# Can a study be made to calculate volume within a certain time bracket?

##### Well-known member
I'm always looking for ways to make my strategy more reliable and I have been interested in volume. Usually because of times when their is often liquidity a majority of the volume is traded within the first 3 and last 3 minutes of trading, I want to see if their is a correlation between volume traded outside of these liquidity points and continuation gap ups.

To do this I'd need a study that excludes volume traded within the first 3 minutes and last 3 minutes of trading, hopefully someone can help.

Code:
``````# Volumed - Aggregates time segmented volume blocks
# Farmin
# 7.16.2018

# Kickstart: DMonkey, UpTheCreek
# We discussed that daily volume vs summed volume aren't the same for equities

#hint:<b>Volumed</b>\nShows aggregated volume by market time segment - premarket, RTH and afterhours.  Use on a 30m chart or less.  All times are Eastern. N.B. Counts reset at midnight.

#Declarations
declare lower;
declare hide_on_daily;

#inputs
input Begin_precount_at = 0400;
input Stop_precount_before = 0930;
input Begin_mktcount_at = 0930;
input Stop_mktcount_before = 1600;
input Begin_aftrcount_at = 1600;
input Stop_aftrcount_before = 2000;

input show_labels = yes;
input debug = no;

#calcs
def v = if IsNaN(volume) then 0 else volume;
def na = Double.NaN;

def Count_Pre = SecondsFromTime(Begin_precount_at) >= 0
&& SecondsTillTime(Stop_precount_before) > 0;
def Count_Mkt = SecondsFromTime(Begin_mktcount_at) >= 0
&& SecondsTillTime(Stop_mktcount_before) > 0;
def Count_Aftr = SecondsFromTime(Begin_aftrcount_at) >= 0
&& SecondsTillTime(Stop_aftrcount_before) > 0;

def save_prior = GetDay() != GetDay()[1] ;

def Start_Counting_Pre = Count_Pre && !Count_Pre[1];

def Cum_Vol_Pre =
if save_prior && !Start_Counting_Pre
then 0
else if Start_Counting_Pre
then v
else if Count_Pre
then Cum_Vol_Pre[1] + v
else Cum_Vol_Pre[1];

def prior_pre = if save_prior then cum_Vol_pre[1] else prior_pre[1];

def Start_Counting_Mkt = Count_Mkt && !Count_Mkt[1];

def Cum_Vol_Mkt =
if save_prior && !Start_Counting_Mkt
then 0
else if Start_Counting_Mkt
then v
else if Count_Mkt
then Cum_Vol_Mkt[1] + v
else Cum_Vol_Mkt[1];

def prior_mkt = if save_prior then cum_Vol_Mkt[1] else prior_mkt[1];

def Start_Counting_Aftr = Count_Aftr && !Count_Aftr[1];

def Cum_Vol_Aftr =
if save_prior && !Start_Counting_Aftr
then 0
else if Start_Counting_Aftr
then v
else if Count_Aftr
then Cum_Vol_Aftr[1] + v
else Cum_Vol_Aftr[1];

def prior_aftr = if save_prior then cum_Vol_aftr[1] else prior_aftr[1];

#Plots
plot Cumulative_PreSession_Volume = if Count_Pre
then Cum_Vol_Pre
else na;
Cumulative_PreSession_Volume.setDefaultColor(color.DARK_ORANGE);
Cumulative_PreSession_Volume.SetPaintingStrategy(PaintingStrategy.HISTOGRAM);

plot Cumulative_MktSession_Volume = if Count_Mkt
then Cum_Vol_Mkt
else na;
Cumulative_MktSession_Volume.setDefaultColor(Color.YELLOW);
Cumulative_MktSession_Volume.SetPaintingStrategy(PaintingStrategy.HISTOGRAM);

plot Cumulative_AftrSession_Volume = if Count_Aftr
then Cum_Vol_Aftr
else na;
Cumulative_AftrSession_Volume.setDefaultColor(Color.MAGENTA);
Cumulative_AftrSession_Volume.SetPaintingStrategy(PaintingStrategy.HISTOGRAM);

AddChartBubble(SecondsTillTime(Stop_precount_before) == 0, Cum_Vol_Pre, Cum_Vol_Pre, Color.DARK_ORANGE, 1);

AddChartBubble(SecondsTillTime(Stop_mktcount_before) == 0, Cum_Vol_Mkt, Cum_Vol_Mkt, Color.YELLOW, 0);

AddChartBubble(GetDay() != GetDay()[-1], Cum_Vol_Aftr, Cum_Vol_Aftr, Color.MAGENTA, 1);

addlabel(show_labels, "PreVol: " + cum_Vol_Pre + " MktVol: " + cum_Vol_Mkt + " AfterVol: " + cum_Vol_Aftr + " = " + (cum_Vol_Pre + cum_Vol_Mkt + cum_Vol_Aftr) + " | Reported by Daily agg: " + volume(period = AggregationPeriod.Day), Color.LIGHT_GRAY );

addlabel(show_labels, "PreVol: " + prior_Pre + " MktVol: " + prior_Mkt + " AfterVol: " + prior_Aftr + " = " + (prior_Pre + prior_Mkt + prior_Aftr) + " | Reported by Daily agg: " + volume(period = AggregationPeriod.Day)[1], Color.GRAY );

###   End Code   ###``````

87k+ Posts
320 Online

## The Market Trading Game Changer

Join 2,500+ subscribers inside the useThinkScript VIP Membership Club
• Exclusive indicators
• Proven strategies & setups
• Private Discord community
• Exclusive members-only content
• 1 full year of unlimited support

What is useThinkScript?

useThinkScript is the #1 community of stock market investors using indicators and other tools to power their trading strategies. Traders of all skill levels use our forums to learn about scripting and indicators, help each other, and discover new ways to gain an edge in the markets.

How do I get started?

We get it. Our forum can be intimidating, if not overwhelming. With thousands of topics, tens of thousands of posts, our community has created an incredibly deep knowledge base for stock traders. No one can ever exhaust every resource provided on our site.

If you are new, or just looking for guidance, here are some helpful links to get you started.

What are the benefits of VIP Membership?