I took a look at Alpha’s trading volumes. $XDP has the highest.
$XDP traded 99.73 million; $QUQ traded 93.58 million; $DNA traded 51.11 million; CNPY traded 16.04 million; POP traded 9.49 million.
If you ask me, the ones near the top by trading volume are usually the ones that have seen the biggest swings over the past couple of days. Take that as you will.