Nick Name: chuck, you can also try this.
Make sure your column is set to an intraday aggregation and extended hours is checked on.
#begin #Hint: Displays After Hours & Pre Market change as a percentage in custom column. #WaterFrontTrader #07/20/12: Initital Release #08/13/12: Fixed to include pre-market and extended session #"Show Extended Session" should be active on your chart def Post = secondsFromTime(1600); def Pre = secondsTillTime(930); def Closed = Post >=0 or Pre>=0; def DayClose = if (Post>=0,close(period = "Day"),close(period = "Day")); #NN note:modified close to use ask def Change = close(priceType = "ASK") - DayClose; def Percent = round(((close - DayClose)/DayClose)*100); plot change1 = percent; change1.assignValueColor (color.BLACK); assignBackgroundColor(if close< dayclose then color.red else if close>dayclose then color.green else color.current); #end
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