forexpirate

Double Bollinger Bands Strategy

Double Bollinger Strategy. Price crosses inner BB (with increasing outer BB) long is placed. Long is closed when price closes below outer BB. Reversed for short. The numbers are tuned for NZDUSD 15min chart.

Pbin = percent on inner BB
Pbout = percent on outer BB

There are all kinds of other inputs, trailing stop, limit, etc.

Errors, questions, suggestions are wanted, thank you
Script open-source

Dans le véritable esprit de TradingView, l'auteur de ce script l'a publié en open-source, afin que les traders puissent le comprendre et le vérifier. Bravo à l'auteur! Vous pouvez l'utiliser gratuitement, mais la réutilisation de ce code dans une publication est régie par le règlement. Vous pouvez le mettre en favori pour l'utiliser sur un graphique.

Vous voulez utiliser ce script sur un graphique ?
//@version=2
strategy("BB Strat",default_qty_type = strategy.percent_of_equity, default_qty_value = 100,currency="USD",initial_capital=100, overlay=true)
l=input(title="length",defval=100)
pbin=input(type=float,step=.1,defval=.25)
pbout=input(type=float,step=.1,defval=1.5)
ma=sma(close,l)
sin=stdev(ma,l)*pbin
sout=stdev(ma,l)*pbout
inu=sin+ma
inb=-sin+ma
outu=sout+ma
outb=-sout+ma
plot(inu,color=lime)
plot(inb,color=lime)
plot(outu,color=red)
plot(outb,color=yellow)

inpTakeProfit = input(defval = 0, title = "Take Profit", minval = 0)
inpStopLoss = input(defval = 0, title = "Stop Loss", minval = 0)
inpTrailStop = input(defval = 0, title = "Trailing Stop Loss", minval = 0)
inpTrailOffset = input(defval = 0, title = "Trailing Stop Loss Offset", minval = 0)
useTakeProfit = inpTakeProfit >= 1 ? inpTakeProfit : na
useStopLoss = inpStopLoss >= 1 ? inpStopLoss : na
useTrailStop = inpTrailStop >= 1 ? inpTrailStop : na
useTrailOffset = inpTrailOffset >= 1 ? inpTrailOffset : na


longCondition = close>inu and rising(outu,1) 
exitlong = (open[1]>outu and close<outu) or crossunder(close,ma)

shortCondition = close<inb and falling(outb,1)
exitshort = (open[1]<outb and close>outb) or crossover(close,ma)

strategy.entry(id = "Long", long=true, when = longCondition)
strategy.close(id = "Long", when = exitlong)
strategy.exit("Exit Long", from_entry = "Long", profit = useTakeProfit, loss = useStopLoss, trail_points = useTrailStop, trail_offset = useTrailOffset, when=exitlong)

strategy.entry(id = "Short", long=false, when = shortCondition)
strategy.close(id = "Short", when = exitshort)
strategy.exit("Exit Short", from_entry = "Short", profit = useTakeProfit, loss = useStopLoss, trail_points = useTrailStop, trail_offset = useTrailOffset, when=exitshort)