriod
	{
		get => _rsiPeriod.Value;
		set => _rsiPeriod.Value = value;
	}

	public int EmaPeriod
	{
		get => _emaPeriod.Value;
		set => _emaPeriod.Value = value;
	}

	public FullDumpBbRsiStrategy()
	{
		_candleType = Param(nameof(CandleType), TimeSpan.FromHours(4).TimeFrame())
			.SetDisplay("Candle Type", "Candles", "General");

		_rsiPeriod = Param(nameof(RsiPeriod), 14)
			.SetGreaterThanZero()
			.SetDisplay("RSI Period", "RSI averaging period", "Indicators");

		_emaPeriod = Param(nameof(EmaPeriod), 20)
			.SetGreaterThanZero()
			.SetDisplay("EMA Period", "Trend filter EMA", "Indicators");
	}

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

		var rsi = new RelativeStrengthIndex { Length = RsiPeriod };
		var ema = new ExponentialMovingAverage { Length = EmaPeriod };

		var subscription = SubscribeCandles(CandleType);
		subscription
			.Bind(rsi, ema, (ICandleMessage candle, decimal rsiValue, decimal emaValue) =>
			{
				if (candle.State != CandleStates.Finished)
					return;

				if (!IsFormedAndOnlineAndAllowTrading())
					return;

				var close = candle.ClosePrice;

				// RSI oversold => buy
				if (rsiValue < 25m && Position <= 0)
					BuyMarket();
				// RSI overbought => sell
				else if (rsiValue > 75m && Position >= 0)
					SellMarket();
				// Trend following on EMA cross
				else if (close > emaValue && rsiValue > 60m && rsiValue < 70m && Position <= 0)
					BuyMarket();
				else if (close < emaValue && rsiValue < 40m && rsiValue > 30m && Position >= 0)
					SellMarket();
			})
			.Start();

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