Which ranking systems do you use?

[chris319]

there is some reason why you would use Between (RankPos, 1, 60) instead of,

rank <60
Rankpos> 60 ?

Because you could have, say, Between (RankPos, 10, 20), thus eliminating the top n stocks.

Something about that universe seems suspect imho.

Agreed. OP hasn’t explained how this universe is constructed.