return random stocks from universe

Research
1

Is this the correct way to randomly return 50% of the stocks in my universe?
Is this the most efficient way to do it?

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966551A7-DEF2-4499-89D7-0E6227498DCE.jpeg1958Ă—416 110 KB

2

One liner, either one:
FRank(“random”,#previous) < 50
FRank(“random”,#previous) > 50

3

This is the most efficient

random>.5

1 Like
4

Thanks Marco.

5

Is there a way to do this so that it is repeatable? There are times when I want to try different factors and would like to select that same subset. I have been using Mod(StockID, 5) = 0 or 1 or 2, etc. Is that the best way?

Cary

6

yes. StockID never changes

7

Are StockIDs historically unique? That is, they are never reused.

8

That is correct, they are never reused.