Strategi Stop Loss Berbasis TFO dan ATR

Penulis:ChaoZhang, Tanggal: 2023-12-04 13:32:41
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Gambaran umum

Strategi ini dirancang berdasarkan indikator Dr. John Ehlers' Trend Flex Oscillator (TFO) dan Average True Range (ATR). Strategi ini cocok untuk pasar bull dan akan membuka posisi panjang ketika aksi harga oversold tampaknya berbalik. Strategi ini biasanya menutup posisi dalam beberapa hari kecuali terjebak dalam pasar bear, dalam hal ini bertahan. Strategi ini menyederhanakan backtesting dengan membuat parameter dapat dikonfigurasi, tetapi hasil backtest tidak pernah harus sepenuhnya dipercaya.

Logika Strategi

Strategi ini menggabungkan indikator TFO dan ATR untuk menentukan masuk dan keluar.

Kondisi masuk: Ketika TFO turun di bawah ambang batas (menunjukkan tingkat oversold) dan TFO telah naik dari bar sebelumnya (menunjukkan pembalikan TFO ke atas), dan ATR berada di atas ambang batas volatilitas yang ditetapkan (menunjukkan peningkatan volatilitas pasar), posisi panjang dibuka.

Kondisi keluar: Ketika TFO naik di atas ambang batas (menunjukkan tingkat overbought) dan ATR di atas ambang batas yang ditetapkan, semua posisi panjang ditutup. Selain itu, stop loss trailing keluar dari semua posisi ketika harga turun di bawah level stop trailing. Pengguna dapat memilih untuk membiarkan strategi keluar berdasarkan sinyal indikator atau hanya berdasarkan stop loss.

Strategi ini memungkinkan hingga 15 posisi panjang secara bersamaan. Parameter dapat disesuaikan untuk jangka waktu yang berbeda.

Keuntungan

  1. Kombinasi analisis tren dan volatilitas memberikan sinyal yang stabil. TFO menangkap sinyal pembalikan tren awal dan ATR mengidentifikasi lonjakan volatilitas.

  2. Parameter masuk, keluar dan stop loss yang dapat disesuaikan memberikan fleksibilitas. Pengguna dapat mengoptimalkan berdasarkan kondisi pasar.

  3. Stop loss terintegrasi melindungi dari gerakan ekstrem. Stop loss sangat penting dalam perdagangan kuantum.

  4. Dukungan untuk piramida dan keluar parsial memungkinkan komposit keuntungan di pasar bull.

Risiko

  1. Hanya panjang, tidak ada mekanisme shorting, tidak bisa mendapatkan keuntungan dari pasar yang jatuh, pasar bear yang parah bisa menyebabkan kerugian besar.

  2. Penyesuaian parameter yang buruk dapat menyebabkan over trading atau entries dan exit yang terlewatkan. pengujian ekstensif diperlukan untuk menemukan parameter optimal.

  3. Dalam gerakan ekstrim, stop loss bisa gagal dan tidak mencegah kerugian besar.

  4. Backtest tidak sepenuhnya mencerminkan kinerja langsung.

Peluang Peningkatan

  1. Garis stop loss bergerak dapat ditambahkan untuk keluar tepat waktu dan perlindungan penurunan yang lebih baik.

  2. Mekanisme shorting dapat ditambahkan untuk memungkinkan keuntungan selama penurunan pasar ketika TFO berbalik ke bawah dan ATR cukup tinggi.

  3. Lebih banyak filter seperti perubahan volume dapat mengurangi dampak pergerakan harga yang tidak menentu.

  4. Kerangka waktu dan parameter yang berbeda dapat diuji untuk menemukan kombinasi kinerja terbaik.

Kesimpulan

Strategi ini menggabungkan kekuatan analisis tren dan volatilitas menggunakan TFO dan ATR untuk menentukan arah pasar. Mekanisme seperti piramiding, penutupan parsial dan stop loss trailing memungkinkan komposit keuntungan sambil mengendalikan risiko selama pasar bull. Ada ruang untuk perbaikan melalui lebih banyak filter indikator dan optimasi parameter.


/*backtest
start: 2022-11-27 00:00:00
end: 2023-12-03 00:00:00
period: 1d
basePeriod: 1h
exchanges: [{"eid":"Futures_Binance","currency":"BTC_USDT"}]
*/

// This source code is subject to the terms of the Mozilla Public License 2.0 at https://mozilla.org/MPL/2.0/
// © Chart0bserver 
//
// Open Source attributions:
// portions © allanster (date window code)
// portions © Dr. John Ehlers (Trend Flex Oscillator)
//
// READ THIS CAREFULLY!!! ----------------//
// This code is provided for educational purposes only.  The results of this strategy should not be considered investment advice.
// The user of this script acknolwedges that it can cause serious financial loss when used as a trading tool
// This strategy has a bias for HODL (Holds on to Losses) meaning that it provides NO STOP LOSS protection! 
// Also note that the default behavior is designed for up to 15 open long orders, and executes one order to close them all at once. 
// Opening a long position is predicated on The Trend Flex Oscillator (TFO) rising after being oversold, and ATR above a certain volatility threshold.
// Closing a long is handled either by TFO showing overbought while above a certain ATR level, or the Trailing Stop Loss.  Pick one or both.
// If the strategy is allowed to sell before a Trailing Stop Loss is triggered, you can set a "must exceed %".  Do not mistake this for a stop loss.
// Short positions are not supported in this version.  Back-testing should NEVER be considered an accurate representation of actual trading results.

//@version=5
strategy('TFO + ATR Strategy with Trailing Stop Loss', 'TFO ATR Trailing Stop Loss', overlay=true, pyramiding=15, default_qty_type=strategy.cash, default_qty_value=10000, initial_capital=150000, currency='USD', commission_type=strategy.commission.percent, commission_value=0.5)
strategy.risk.allow_entry_in(strategy.direction.long)  // There will be no short entries, only exits from long.

// -----------------------------------------------------------------------------------------------------------//
// Back-testing Date Range code  ----------------------------------------------------------------------------//
// ---------------------------------------------------------------------------------------------------------//
fromMonth = input.int(defval=9, title='From Month', minval=1, maxval=12, group='Back-Testing Start Date')
fromDay = input.int(defval=1, title='From Day', minval=1, maxval=31, group='Back-Testing Start Date')
fromYear = input.int(defval=2021, title='From Year', minval=1970, group='Back-Testing Start Date')
thruMonth = 1       //input(defval = 1,    title = "Thru Month",      type = input.integer, minval = 1, maxval = 12, group="Back-Testing Date Range")
thruDay = 1         //input(defval = 1,    title = "Thru Day",        type = input.integer, minval = 1, maxval = 31, group="Back-Testing Date Range")
thruYear = 2112     //input(defval = 2112, title = "Thru Year",       type = input.integer, minval = 1970, group="Back-Testing Date Range")

// === FUNCTION EXAMPLE ===
start = timestamp(fromYear, fromMonth, fromDay, 00, 00)  // backtest start window
finish = timestamp(thruYear, thruMonth, thruDay, 23, 59)  // backtest finish window
window() =>  // create function "within window of time
    time >= start and time <= finish ? true : false
// Date range code -----//



// -----------------------------------------------------------------------------------------------------------//
// ATR Indicator Code  --------------------------------------------------------------------------------------//
// ---------------------------------------------------------------------------------------------------------//
length = 18  //input(title="ATR Length", defval=18, minval=1)
Period = 18  //input(18,title="ATR EMA Period")  

basicEMA = ta.ema(close, length)
ATR_Function = ta.ema(ta.tr(true), length)
EMA_ATR = ta.ema(ATR_Function, Period)
ATR = ta.ema(ta.tr(true), length)
ATR_diff = ATR - EMA_ATR
volatility = 100 * ATR_diff / EMA_ATR  // measure of spread between ATR and EMA
volatilityAVG = math.round((volatility + volatility[1] + volatility[2]) / 3)
buyVolatility = input.int(3, 'Min Volatility for Buy', minval=-20, maxval=20, step=1, group='Average True Range')
sellVolatility = input.int(13, 'Min Volatility for Sell', minval=-10, maxval=20, step=1, group='Average True Range')
useAvgVolatility = input.bool(defval=false, title='Average the Volatility over 3 bars', group='Average True Range')
// End of ATR  ------------/


// -----------------------------------------------------------------------------------------------------------//
// TFO Indicator code  --------------------------------------------------------------------------------------//
// ---------------------------------------------------------------------------------------------------------//
trendflex(Series, PeriodSS, PeriodTrendFlex, PeriodEMA) =>
    var SQRT2xPI = math.sqrt(8.0) * math.asin(1.0)  // 4.44288293815 Constant
    alpha = SQRT2xPI / PeriodSS
    beta = math.exp(-alpha)
    gamma = -beta * beta
    delta = 2.0 * beta * math.cos(alpha)
    float superSmooth = na
    superSmooth := (1.0 - delta - gamma) * (Series + nz(Series[1])) * 0.5 + delta * nz(superSmooth[1]) + gamma * nz(superSmooth[2])
    E = 0.0
    for i = 1 to PeriodTrendFlex by 1
        E += superSmooth - nz(superSmooth[i])
        E
    epsilon = E / PeriodTrendFlex
    zeta = 2.0 / (PeriodEMA + 1.0)
    float EMA = na
    EMA := zeta * epsilon * epsilon + (1.0 - zeta) * nz(EMA[1])
    return_1 = EMA == 0.0 ? 0.0 : epsilon / math.sqrt(EMA)
    return_1

upperLevel = input.float(1.2, 'TFO Upper Level', minval=0.1, maxval=2.0, step=0.1, group='Trend Flex Ocillator')
lowerLevel = input.float(-0.9, 'TFO Lower Level', minval=-2.0, maxval=-0.1, step=0.1, group='Trend Flex Ocillator')
periodTrendFlex = input.int(14, 'TrendFlex Period', minval=2, group='Trend Flex Ocillator')
useSuperSmootherOveride = true  //input( true, "Apply SuperSmoother Override Below*", input.bool, group="Trend Flex Ocillator")
periodSuperSmoother = 8.0       //input(8.0, "SuperSmoother Period*", input.float  , minval=4.0, step=0.5, group="Trend Flex Ocillator")
postSmooth = 33                 //input(33.0, "Post Smooth Period**", input.float  , minval=1.0, step=0.5, group="Trend Flex Ocillator")

trendFlexOscillator = trendflex(close, periodSuperSmoother, periodTrendFlex, postSmooth)
// End of TFO -------------//


// -----------------------------------------------------------------------------------------------------------//
// HODL Don't sell if losing n% ---------------------------------------------------------------------------- //
// ---------------------------------------------------------------------------------------------------------// 
sellOnStrategy = input.bool(defval=true, title='Allow Stategy to close positions', group='Selling Conditions')
doHoldLoss = true       // input(defval = true, title = "Strategy can sell for a loss", type = input.bool, group="Selling Conditions")
holdLoss = input.int(defval=0, title='Value (%) must exceed ', minval=-25, maxval=10, step=1, group='Selling Conditions')
totalInvest = strategy.position_avg_price * strategy.position_size
openProfitPerc = strategy.openprofit / totalInvest
bool acceptableROI = openProfitPerc * 100 > holdLoss
// -----------------------//



// -----------------------------------------------------------------------------------------------------------//
// Buying and Selling conditions  -------------------------------------------------------------------------- //
// ---------------------------------------------------------------------------------------------------------//    
if useAvgVolatility
    volatility := volatilityAVG
    volatility
tfoBuy = trendFlexOscillator < lowerLevel and trendFlexOscillator[1] < trendFlexOscillator  // Always make a purchase if TFO is in this lowest range
atrBuy = volatility > buyVolatility
tfoSell = ta.crossunder(trendFlexOscillator, upperLevel)
consensusBuy = tfoBuy and atrBuy
consensusSell = tfoSell and volatility > sellVolatility
if doHoldLoss
    consensusSell := consensusSell and acceptableROI
    consensusSell
// --------------------//



// -----------------------------------------------------------------------------------------------------------//
// Tracing & Debugging --------------------------------------------------------------------------------------//
// ---------------------------------------------------------------------------------------------------------//

plotchar(strategy.opentrades, 'Number of open trades', ' ', location.top)
plotarrow(100 * openProfitPerc, 'Profit on open longs', color.new(color.green, 75), color.new(color.red, 75))
// plotchar(strategy.position_size, "Shares on hand", " ", location.top)
// plotchar(totalInvest, "Total Invested", " ", location.top)
// plotarrow(strategy.openprofit, "Open profit dollar amount", color.new(color.green,100), color.new(color.red, 100))
// plotarrow(strategy.netprofit, "Net profit for session", color.new(color.green,100), color.new(color.red, 100))
// plotchar(acceptableROI, "Acceptable ROI", " ", location.top)
// plotarrow(volatility, "ATR volatility value", color.new(color.green,75), color.new(color.red, 75))
// plotchar(strategy.position_avg_price, "Avgerage price of holdings", " ", location.top)
// plotchar(volatilityAVG, "AVG volatility", " ", location.top)
// plotchar(fiveBarsVal, "change in 5bars", " ", location.top)
// plotchar(crossingUp, "crossingUp", "x",  location.belowbar, textcolor=color.white)
// plotchar(crossingDown, "crossingDn", "x",  location.abovebar, textcolor=color.white)
// plotchar(strategy.closedtrades, "closedtrades", " ", location.top)
// plotchar(strategy.wintrades, "wintrades", " ", location.top)
// plotchar(strategy.losstrades, "losstrades", " ", location.top)
// plotchar(close, "close", " ", location.top)
//--------------------//

// -----------------------------------------------------------------------------------------------------------//
// Trade Alert Execution ------------------------------------------------------------------------------------//
// ---------------------------------------------------------------------------------------------------------//

strategy.entry('long', strategy.long, when=window() and consensusBuy, comment='long')
if sellOnStrategy
    strategy.close('long', when=window() and consensusSell, qty_percent=100, comment='Strat')


// -----------------------------------------------------------------------------------------------------------//
// Trailing Stop Loss logic -------------------------------------------------------------------------------- //
// ---------------------------------------------------------------------------------------------------------//    
useTrailStop = input.bool(defval=true, title='Set Trailing Stop Loss on avg positon value', group='Selling Conditions')
arm = input.float(defval=15, title='Trailing Stop Arms At (%)', minval=1, maxval=30, step=1, group='Selling Conditions') * 0.01
trail = input.float(defval=2, title='Trailing Stop Loss (%)', minval=0.25, maxval=9, step=0.25, group='Selling Conditions') * 0.1

longStopPrice = 0.0
stopLossPrice = 0.0

if strategy.position_size > 0
    longStopPrice := strategy.position_avg_price * (1 + arm)
    stopLossPrice := strategy.position_avg_price * ((100 - math.abs(holdLoss)) / 100)  // for use with 'stop' in strategy.exit
    stopLossPrice
else
    longStopPrice := close
    longStopPrice

// If you want to hide the Trailing Stop Loss threshold (green line), comment this out
plot(longStopPrice, 'Arm Trail Stop at', color.new(color.green, 60), linewidth=2)

if strategy.position_size > 0 and useTrailStop
    strategy.exit('exit', 'long', when=window(), qty_percent=100, trail_price=longStopPrice, trail_offset=trail * close / syminfo.mintick, comment='Trail')

//-----------------------------------------------------------------------------------------------------------//



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