Premarket Volume Percentage of Daily Average

[webdementia]

I am looking for a script that would show the percentage of premarket volume vs. the average daily volume. I would like to have a scanner and also a watchlist column that would show the percentage of volume based on that same information. So if a stock typically trades at 1 million volume daily but has already done 750k in premarket at 5:00am then it would say 75%. Hope that makes sense. Not sure if anything like that exists.

 

[webdementia]

I am looking for a script that would show the percentage of premarket volume vs. the average daily volume. I would like to have a scanner and also a watchlist column that would show the percentage of volume based on that same information. So if a stock typically trades at 1 million volume daily but has already done 750k in premarket at 5:00am then it would say 75%. Hope that makes sense. Not sure if anything like that exists.

@BenTen Any ideas as to how this would work?

 

[dstair]

I have written code to show premarket volume and a tally day volume. This is untested on a trading day, you can use as a starting point. It works now.

Have fun, hope it helps

######################################################################################
# Script Name: Pre market Volume percent
# Author: Denver Stair
# 2/15/2026
# Version 1.1
######################################################################################

#Hint Gives user option to select to display todays volume, and pre/post market volume.  Shows pre / post market percent volume

declare lower;

input ShowTodaysVolume = yes; #hint ShowTodaysVolume: show todays volume label in study below
input ShowTodaysPreMrktVolume = yes; #hint ShowTodaysPreMrktVolume: show todays preMarPerVolPer / post market volume below
input aggregationPeriod = AggregationPeriod.MIN; #hint aggregationPeriod: Select time frame for your chart
input startTime = 0400;    #hint startTime: post market start time
input endTime = 0930;    #hint endTime: pre market end time

########################## Pre/Post Market Volume####################################

def CurPer = aggregationPeriod;
def startCounter = SecondsFromTime(startTime);
def endCounter = SecondsTillTime(endTime);
def targetPeriod = if startCounter >= 0 and endCounter >= 0 then 1 else 0;
rec volumeTotal = if targetPeriod and !targetPeriod[1] then volume(GetSymbol(), CurPer) else if targetPeriod then volumeTotal[1] + volume(GetSymbol(), CurPer) else volumeTotal[1];

####################################################################################
def DayVol = volume(period = “DAY”);
def preMarPerVolPer = volumeTotal / DayVol[1];

AddLabel(ShowTodaysVolume, "Vol Today: " + DayVol, Color.LIGHT_GRAY);
AddLabel(ShowTodaysPreMrktVolume, Concat("PreMrket Vol: ", volumeTotal), Color.VIOLET);
AddLabel(yes, "Pre Market Vol %: " + Round(preMarPerVolPer * 100, 1) + "%");