It was previously possible to establish a “custom universe” in order to screen more than 200 tickers in each screen by:
There were no constraints on the number of tickers that may be added to a watchlist and then make a custom universe with.
How do I go about assembling 450 tickers in one screening?
Because a stock’s rating is tied to the universe against which it is screened, a custom universe must contain more than 200 tickers.
Hope anyone have a good solution to this!
Have you tried the InList function? You can create a custom list by going to Research / Components / Lists. Click on “New” and add your tickers. Then in your universe rules put InList(“[name of list]”).
If this isn’t what you want, perhaps you could clarify your aim?
Thank you, Yuval. It appears to work, but it generates some odd results.
Depending on whatever universe is selected, I get varied outcomes on the screen backtest.
I assume that the universe in a screen backtest should be “all stocks”? (Because the data to the tickers in the list are retrieved from a universe?)
Maybe some of your universes are leaving some of the InList stocks out at certain points. Yes, All Stocks would be your best bet.
Will this not cause a problem in screenbacktests or simulation back tests?
As far as I can tell, the rating is based on a comparison with the stocks in the universe and not “inlist.” The ranking will then be tried against the “all stocks” universe and will be completely different than if it were conducted against the shares in the “inlist.” Ore?
I also understand that “inlist” can be used for simulator backtesting, but should the inlist code (rule) be in both the buy and sell rules?
Put the InList in your universe rules rather than in the sim. That way the ranking will be done on the InList stocks and the others will be ignored.
Thank you very much! That is precisely what I was looking for.