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Zero-Lag EMA Trend Following Strategy

Author: ChaoZhang, Date: 2023-09-20 14:30:03
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Overview

This is a typical trend following strategy. It uses fast and slow Zero-Lag EMA to determine trend direction, and incorporates mechanisms like trailing stop, take profit and pyramiding to follow trends.

Strategy Logic

  1. Calculate fast and slow Zero-Lag EMA using different smooth periods.

  2. Long signal is generated when fast EMA crosses above slow EMA, and short signal when fast EMA crosses below slow EMA.

  3. Set trailing stop line after entry to follow highest/lowest price for risk control.

  4. Take profit when price reaches certain percentage for profit taking.

  5. Use open counts for pyramiding similar to compound interest.

Advantage Analysis

  1. Zero-Lag EMA has less lag in responding to trend changes.

  2. Dual EMA strategy is simple and intuitive for directional judgement.

  3. Stop loss and take profit settings effectively control single trade loss.

  4. Pyramiding mechanism allows more profits when trend extends.

Risk Analysis

  1. Improper parameter settings may cause over-aggressive or over-conservative stop loss/take profit.

  2. Wrong trend indicator may miss trend change moments.

  3. Pyramiding can amplify total loss when trend reverses.

  4. Parameters need tuning for different products to avoid overfitting.

Improvement Directions

  1. Test different EMA periods to find better parameter combinations.

  2. Optimize stop/take ratios to balance profitability and risk control.

  3. Adjust pyramiding logic to limit max open count per direction.

  4. Add other technical indicators for entry filter to improve signal quality.

  5. Disable trading during specific hours to avoid wrong signal-prone periods.

  6. Test parameters separately on different products to improve robustness.

Summary

The strategy shows overall stable running with decent risk-adjusted returns. It can be further improved via parameter optimization, auxiliary filtration etc. Also need to watch out potential signal errors in certain market conditions. Overall this strategy has a sound framework and shows potential to become a steady profitable trend following strategy after continuous refinements.


//@version=3
// Learn more about Autoview and how you can automate strategies like this one here: https://autoview.with.pink/
strategy("MP ZeroLag EMA", "MP 0 Strat", overlay=true, pyramiding=0, initial_capital=100000, currency=currency.USD, default_qty_type = strategy.percent_of_equity, default_qty_value = 100, commission_type=strategy.commission.percent, commission_value=0.1)
 
//bgcolor ( color=black, transp=40, title='Blackground', editable=true)
 
///////////////////////////////////////////////
//* Backtesting Period Selector | Component *//
///////////////////////////////////////////////
 
testStartYear = input(2018, "Backtest Start Year")
testStartMonth = input(3, "Backtest Start Month")
testStartDay = input(1, "Backtest Start Day")
testPeriodStart = timestamp(testStartYear,testStartMonth,testStartDay,00,00)
 
testStopYear = input(77777777, "Backtest Stop Year")
testStopMonth = input(11, "Backtest Stop Month")
testStopDay = input(15, "Backtest Stop Day")
testPeriodStop = timestamp(testStopYear,testStopMonth,testStopDay,0,0)
 
testPeriod() => true
 
/////////////////////////////////////
//* Put your strategy logic below *//
/////////////////////////////////////
 
// === INPUTS ===
zlmaSource      = input(defval = close, title = "ZeroLag EMA Source")
zlmaFastLength  = input(defval = 8, title = "ZeroLag EMA Fast Length")
zlmaSlowLength  = input(defval = 21, title = "ZeroLag EMA Slow Length")

// === /INPUTS ===
 
// === SERIES SETUP ===
// Fast ZeroLag EMA
zema1=ema(zlmaSource, zlmaFastLength)
zema2=ema(zema1, zlmaFastLength)
c1=zema1-zema2
zlemaFast=zema1+c1
 
// Slow ZeroLag EMA
zema3=ema(zlmaSource, zlmaSlowLength)
zema4=ema(zema3, zlmaSlowLength)
c2=zema3-zema4
zlemaSlow=zema3+c2
 
// Plots and Conditions
plot(zlemaFast, title='Fast ZeroLag EMA', color = yellow, linewidth=4)
plot(zlemaSlow, title='Slow ZeroLag EMA', color = fuchsia, linewidth=4)

 
// Long/Short Logic
longLogic = crossover(zlemaFast,zlemaSlow) ? 1 : 0
shortLogic = crossunder(zlemaFast,zlemaSlow) ? 1 : 0
 
//////////////////////////
//* Strategy Component *//
//////////////////////////
 
isLong = input(false, "Longs Only")
isShort = input(false, "Shorts Only")
isFlip = input(false, "Flip the Opens")
 
long = longLogic
short = shortLogic
 
if isFlip
    long := shortLogic
    short := longLogic
else
    long := longLogic
    short := shortLogic
 
if isLong
    long := long
    short := na
 
if isShort
    long := na
    short := short
   
////////////////////////////////
//======[ Signal Count ]======//
////////////////////////////////
 
sectionLongs = 0
sectionLongs := nz(sectionLongs[1])
sectionShorts = 0
sectionShorts := nz(sectionShorts[1])
 
if long
    sectionLongs := sectionLongs + 1
    sectionShorts := 0
 
if short
    sectionLongs := 0
    sectionShorts := sectionShorts + 1
 
//////////////////////////////
//======[ Pyramiding ]======//
//////////////////////////////
 
pyrl = input(1, "Pyramiding less than") // If your count is less than this number
pyre = input(0, "Pyramiding equal to") // If your count is equal to this number
pyrg = input(1000000, "Pyramiding greater than") // If your count is greater than this number
 
longCondition = long and sectionLongs <= pyrl or long and sectionLongs >= pyrg or long and sectionLongs == pyre ? 1 : 0
shortCondition = short and sectionShorts <= pyrl or short and sectionShorts >= pyrg or short and sectionShorts == pyre ? 1 : 0
 
////////////////////////////////
//======[ Entry Prices ]======//
////////////////////////////////
 
last_open_longCondition = na
last_open_shortCondition = na
last_open_longCondition := longCondition ? close : nz(last_open_longCondition[1])
last_open_shortCondition := shortCondition ? close : nz(last_open_shortCondition[1])
 
////////////////////////////////////
//======[ Open Order Count ]======//
////////////////////////////////////
 
sectionLongConditions = 0
sectionLongConditions := nz(sectionLongConditions[1])
sectionShortConditions = 0
sectionShortConditions := nz(sectionShortConditions[1])
 
if longCondition
    sectionLongConditions := sectionLongConditions + 1
    sectionShortConditions := 0
 
if shortCondition
    sectionLongConditions := 0
    sectionShortConditions := sectionShortConditions + 1
   
///////////////////////////////////////////////
//======[ Position Check (long/short) ]======//
///////////////////////////////////////////////
 
last_longCondition = na
last_shortCondition = na
last_longCondition := longCondition ? time : nz(last_longCondition[1])
last_shortCondition := shortCondition ? time : nz(last_shortCondition[1])
 
in_longCondition = last_longCondition > last_shortCondition
in_shortCondition = last_shortCondition > last_longCondition
 
/////////////////////////////////////
//======[ Position Averages ]======//
/////////////////////////////////////
 
totalLongs = 0.0
totalLongs := nz(totalLongs[1])
totalShorts = 0.0
totalShorts := nz(totalShorts[1])
averageLongs = 0.0
averageLongs := nz(averageLongs[1])
averageShorts = 0.0
averageShorts := nz(averageShorts[1])
 
if longCondition
    totalLongs := totalLongs + last_open_longCondition
    totalShorts := 0.0
 
if shortCondition
    totalLongs := 0.0
    totalShorts := totalShorts + last_open_shortCondition
 
averageLongs := totalLongs / sectionLongConditions
averageShorts := totalShorts / sectionShortConditions
 
/////////////////////////////////
//======[ Trailing Stop ]======//
/////////////////////////////////
 
isTS = input(false, "Trailing Stop")
tsi = input(1300, "Activate Trailing Stop Price (%). Divided by 100 (1 = 0.01%)") / 100
ts = input(400, "Trailing Stop (%). Divided by 100 (1 = 0.01%)") / 100
 
last_high = na
last_low = na
last_high_short = na
last_low_short = na
last_high := not in_longCondition ? na : in_longCondition and (na(last_high[1]) or high > nz(last_high[1])) ? high : nz(last_high[1])
last_high_short := not in_shortCondition ? na : in_shortCondition and (na(last_high[1]) or high > nz(last_high[1])) ? high : nz(last_high[1])
last_low := not in_shortCondition ? na : in_shortCondition and (na(last_low[1]) or low < nz(last_low[1])) ? low : nz(last_low[1])
last_low_short := not in_longCondition ? na : in_longCondition and (na(last_low[1]) or low < nz(last_low[1])) ? low : nz(last_low[1])
 
long_ts = isTS and not na(last_high) and low <= last_high - last_high / 100 * ts and longCondition == 0 and last_high >= averageLongs + averageLongs / 100 * tsi
short_ts = isTS and not na(last_low) and high >= last_low + last_low / 100 * ts and shortCondition == 0 and last_low <= averageShorts - averageShorts/ 100 * tsi
 
///////////////////////////////
//======[ Take Profit ]======//
///////////////////////////////
 
isTP = input(true, "Take Profit")
tp = input(300, "Take Profit (%). Divided by 100 (1 = 0.01%)") / 100
long_tp = isTP and close > averageLongs + averageLongs / 100 * tp and not longCondition
short_tp = isTP and close < averageShorts - averageShorts / 100 * tp and not shortCondition
 
/////////////////////////////
//======[ Stop Loss ]======//
/////////////////////////////
 
isSL = input(false, "Stop Loss")
sl = input(750, "Stop Loss (%). Divided by 100 (1 = 0.01%)") / 100
long_sl = isSL and close < averageLongs - averageLongs / 100 * sl and longCondition == 0
short_sl = isSL and close > averageShorts + averageShorts / 100 * sl and shortCondition == 0
 
/////////////////////////////////
//======[ Close Signals ]======//
/////////////////////////////////
 
longClose = long_tp or long_sl or long_ts  ? 1 : 0
shortClose = short_tp or short_sl or short_ts ? 1: 0
 
///////////////////////////////
//======[ Plot Colors ]======//
///////////////////////////////
 
longCloseCol = na
shortCloseCol = na
longCloseCol := long_tp ? purple : long_sl ? maroon : long_ts ? blue : longCloseCol[1]
shortCloseCol := short_tp ? purple : short_sl ? maroon : short_ts ? blue : shortCloseCol[1]
tpColor = isTP and in_longCondition ? purple : isTP and in_shortCondition ? purple : white
slColor = isSL and in_longCondition ? red : isSL and in_shortCondition ? red : white
 
//////////////////////////////////
//======[ Strategy Plots ]======//
//////////////////////////////////
 
plot(isTS and in_longCondition ? averageLongs + averageLongs / 100 * tsi : na, "Long Trailing Activate", blue, style=3, linewidth=2)
plot(isTS and in_longCondition and last_high >= averageLongs +  averageLongs / 100 * tsi ? last_high - last_high / 100 * ts : na, "Long Trailing", fuchsia, style=2, linewidth=3)
plot(isTS and in_shortCondition ? averageShorts - averageShorts/ 100 * tsi : na, "Short Trailing Activate", blue, style=3, linewidth=2)
plot(isTS and in_shortCondition and last_low <= averageShorts - averageShorts/ 100 * tsi ? last_low + last_low / 100 * ts : na, "Short Trailing", fuchsia, style=2, linewidth=3)
plot(isTP and in_longCondition and last_high < averageLongs + averageLongs / 100 * tp ? averageLongs + averageLongs / 100 * tp : na, "Long TP", tpColor, style=3, linewidth=2)
plot(isTP and in_shortCondition and last_low > averageShorts - averageShorts / 100 * tp ? averageShorts - averageShorts / 100 * tp : na, "Short TP", tpColor, style=3, linewidth=2)
plot(isSL and in_longCondition and last_low_short > averageLongs - averageLongs / 100 * sl ? averageLongs - averageLongs / 100 * sl : na, "Long SL", slColor, style=3, linewidth=2)
plot(isSL and in_shortCondition and last_high_short < averageShorts + averageShorts / 100 * sl ? averageShorts + averageShorts / 100 * sl : na, "Short SL", slColor, style=3, linewidth=2)
 
///////////////////////////////
//======[ Alert Plots ]======//
///////////////////////////////
 
// Old Signal Plots
//plot(longCondition, "Long", green)
//plot(shortCondition, "Short", red)
//plot(longClose, "Long Close", longCloseCol)
//plot(shortClose, "Short Close", shortCloseCol)
 
 
// New Signal Plots
//plotshape(series=longCondition, title="Long", style=shape.triangleup, location=location.belowbar, color=green, size=size.tiny)
//plotshape(series=shortCondition, title="Short", style=shape.triangledown, location=location.abovebar, color=red, size=size.tiny)
//plotshape(series=longClose, title="Long Close", style=shape.triangleup, location=location.belowbar, color=blue, size=size.tiny)
//plotshape(series=shortClose, title="Short Close", style=shape.triangledown, location=location.abovebar, color=purple, size=size.tiny)
 
//alertcondition(condition=longCondition, title="Long", message="")
//alertcondition(condition=shortCondition, title="Short", message="")
//alertcondition(condition=longClose, title="Long Close", message="")
//alertcondition(condition=shortClose, title="Short Close", message="")
 
///////////////////////////////////
//======[ Reset Variables ]======//
///////////////////////////////////
 
if longClose or not in_longCondition
    averageLongs := 0
    totalLongs := 0.0
    sectionLongs := 0
    sectionLongConditions := 0
 
if shortClose or not in_shortCondition
    averageShorts := 0
    totalShorts := 0.0
    sectionShorts := 0
    sectionShortConditions := 0
 
////////////////////////////////////////////
//======[ Strategy Entry and Exits ]======//
////////////////////////////////////////////
 
if testPeriod()
    strategy.entry("Long", 1, when=longCondition)
    strategy.entry("Short", 0,  when=shortCondition)
    strategy.close("Long", when=longClose)
    strategy.close("Short", when=shortClose)
    
    
//////NEW STUFF

//temainput  = input(24, minval=1, title="Fast TEMA")
//hullinput = input(39, minval=1, title="Slow hullMA")
//rmainput = input(48, minval=1, title="RMA (BB Signal)")
//bblength = input(20, minval=1, title="BB Length")
//mult = input(1.5, minval=0.001, maxval=50, title="BB stdev Mult")
//src = input(defval=close, type=source, title="Source")

//Moving Average Params

//hullMA
//hullma = wma(2*wma(close, hullinput/2)-wma(close, hullinput), round(sqrt(hullinput)))

//TEMA
//ema = ema(close, temainput)
//ema1 = ema(ema, temainput)
//ema2 = ema(ema1, temainput)
//tema = 3 * (ema - ema1) + ema2

//RMA
//rma = ema(close, 96)

//BB
//basis = sma(tema, bblength)
//dev = mult * stdev(tema, bblength)
//upper = basis + dev
//lower = basis - dev

//Color Swaps
//ribbon = tema>=hullma ? #c0fff4 : #ffbcc8
//bandcolor = rma>=basis ? #ffbcc8 : #c0fff4


//Plots
//plot(basis, title="Bollinger Band Basis", color=red, transp=0)
//upband = plot(upper, color=#ffbcc8, transp=100, editable=false)
//downband = plot(lower, color=#ffbcc8, transp=100, editable=false)

//Fills
//temap = plot(tema, title="TEMA", color=white, transp=100, editable=false)
//emap = plot(hullma, title="EMA", color=white, transp=100, editable=false)
//fill (temap, emap, color=ribbon, title="MA Ribbon", transp=50)
//fill(upband, downband, title="Bollinger Band Background", color=bandcolor)

///////END NEW

///--------New, DW Art----------

//Period
per = input(defval=34, title="Lookback Period")

//Current Resolution
res = input(defval=30, title="Resolution")

//Deviations
ndev = input(defval=7, minval=0, maxval=7, title="Number of Fibonacci Volatility Deviations")

//----------------------------------------------------------------------------------------------------------------------------------------------------------------
//Definitions
//----------------------------------------------------------------------------------------------------------------------------------------------------------------

//Source
src  = close
dsrc = high - low

//Periods Per Annum
ppa = (1440/res)*365

//Periodic Volatility
Si = log(close/close[1])
Sm = avg(Si, per)
pv = (sqrt((sum(pow((Si - Sm), 2), per))/(per*ppa)))

//Price Geometric Moving Averages
lmean = log(src)
smean = sum(lmean,per)
gma   = exp(smean/per)
lmeand = log(dsrc)
smeand = sum(lmeand,per)
gmad   = exp(smeand/per)

//Deviations
dev  = gmad*pv
ud1  = gma + dev
dd1  = gma - dev
ud2  = gma + dev*2
dd2  = gma - dev*2
ud3  = gma + dev*3
dd3  = gma - dev*3
ud5  = gma + dev*5
dd5  = gma - dev*5
ud8  = gma + dev*8
dd8  = gma - dev*8
ud13 = gma + dev*13
dd13 = gma - dev*13
ud21 = gma + dev*21
dd21 = gma - dev*21
u1  = (ndev==1) or (ndev==2) or (ndev==3) or (ndev==4) or (ndev==5) or (ndev==6) or (ndev==7) ? ud1 : na
d1  = (ndev==1) or (ndev==2) or (ndev==3) or (ndev==4) or (ndev==5) or (ndev==6) or (ndev==7) ? dd1 : na
u2  = (ndev==2) or (ndev==3) or (ndev==4) or (ndev==5) or (ndev==6) or (ndev==7) ? ud2 : na
d2  = (ndev==2) or (ndev==3) or (ndev==4) or (ndev==5) or (ndev==6) or (ndev==7) ? dd2 : na
u3  = (ndev==3) or (ndev==4) or (ndev==5) or (ndev==6) or (ndev==7) ? ud3 : na
d3  = (ndev==3) or (ndev==4) or (ndev==5) or (ndev==6) or (ndev==7) ? dd3 : na
u5  = (ndev==4) or (ndev==5) or (ndev==6) or (ndev==7) ? ud5 : na
d5  = (ndev==4) or (ndev==5) or (ndev==6) or (ndev==7) ? dd5 : na
u8  = (ndev==5) or (ndev==6) or (ndev==7) ? ud8 : na
d8  = (ndev==5) or (ndev==6) or (ndev==7) ? dd8 : na
u13 = (ndev==6) or (ndev==7) ? ud13 : na
d13 = (ndev==6) or (ndev==7) ? dd13 : na
u21 = (ndev==7) ? ud21 : na
d21 = (ndev==7) ? dd21 : na

//----------------------------------------------------------------------------------------------------------------------------------------------------------------
//Plots
//----------------------------------------------------------------------------------------------------------------------------------------------------------------

//GMA
gp = plot(gma, color=black, title="GMA")

//Deviations
u21p = plot(u21, color=lime, title="Upper Deviation x 21", transp=100)
u13p = plot(u13, color=lime, title="Upper Deviation x 13", transp=100)
u8p  = plot(u8,  color=lime, title="Upper Deviation x 8",  transp=100)
u5p  = plot(u5,  color=lime, title="Upper Deviation x 5",  transp=100)
u3p  = plot(u3,  color=lime, title="Upper Deviation x 3",  transp=100)
u2p  = plot(u2,  color=lime, title="Upper Deviation x 2",  transp=100)
u1p  = plot(u1,  color=lime, title="Uper Deviation",       transp=100)
d1p  = plot(d1,  color=red,  title="Lower Deviation",      transp=100)
d2p  = plot(d2,  color=red,  title="Lower Deviation x 2",  transp=100)
d3p  = plot(d3,  color=red,  title="Lower Deviation x 3",  transp=100)
d5p  = plot(d5,  color=red,  title="Lower Deviation x 5",  transp=100)
d8p  = plot(d8,  color=red,  title="Lower Deviation x 8",  transp=100)
d13p = plot(d13, color=red,  title="Lower Deviation x 13", transp=100)
d21p = plot(d21, color=red,  title="Lower Deviation x 21", transp=100)

//Fills
fill(u21p, gp, color=silver, transp=90)
fill(u13p, gp, color=silver, transp=90)
fill(u8p, gp,  color=silver, transp=90)
fill(u5p, gp,  color=silver, transp=90)
fill(u3p, gp,  color=silver, transp=90)
fill(u2p, gp,  color=silver, transp=90)
fill(u1p, gp,  color=silver, transp=90)
fill(d1p, gp,  color=silver,  transp=90)
fill(d2p, gp,  color=silver,  transp=90)
fill(d3p, gp,  color=silver,  transp=90)
fill(d5p, gp,  color=silver,  transp=90)
fill(d8p, gp,  color=silver,  transp=90)
fill(d13p, gp, color=silver,  transp=90)
fill(d21p, gp, color=silver,  transp=90)
    

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