15% change for Pre Market and after hour trading

[8twofive9]

Hello Im looking for a script that can alert me of a 15% change outside the regular trading hours. I'am new to the thinkorswim platform and the scanner I have doesn't do it job after hours; and so I would kindly appreciate if anyone has something like this or can lead me to post that does. Also would it be possible for the stocks listed to be under $5? Thanks again

 

[halcyonguy]

Hello Im looking for a script that can alert me of a 15% change outside the regular trading hours. I'am new to the thinkorswim platform and the scanner I have doesn't do it job after hours; and so I would kindly appreciate if anyone has something like this or can lead me to post that does. Also would it be possible for the stocks listed to be under $5? Thanks again

you didn't say a % change from what?
so i used the last close of normal hours, and compared it to after hours close, and calculated a % difference
it will set off an alert if the % is more than some number.
can turn on bubbles to see the % difference


upper code

#percent_chg_after_upper
#https://usethinkscript.com/threads/15-change-for-pre-market-and-after-hour-trading.20881/
#15% change for Pre Market and after hour trading

input percent_min = 15.0;

def chartagg = GetAggregationPeriod();
def chartmin = chartagg / (1000 * 60);
def aggok = chartmin < 1440;
def start = 0930;
def end = 1600;
def daytime = if SecondsFromTime(start) >= 0 and SecondsTillTime(end) > 0 then 1 else 0;
def cls = if daytime then close else cls[1];

def after_per = if daytime then 0 else Round(100 * (close - cls) / cls, 2);
def isper = if after_per >= percent_min then 1 
 else if after_per <= -percent_min then -1
 else 0;

Alert(after_per == 1, "crossed up" , Alert.BAR, Sound.Ding);
Alert(after_per == -1, "crossed down" , Alert.BAR, Sound.Bell);

#---------------------------
input test_bubble = no;
addchartbubble(test_bubble and aggok, low*0.992,
# chartmin + "\n" +
 after_per + "%"
, (if isper then color.yellow else color.gray), no);
#

lower/scan code

#percent_chg_after_lower
#https://usethinkscript.com/threads/15-change-for-pre-market-and-after-hour-trading.20881/
#15% change for Pre Market and after hour trading

declare lower;

input percent_min = 15.0;

def chartagg = GetAggregationPeriod();
def chartmin = chartagg / (1000 * 60);
def aggok = chartmin < 1440;
def start = 0930;
def end = 1600;
def daytime = if SecondsFromTime(start) >= 0 and SecondsTillTime(end) > 0 then 1 else 0;
def cls = if daytime then close else cls[1];

def after_per = if daytime then 0 else Round(100 * (close - cls) / cls, 2);
def isper = if after_per >= percent_min then 1 
 else if after_per <= -percent_min then -1
 else 0;

plot z = if isper != 0 then 1 else 0;

Alert(after_per == 1, "crossed up" , Alert.BAR, Sound.Ding);
Alert(after_per == -1, "crossed down" , Alert.BAR, Sound.Bell);

#---------------------------
input test_bubble = no;
addchartbubble(test_bubble and aggok, low*0.992,
# chartmin + "\n" +
 after_per + "%"
, (if isper then color.yellow else color.gray), no);
#