VWAP Stdev Bands
This indicator plots VWAP with 2x Standard Deviation bands. This could potentially be used to trade a mean reversion type strategy. Only works on intraday charts.
study("VWAP Stdev Bands", overlay=true)
devNum = input(2, title="Number of stdev")
newSession = iff(change(dayofweek), 1, 0)
vwapsum = iff(newSession, hl2*volume, vwapsum[1]+hl2*volume)
volumesum = iff(newSession, volume, volumesum[1]+volume)
v2sum = iff(newSession, volume*hl2*hl2, v2sum[1]+volume*hl2*hl2)
myvwap = vwapsum/volumesum
dev = sqrt(max(v2sum/volumesum - myvwap*myvwap, 0))
plot(myvwap, title="VWAP")
plot(myvwap + devNum * dev, title="VWAP Upper")
plot(myvwap - devNum * dev, title="VWAP Lower")