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Tweezer Top Strategy

The Tweezer Top mirrors the bottom version but appears after an advance. Two candles share nearly the same high, showing that buyers could not push beyond a certain level.

Testing indicates an average annual return of about 187%. It performs best in the stocks market.

The strategy opens a short once the second candle confirms the ceiling, expecting a pullback as bullish momentum stalls.

A tight stop above the twin highs keeps risk in check and the trade exits if price climbs back above that resistance.

Details

  • Entry Criteria: pattern match
  • Long/Short: Both
  • Exit Criteria: stop-loss or opposite signal
  • Stops: Yes, percent based
  • Default Values:
    • CandleType = 15 minute
    • TolerancePercent = 0.1
    • StopLossPercent = 2 The strategy only sells. The stop lies StopLossPercent above the highest high of the pattern and the position closes when a candle closes above it.
  • Filters:
    • Category: Pattern
    • Direction: Both
    • Indicators: Candlestick
    • Stops: Yes
    • Complexity: Intermediate
    • Timeframe: Intraday
    • 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>
/// Tweezer Top strategy.
/// While flat it sells after a bullish candle followed by a bearish one whose high is within TolerancePercent of the first high.
/// The stop lies StopLossPercent above the pattern's highest high, and a close beyond it closes the position.
/// </summary>
public class TweezerTopStrategy : Strategy
{
	private readonly StrategyParam<decimal> _tolerancePercent;
	private readonly StrategyParam<decimal> _stopLossPercent;
	private readonly StrategyParam<DataType> _candleType;

	private readonly List<ICandleMessage> _candles = [];
	private decimal _stopPrice;

	/// <summary>
	/// How close the two extremes must be, in percent of the first.
	/// </summary>
	public decimal TolerancePercent
	{
		get => _tolerancePercent.Value;
		set => _tolerancePercent.Value = value;
	}

	/// <summary>
	/// Distance of the stop beyond the pattern, in percent.
	/// </summary>
	public decimal StopLossPercent
	{
		get => _stopLossPercent.Value;
		set => _stopLossPercent.Value = value;
	}

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

	/// <summary>
	/// Constructor.
	/// </summary>
	public TweezerTopStrategy()
	{
		_tolerancePercent = Param(nameof(TolerancePercent), 0.1m)
			.SetNotNegative()
			.SetDisplay("Tolerance %", "How close the two extremes must be, in percent of the first", "Pattern");

		_stopLossPercent = Param(nameof(StopLossPercent), 2m)
			.SetNotNegative()
			.SetDisplay("Stop Loss %", "Distance of the stop beyond the pattern, in percent", "Risk");

		_candleType = Param(nameof(CandleType), TimeSpan.FromMinutes(15).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();
		_candles.Clear();
		_stopPrice = default;
	}

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

		_candles.Clear();
		_stopPrice = default;

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

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

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

		_candles.Add(candle);

		if (_candles.Count > 2)
			_candles.RemoveAt(0);

		if (!IsFormedAndOnlineAndAllowTrading())
			return;

		if (Position < 0)
		{
			if (candle.ClosePrice >= _stopPrice)
				BuyMarket(-Position);

			return;
		}

		if (Position != 0 || _candles.Count < 2)
			return;

		var c0 = _candles[0];
		var c1 = _candles[1];

		if (!(c0.ClosePrice > c0.OpenPrice && c1.ClosePrice < c1.OpenPrice && Math.Abs(c0.HighPrice - c1.HighPrice) <= c0.HighPrice * TolerancePercent / 100m))
			return;

		SellMarket(Volume);
		_stopPrice = Math.Max(c0.HighPrice, c1.HighPrice) * (1 + StopLossPercent / 100m);
	}
}