You asked for "lists either the most active stocks" that is what I gave you... Dark pools are referred to as hidden liquidity for a reason, all...
I cannot easily post the file but here are the most actively traded stocks from UBS in order of most to least: AMAT BAC FB SPY RAD XLF...
There are daily reports that are emailed out to customers, if you have a connection to the dark pool chances are your broker can get you the daily...
Separate names with a comma.