Strategi Perdagangan Pembalikan Penembusan Volatiliti adalah strategi perdagangan pembalikan yang mengesan saluran harga dengan titik stop profit dan stop loss bergerak adaptif. Ia menubuhkan kedudukan panjang atau pendek apabila harga keluar dari saluran yang dikira berdasarkan turun naik.
Strategi ini mula-mula menggunakan penunjuk Julat Benar Purata (ATR) Wilder untuk mengukur turun naik harga. Ia kemudian mengira Constant Julat Purata (ARC) berdasarkan nilai ATR. ARC mewakili separuh lebar saluran harga. Seterusnya, jalur atas dan bawah saluran dikira sebagai titik berhenti keuntungan dan titik berhenti kerugian, juga dikenali sebagai titik SAR. Apabila harga melanggar band atas, kedudukan pendek dibuka. Apabila harga melanggar band bawah, kedudukan panjang dibuka.
Secara khusus, ATR di atas N bar terakhir dikira terlebih dahulu. ATR kemudian dikalikan dengan faktor untuk mendapatkan ARC, yang mengawal lebar saluran harga. Menambah ARC ke harga penutupan tertinggi di atas N bar memberikan jalur atas saluran, atau SAR tinggi. Mengurangkan ARC dari harga penutupan terendah memberikan jalur bawah, atau SAR rendah. Jika harga ditutup di atas jalur atas, kedudukan pendek diambil. Jika harga ditutup di bawah jalur bawah, kedudukan panjang diambil.
Penyelesaian:
Strategi Perdagangan Pembalikan Penembusan Volatiliti menggunakan saluran untuk mengesan perubahan harga dan membalikkan kedudukan apabila lonjakan turun naik. Ia berfungsi dengan baik di pasaran terhad dengan pembalikan, menghasilkan pulangan yang baik jika titik pembalikan dikenal pasti dengan tepat.
/*backtest start: 2023-02-12 00:00:00 end: 2024-02-18 00:00:00 period: 1d basePeriod: 1h exchanges: [{"eid":"Futures_Binance","currency":"BTC_USDT"}] */ //@version=3 //@author=LucF // Volatility System [LucF] // v1.0, 2019.04.14 // The Volatility System was created by Welles Wilder. // It first appeared in his seminal masterpiece "New Concepts in Technical Trading Systems" (1978). // He describes it on pp.23-26, in the chapter discussing the first presentation ever of the "Volatility Index", // which later became known as ATR. // Performance of the strategy usually increases with the time frame. // Tuning of ATR length and, especially, the ARC factor, is key. // This code runs as a strategy, which cannot generate alerts. // If you want to use the alerts it must be converted to an indicator. // To do so: // 1. Swap the following 2 lines by commenting the first and uncommenting the second. // 2. Comment out the last 4 lines containing the strategy() calls. // 3. Save. strategy(title="Volatility System by Wilder [LucF]", shorttitle="Volatility System [Strat]", overlay=true, precision=8, pyramiding=0, initial_capital=100000, default_qty_type=strategy.percent_of_equity, default_qty_value=100, commission_type=strategy.commission.percent, commission_value=0.1) // study("Volatility System by Wilder [LucF]", shorttitle="Volatility System", precision=8, overlay=true) // -------------- Colors MyGreenRaw = color(#00FF00,0), MyGreenMedium = color(#00FF00,50), MyGreenDark = color(#00FF00,75), MyGreenDarkDark = color(#00FF00,92) MyRedRaw = color(#FF0000,0), MyRedMedium = color(#FF0000,30), MyRedDark = color(#FF0000,75), MyRedDarkDark = color(#FF0000,90) // -------------- Inputs LongsOnly = input(false,"Longs only") ShortsOnly = input(false,"Shorts only") AtrLength = input(9, "ATR length", minval=2) ArcFactor = input(1.8, "ARC factor", minval=0, type=float,step=0.1) ShowSAR = input(false, "Show all SARs (Stop & Reverse)") HideSAR = input(false, "Hide all SARs") ShowTriggers = input(false, "Show Entry/Exit triggers") ShowTradedBackground = input(false, "Show Traded Background") FromYear = input(defval = 2000, title = "From Year", minval = 1900) FromMonth = input(defval = 1, title = "From Month", minval = 1, maxval = 12) FromDay = input(defval = 1, title = "From Day", minval = 1, maxval = 31) ToYear = input(defval = 9999, title = "To Year", minval = 1900) ToMonth = input(defval = 1, title = "To Month", minval = 1, maxval = 12) ToDay = input(defval = 1, title = "To Day", minval = 1, maxval = 31) // -------------- Date range filtering FromDate = timestamp(FromYear, FromMonth, FromDay, 00, 00) ToDate = timestamp(ToYear, ToMonth, ToDay, 23, 59) TradeDateIsAllowed() => true // -------------- Calculate Stop & Reverse (SAR) points using Average Range Constant (ARC) Arc = atr(AtrLength)*ArcFactor SarLo = highest(close, AtrLength)-Arc SarHi = lowest(close, AtrLength)+Arc // -------------- Entries/Exits InLong = false InShort = false EnterLong = TradeDateIsAllowed() and not InLong[1] and crossover(close, SarHi[1]) EnterShort = TradeDateIsAllowed() and not InShort[1] and crossunder(close, SarLo[1]) InLong := (InLong[1] and not EnterShort[1]) or (EnterLong[1] and not ShortsOnly) InShort := (InShort[1] and not EnterLong[1]) or (EnterShort[1] and not LongsOnly) // -------------- Plots // SAR points plot( not HideSAR and ((InShort or EnterLong) or ShowSAR)? SarHi:na, color=MyRedMedium, style=circles, linewidth=2, title="SAR High") plot( not HideSAR and ((InLong or EnterShort) or ShowSAR)? SarLo:na, color=MyGreenMedium, style=circles, linewidth=2, title="SAR Low") // Entry/Exit markers plotshape( ShowTriggers and not ShortsOnly and EnterLong, style=shape.triangleup, location=location.belowbar, color=MyGreenRaw, size=size.small, text="") plotshape( ShowTriggers and not LongsOnly and EnterShort, style=shape.triangledown, location=location.abovebar, color=MyRedRaw, size=size.small, text="") // Exits when printing only longs or shorts plotshape( ShowTriggers and ShortsOnly and InShort[1] and EnterLong, style=shape.triangleup, location=location.belowbar, color=MyRedMedium, transp=70, size=size.small, text="") plotshape( ShowTriggers and LongsOnly and InLong[1] and EnterShort, style=shape.triangledown, location=location.abovebar, color=MyGreenMedium, transp=70, size=size.small, text="") // Background bgcolor( color=ShowTradedBackground? InLong and not ShortsOnly?MyGreenDarkDark: InShort and not LongsOnly? MyRedDarkDark:na:na) // ---------- Alerts alertcondition( EnterLong or EnterShort, title="1. Reverse", message="Reverse") alertcondition( EnterLong, title="2. Long", message="Long") alertcondition( EnterShort, title="3. Short", message="Short") // ---------- Strategy reversals strategy.entry("Long", strategy.long, when=EnterLong and not ShortsOnly) strategy.entry("Short", strategy.short, when=EnterShort and not LongsOnly) strategy.close("Short", when=EnterLong and ShortsOnly) strategy.close("Long", when=EnterShort and LongsOnly)