PreMarket Gap from Previous Close for ThinkorSwim

[MerryDay]

Hello. I found Mobius's scan (script below). Can someone help me change it?
I want a gap scanner (yesterday's close to premarket price). I want to find stocks that Gap Up and down.

Did you ever figure this out?

# Scan PreMarket: Scan for 1 Percent gap from Previous Close
# Scan at 5 min aggregation or less
# Mobius
# Chat Room Request

def PrevClose = if SecondsTillTime(1555) == 0 and
SecondsFromTime(1555) == 0
then close
else PrevClose[1];
def ScanActive = if SecondsTillTime(0930) >= 0 and
SecondsFromTime(0730) > 0
then 1
else 0;
def ll = if ScanActive and !ScanActive[1]
then low
else if !ScanActive
then double.nan
else if ScanActive and low < ll[1]
then low
else ll[1];
def hh = if ScanActive and !ScanActive[1]
then high
else if !ScanActive
then double.nan
else if ScanActive and high > hh[1]
then high
else hh[1];
# Comment out (#) Plot NOT wanted
plot gapUP = if ScanActive and ll > PrevClose * 1.01
then 1
else 0;
#plot gapDN = if ScanActive and hh < PrevClose * .99
# then 1
# else 0;

 

[darkejo]

Sorry about the late reply. Yes, here you are:

#Wizard text: The
#Wizard input: price
#Wizard text: has moved
#Wizard input: percent_change
#Wizard text: %  in after hours trading

input closing_time = 1559;
input open_time = 0930;
input price = close;
input percent_change = 1.00; Modify this to find % change


def time_until_close = SecondsTillTime(closing_time);
def time_until_open = SecondsTillTime(open_time);
def closing_bell = time_until_close == 0;
rec closing_price = CompoundValue(1, if closing_bell then price else closing_price[1], price);
def after_closing_bell = time_until_close <= 0;
def before_opening_bell = time_until_open  >= 0  ;
def afterhours_percent_change = 100 * (price / closing_price - 1);
def meet_scan_criteria;


    meet_scan_criteria = afterhours_percent_change >= percent_change;


plot scan = (after_closing_bell or before_opening_bell) AND meet_scan_criteria;

 

[rayk]

Can this be used to find past 1 year gaps? Im trying to find stocks with 20% gaps for the past 1 year.

 

[MerryDay]

Can this be used to find past 1 year gaps? Im trying to find stocks with 20% gaps for the past 1 year.

No, this in an intraday indicator. The logic / syntax would not apply to a daily indicator. You would need to start a new thread for something like that.

 

[evanevans]

This script goes kind of wonky once the opening bell happens.
Anybody know how to make this premarket scan show the premarket results all day unchanged until presumedly midnight? Reason is, I want to be able to know:
a) of course during premarket, what stocks are gapping which this script does
but also,
b) see what they are during the market day
and
c) know what they were for evening analysis

Right now, once the market opens, this script goes kind of bonkers and by after hours / evening it's not the same list of stocks it was in premarket. A gap is a gap. It should show what the gaps of the day are and have been, all day long until the next morning premarket and there are new ones.

Any help on what the modifications could be?