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Sentiment trading strategy on all US stocks

Hi, I am new to Quantopian and I am trying to run Alphalens on all US stocks. I have seen multiple examples including the tutorial where Q500US, Q1500US, Q3000US is being used. I however need to consider the 23829 unique companies to avoid survivorship bias.

Anyone able to help me with that?

Everything I try if I change my universe I end up with NaN's in the sentiment column.

The result at the end I have is due to the second pipeline which I have commented out. This takes 570 companies into consideration.

Would greatly appreciate a response to my problem.

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