Top % in last trailing 30 minutes (updating every 1 minute)

[evanevans]

I was wondering if anyone knows of any existing code/indicators which would show the top ten Percent% Gainers (all stocks, tick_count>1000) in the last 30 minutes, updating every minute (so something like close>close[30] on a 1m(ext), that will cover all of pre, market, and post market hours? I can tinker with code, so anything close I can probably work with. Any help much appreciated. (yes I did several searches but it didn't prove very fruitful for me). Many thanks in advance!

 

[Joshua]

The first step is to create a custom watch list column. Then you set your scan to be "Sorted By:" the custom column descending. A scan set to "Show:" ten stocks will provide you with a top ten list, or what ever number you choose. The settings will be primarily dictated by the column's own settings, that's where you would select the time frame, extended hours, and so on. The scan itself can even be left blank, unless you have other criteria.

I can't determine the time frame of the desired 1000 ticks based on how you worded it.
This would be for a 30 minute column:

plot Column = if tick_count >= 1000
then (close - close[1]) / close[1] * 100
else Double.NEGATIVE_INFINITY;

There is no way to control how often a scan will auto-update. It's usually around five minutes +/- a couple of minutes. If you add the column to the scan's results, and anything shows up as -infinity, then currently there are not enough stocks with 1000 tick count. This feature of the scanner can be janky during any sort of maintenance, weekends.