ChaoZhang
Overview
This strategy uses the Williams Fractal indicator to identify price peaks and troughs and combines ABCD patterns to determine trend direction. It enters a position after confirming the trend in order to follow medium-term trends for profit.
Strategy Logic
Use the Williams Fractal indicator to identify price peaks and troughs. Different patterns are used to determine bullish or bearish ABCD patterns.
ABCD pattern identification criteria:
The distance between AB and CD is similar, and the distance between BC and CD meets certain proportional requirements (between 0.382-0.886 and 1.13-2.618).
D point lower than C point is a bullish pattern. D point higher than C point is a bearish pattern.
Use the barssince function to determine which direction’s Fractal is closer to current to judge the overall trend direction.
Enter long/short after identifying ABCD pattern, and set stop loss and take profit to follow medium-term trends.
Advantage Analysis
Williams Fractal indicator helps identify turning points more accurately.
ABCD pattern criteria is simple and reliable, easy to automate.
Judging major trend direction with barssince avoids losses from false breakouts.
Following trends with stop loss and take profit after entry.
Risk Analysis
Williams Fractal may lag and miss turning points causing losses.
Multiple overlapping ABCD patterns may cause misidentification on medium-term charts.
Wrong major trend direction increases risk of being trapped in medium-term trades.
Stop loss too tight may get stopped out easily. Stop loss too wide may cause poor tracking.
Possible solutions:
Test other indicators to assist in identifying turning points more effectively.
Optimize ABCD pattern parameters to make identification more strict and reliable.
Improve major trend identification to avoid wrong directional bias.
Test different stop loss/take profit ratios to find optimal points.
Optimization Directions
Test MACD, KDJ and other indicators to improve entry signals accuracy.
Optimize parameters based on different products and timeframes to find optimal stop loss/take profit levels.
Optimize bar lookback periods to find best parameter combinations according to changing market conditions.
Add moving averages etc to filter signals and improve stability.
Introduce machine learning algorithms and more data to improve pattern recognition accuracy.
Summary
The strategy logic is clear and reliable overall, using Williams Fractal and ABCD patterns to determine medium-term trend direction, combining with trend filtering, stop loss and take profit to follow trends for profit. There is still much room for optimization in areas like entry signals, parameter tuning, trend identification etc to make it adaptable to different market conditions. As a discretionary + quant combo model, it has strong practical value.
/*backtest
start: 2023-09-16 00:00:00
end: 2023-09-23 00:00:00
period: 45m
basePeriod: 5m
exchanges: [{"eid":"Futures_Binance","currency":"BTC_USDT"}]
*/
// @version=4
// @author=Daveatt - BEST
// ABCD Pattern Strat
StrategyName = "BEST ABCD Pattern Strategy"
ShortStrategyName = "BEST ABCD Pattern Strategy"
// strategy(title=StrategyName, shorttitle=ShortStrategyName, overlay=true,
// pyramiding=2, default_qty_value=100, precision=7, currency=currency.USD,
// commission_value=0.2,commission_type=strategy.commission.percent, initial_capital=1000000,
// default_qty_type=strategy.fixed)
filterBW = input(false, title="filter Bill Williams Fractals?")
///////////////////////////////////////////////////////////////////////////////
///////////////////////////////////////////////////////////////////////////////
///////////////////////////////// UTILITIES ///////////////////////////////////
///////////////////////////////////////////////////////////////////////////////
///////////////////////////////////////////////////////////////////////////////
// ||-----------------------------------------------------------------------------------------------------||
// ||--- Fractal Recognition Functions: ---------------------------------------------------------------||
isRegularFractal(mode, _high, _low) =>
ret = mode == 1 ? _high[4] < _high[3] and _high[3] < _high[2] and _high[2] > _high[1] and _high[1] > _high[0] :
mode == -1 ? _low[4] > _low[3] and _low[3] > _low[2] and _low[2] < _low[1] and _low[1] < _low[0] : false
isBWFractal(mode, _high, _low) =>
ret = mode == 1 ? _high[4] < _high[2] and _high[3] <= _high[2] and _high[2] >= _high[1] and _high[2] > _high[0] :
mode == -1 ? _low[4] > _low[2] and _low[3] >= _low[2] and _low[2] <= _low[1] and _low[2] < _low[0] : false
///////////////////////////////////////////////////////////////////////////////
///////////////////////////////////////////////////////////////////////////////
////////////////////////////// ABCD PATTERN ///////////////////////////////////
///////////////////////////////////////////////////////////////////////////////
///////////////////////////////////////////////////////////////////////////////
f_abcd()=>
_r = timeframe.period
_g = barmerge.gaps_off
_l = barmerge.lookahead_on
_high = high
_low = low
filteredtopf = filterBW ? isRegularFractal(1, _high, _low) : isBWFractal(1, _high, _low)
filteredbotf = filterBW ? isRegularFractal(-1, _high, _low) : isBWFractal(-1, _high, _low)
// ||--- ZigZag:
istop = filteredtopf
isbot = filteredbotf
topcount = barssince(istop)
botcount = barssince(isbot)
zigzag = (istop and topcount[1] > botcount[1] ? _high[2] :
isbot and topcount[1] < botcount[1] ? _low[2] : na)
x = valuewhen(zigzag, zigzag, 4)
a = valuewhen(zigzag, zigzag, 3)
b = valuewhen(zigzag, zigzag, 2)
c = valuewhen(zigzag, zigzag, 1)
d = valuewhen(zigzag, zigzag, 0)
xab = (abs(b-a)/abs(x-a))
xad = (abs(a-d)/abs(x-a))
abc = (abs(b-c)/abs(a-b))
bcd = (abs(c-d)/abs(b-c))
// ABCD Part
_abc = abc >= 0.382 and abc <= 0.886
_bcd = bcd >= 1.13 and bcd <= 2.618
_bull_abcd = _abc and _bcd and d < c
_bear_abcd = _abc and _bcd and d > c
_bull = _bull_abcd and not _bull_abcd[1]
_bear = _bear_abcd and not _bear_abcd[1]
[_bull, _bear, zigzag]
lapos_x = timenow + round(change(time)*12)
[isLong, isShort, zigzag] = f_abcd()
plot(zigzag, title= 'ZigZag', color=color.black, offset=-2)
plotshape(isLong, style=shape.labelup, location=location.belowbar, color=color.new(color.green, 0), size=size.normal, text="ABCD", textcolor=color.white)
plotshape(isShort, style=shape.labeldown, location=location.abovebar, color=color.new(color.maroon, 0), size=size.normal, text="ABCD", textcolor=color.white)
long_entry_price = valuewhen(isLong, close, 0)
short_entry_price = valuewhen(isShort, close, 0)
sinceNUP = barssince(isLong)
sinceNDN = barssince(isShort)
buy_trend = sinceNDN > sinceNUP
sell_trend = sinceNDN < sinceNUP
//////////////////////////
//* Profit Component *//
//////////////////////////
//////////////////////////// MinTick ///////////////////////////
fx_pips_value = syminfo.type == "forex" ? syminfo.mintick*10 : 1
input_tp_pips = input(100, "Backtest Profit Goal (in USD)",minval=0)*fx_pips_value
input_sl_pips = input(20, "Backtest STOP Goal (in USD)",minval=0)*fx_pips_value
tp = buy_trend? long_entry_price + input_tp_pips : short_entry_price - input_tp_pips
sl = buy_trend? long_entry_price - input_sl_pips : short_entry_price + input_sl_pips
plot_tp = buy_trend and high[1] <= tp ? tp : sell_trend and low[1] <= tp ? tp : na
plot_sl = buy_trend and low[1] >= sl ? sl : sell_trend and high[1] >= sl ? sl : na
plot(plot_tp, title="TP", style=plot.style_circles, linewidth=3, color=color.blue)
plot(plot_sl, title="SL", style=plot.style_circles, linewidth=3, color=color.red)
longClose = isShort
shortClose = isLong
strategy.entry("Long", 1, when=isLong)
// strategy.close("Long", when=longClose )
strategy.exit("XL","Long", limit=tp, when=buy_trend, stop=sl)
strategy.entry("Short", 0, when=isShort)
// strategy.close("Short", when=shortClose )
strategy.exit("XS","Short", when=sell_trend, limit=tp, stop=sl)