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I am using framework way to create an algorithm. For example I have 3 universes, A B and C, and I used AddUniverseSelection(). When I am in AlphaModel, I would like to know the list of securities from A universe. I know I can loop like this in def Update(self, algorithm, data):
for kvp in algorithm.UniverseManager:
symbol = kvp.Key
universe = kvp.ValueBut I don't know which universe is A, which is B and so on...
How to get the target universe? Or is there a way to get the target universe security list?
Thank you very much.
Shile Wen
Hi Sulfred,
To access the target Universe securities, we can iterate over its .Members field, where the Key is the Symbol and the Value is the securities. I’ve shown how to do in the attached backtest.
Best,
Shile Wen
Sulfred
Hi Shile,
Thank you for your reply. Your answer works. I can get the security list from the universe, but I still don't know which universe is my target.
For example, I have 2 universes, A and B. Both of them are Fundamental Universe which menas the security list is changing dynamically. I have multiple Alphas. One of the Alphas is looking for the security list generated by Universe A. I would like to ask that if there is a way for that Alpha to identify the target Universe.
Thank you very much.
Shile Wen
Hi Sulfred,
We can extract information from the Symbol the UniverseManager assigned to a given Universe, and make a decision based on this information. I’ve shown how to do this in the attached backtest.
Best,
Shile Wen
Sulfred
Hi Shile,
Yes, I can extract the Symbol from UniverseManager, but how to assign the customer symbol to it so that I can know that which universe is my target universe in alpha model?
Attached is the backtest. I created 2 Fundamental Universe, A_Universe and B_Universe. I print the symbol and see that QC-UNIVERSE-COARSE-USA-0D99CBEF-4DA0-40CB-A00B-C034ECB3345B 2T and QC-UNIVERSE-COARSE-USA-60157FEF-A429-47D0-B2A4-D198059B12E3 2T
How to identify the target universe ?
Shile Wen
Hi Sulfred,
It is not possible to identify Universes that derive from FundamentalUniverseSelectionModel at the moment.
Best,
Shile Wen
Sulfred
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