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Bollinger Bands Standard Deviation Breakout Strategi

Penulis:ChaoZhang, Tanggal: 2023-11-21 17:14:04
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Gambaran umum

Strategi ini didasarkan pada indikator Bollinger Bands klasik. Ini akan panjang ketika harga ditutup di atas band atas dan akan pendek ketika harga ditutup di bawah band bawah. Ini termasuk dalam tren setelah strategi breakout.

Logika Strategi

Garis dasar adalah rata-rata bergerak sederhana 55 hari.
Band atas dan bawah adalah satu standar deviasi di atas dan di bawah garis dasar masing-masing.
Sinyal panjang dihasilkan ketika harga ditutup di atas band atas.
Sinyal pendek dihasilkan ketika harga ditutup di bawah band bawah.
Menggunakan satu standar deviasi alih-alih dua standar deviasi klasik mengurangi risiko.

Analisis Keuntungan

Menggunakan standar deviasi alih-alih nilai tetap mengurangi risiko.
Rata-rata bergerak 55 hari dapat lebih mencerminkan tren jangka menengah.
Pelarian dekat menyaring keluar pelarian palsu.
Mudah untuk menentukan arah tren melalui analisis multi-frame waktu.

Analisis Risiko

cenderung menghasilkan keuntungan kecil.
Perlu mempertimbangkan dampak dari biaya transaksi.
Sinyal breakout mungkin palsu.
Mungkin terjadi kehilangan slippage.

Risiko dapat dikurangi dengan menetapkan stop loss, mempertimbangkan biaya transaksi, atau menambahkan filter indikator.

Arahan Optimasi

Mengoptimalkan parameter dasar untuk menemukan rata-rata bergerak terbaik.
Optimalkan ukuran standar deviasi untuk menemukan parameter optimal.
Tambahkan indikator volume tambahan untuk penilaian.
Tambahkan mekanisme stop loss.

Ringkasan

Logika keseluruhan dari strategi ini jelas. Ini menyesuaikan risiko melalui lebar band standar deviasi dan menghindari false breakout menggunakan close breakout. Tapi masih perlu untuk mencegah kerugian berosilasi dengan menggunakan stop loss, menambahkan filter dll.

/*backtest
start: 2023-11-13 00:00:00
end: 2023-11-20 00:00:00
period: 1m
basePeriod: 1m
exchanges: [{"eid":"Futures_Binance","currency":"BTC_USDT"}]
*/

//@version=4

//┌───── •••• ─────┐//
//   TradeChartist  //
//└───── •••• ─────┘//

//Bollinger Bands is a classic indicator that uses a simple moving average of 20 periods along with upper and lower bands that are 2 standard deviations away from the basis line. 
//These bands help visualize price volatility and trend based on where the price is in relation to the bands.

//This Bollinger Bands filter plots a long signal when price closes above the upper band and plots a short signal when price closes below the lower band. 
//It doesn't take into account any other parameters such as Volume/RSI/fundamentals etc, so user must use discretion based on confirmations from another indicator or based on fundamentals.

//This filter's default is 55 SMA and 1 standard deviation, but can be changed based on asset type

//It is definitely worth reading the 22 rules of Bollinger Bands written by John Bollinger. 


strategy(shorttitle="BB Breakout Strategy", title="Bollinger Bands Filter", overlay=true, 
             pyramiding=1, currency=currency.NONE , 
             initial_capital = 10000, default_qty_type = strategy.percent_of_equity, 
             default_qty_value=100, calc_on_every_tick= true, process_orders_on_close=false)

src         = input(close, title = "Source")
length      = input(55, minval=1, title = "SMA length")// 20 for classis Bollinger Bands SMA line (basis)


mult        = input(1., minval=0.236, maxval=2, title="Standard Deviation")//2 for Classic Bollinger Bands //Maxval = 2 as higher the deviation, higher the risk
basis       = sma(src, length)
dev         = mult * stdev(src,length)

CC          = input(true, "Color Bars")


upper       = basis + dev
lower       = basis - dev

//Conditions for Long and Short - Extra filter condition can be used such as RSI or CCI etc.

short       = src<lower// and rsi(close,14)<40
long        = src>upper// and rsi(close,14)>60

L1          = barssince(long)
S1          = barssince(short)

longSignal  = L1<S1 and not (L1<S1)[1]
shortSignal = S1<L1 and not (S1<L1)[1]

//Plots and Fills



////Long/Short shapes with text
// plotshape(S1<L1 and not (S1<L1)[1]?close:na, text = "sᴇʟʟ", textcolor=#ff0100, color=#ff0100, style=shape.triangledown, size=size.small, location=location.abovebar, transp=0, title = "SELL", editable = true)
// plotshape(L1<S1 and not (L1<S1)[1]?close:na, text = "ʙᴜʏ", textcolor = #008000, color=#008000, style=shape.triangleup, size=size.small, location=location.belowbar, transp=0, title = "BUY", editable = true)  


// plotshape(shortSignal?close:na, color=#ff0100, style=shape.triangledown, size=size.small, location=location.abovebar, transp=0, title = "Short Signal", editable = true)
// plotshape(longSignal?close:na, color=#008000, style=shape.triangleup, size=size.small, location=location.belowbar, transp=0, title = "Long Signal", editable = true)  



p1          = plot(upper, color=#ff0000, display=display.all, transp=75, title = "Upper Band")
p2          = plot(lower, color=#008000, display=display.all, transp=75, title = "Lower Band")


p           = plot(basis, color=L1<S1?#008000:S1<L1?#ff0000:na, linewidth=2, editable=false, title="Basis")


fill(p,p1, color=color.teal, transp=85, title = "Top Fill") //fill for basis-upper
fill(p,p2, color=color.orange, transp=85, title = "Bottom Fill")//fill for basis-lower


//Barcolor

bcol        = src>upper?color.new(#8ceb07,0): 
             src<lower?color.new(#ff0000,0):
             src>basis?color.green:
             src<basis?color.red:na


barcolor(CC?bcol:na, editable=false, title = "Color Bars")



// //Alerts ----  // Use 'Once per bar close'

// alertcondition(condition=longSignal, title="Long - BB Filter", message='BB Filter Long @ {{close}}') // Use 'Once per bar close'
// alertcondition(condition=shortSignal, title="Short - BB Filter", message='BB Filter Short @ {{close}}')  // Use 'Once per bar close'

Notestart1 = input(true, "╔═══ Time Range to BackTest ═══╗") 


// === INPUT BACKTEST RANGE ===
FromMonth = input(defval=1, title="From Month", minval=1, maxval=12)
FromDay = input(defval=1, title="From Day", minval=1, maxval=31)
FromYear = input(defval=2018, title="From Year", minval=2015)
ToMonth = input(defval=1, title="To Month", minval=1, maxval=12)
ToDay = input(defval=1, title="To Day", minval=1, maxval=31)
ToYear = input(defval=9999, title="To Year", minval=2010)

// === FUNCTION EXAMPLE === 
start = timestamp(FromYear, FromMonth, FromDay, 00, 00)  // backtest start window
finish = timestamp(ToYear, ToMonth, ToDay, 23, 59)  // backtest finish window
window() =>  // create function "within window of time"
    time >= start and time <= finish ? true : false 

if(window())
    strategy.entry("Long", long=true, when =  longSignal)
    // strategy.close("Long", when = (short and S3==0), comment = "Close Long")

if(window())
    strategy.entry("Short", long=false, when = shortSignal)
    // strategy.close("Short", when = (long and L3==0), comment = "Close Short")

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