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SetUniverseSelection vs AddUniverseSelection Difference

Hi QC,

I have been searching through documentation and forums for the difference between the 2 methods and when to use SetUniverseSelection vs AddUniverseSelection. I haven't been able to find an answer. Perhaps I missed a link?

Could someone help me on the differences between them please?

Thanks in advance

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Hi Bgrm1,

Short answer: we should use AddUniverseSelection().
Real answer: You could compare the source code of those two methods here. SetUniverseSelection() is the old way and we recommend to use AddUniverseSelection(). In the future, we will support Composite Universe Selection, where you may add multiple universe selection models with AddUniverseSelection().

Hope it helps. 

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The material on this website is provided for informational purposes only and does not constitute an offer to sell, a solicitation to buy, or a recommendation or endorsement for any security or strategy, nor does it constitute an offer to provide investment advisory services by QuantConnect. In addition, the material offers no opinion with respect to the suitability of any security or specific investment. QuantConnect makes no guarantees as to the accuracy or completeness of the views expressed in the website. The views are subject to change, and may have become unreliable for various reasons, including changes in market conditions or economic circumstances. All investments involve risk, including loss of principal. You should consult with an investment professional before making any investment decisions.


Thanks Link! AddUniverseSelection it is.

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The material on this website is provided for informational purposes only and does not constitute an offer to sell, a solicitation to buy, or a recommendation or endorsement for any security or strategy, nor does it constitute an offer to provide investment advisory services by QuantConnect. In addition, the material offers no opinion with respect to the suitability of any security or specific investment. QuantConnect makes no guarantees as to the accuracy or completeness of the views expressed in the website. The views are subject to change, and may have become unreliable for various reasons, including changes in market conditions or economic circumstances. All investments involve risk, including loss of principal. You should consult with an investment professional before making any investment decisions.


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