Quantopian's community platform is shutting down. Please read this post for more information and download your code.
Back to Community
"Overnight returns" vs "first 30 minutes of trading returns" linear regression

Good morning,
This is my linear regression in which I compare "Overnight returns" vs "first 30 minutes of trading returns" for the years 2016-2018.
The result gives me a lot of NaNs. Is it because there's not a real correlation between the two elements, or because I might have done some kind of mistake in the process?
Thanks in advance for the help,
Mattia