I normally don't publish my indicators. However, I couldn't find a smoothed stochastic on TradingView officially or unofficially. This is a standard implementation of a smoothed Fast Stochastic where %K and %D are calculated and then smoothed by n periods. This helps to reduce chop and gives better extreme signals.

I have defaulted the indicator to use commonly used settings where %K is over 14 periods, %D is over 7 period, and the smoothing factor is 3 periods. I have also defaulted the extreme lines to an upper band of 80, mid band of 50, and lower band of 20. However, my favorite settings are %K = 10, %D = 10, Smooth = 3, upper band = 75, mid band = 50, and lower band = 25.
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// Title: Smooth Stochastic
// Author: Kaleb Tuimala
// Date: 06/25/2016
// Description: A standard implementation of a smoothed Fast Stochastic.
//              The %K and %D are smoothed n periods after they are calculated.
study(title="KT_Smooth_Stochastic", shorttitle="Smooth Stochastic")
periodK = input(14, minval=1, title="%K")
periodD = input(7, minval=1, title="%D")
smooth = input(3, minval=1, title="Smooth")

k = stoch(close, high, low, periodK)
d = sma(k, periodD)

sK = sma(k, smooth)
sD = sma(d, smooth)

uL = hline(80, color=black, linestyle=solid, linewidth=2, title="Upper Line")
mL = hline(50, color=green, linestyle=solid, linewidth=2, title="Middle Line")
lL = hline(20, color=purple, linestyle=solid, linewidth=2, title="Lower Line")

fill(uL, lL, color=gray, transp=80, title="Shaded Region")

plot(sK, color=blue, linewidth=2, title="%K")
plot(sD, color=red, linewidth=2, title="%D")
Will this work for short expiry time like 5 or 15 minutes?
ktuimala PRO xavierl.rowe
It all depends on your rule set and how you use it. it will work on any time frame. I have used it on tick, minute, day, and week charts. My primary use of it is to signal bearish and bullish divergence and watching when it swings above and below the mid line to look for possible price patterns to trade. For me, it is purely a confirmation tool.
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