Based on CrowdTangle data, NewsMax likely has a higher engagement rate on Facebook than Fox News. Newsmax’s Facebook page had the third most interactions in the politics category on Facebook — right behind President Trump and Fox News.
In terms of reach and shares, however, it's difficult to say for certain which outlet is more viral based on CrowdTangle's data. Based on NewsMax's reported numbers, their Facebook page might have had a higher engagement rate, but that could also be because both Fox News and President Trump have large followings on Facebook.
Overall, it seems that NewsMax is doing an excellent job generating attention on social media — and they're definitely getting people talking about the conservative news outlet.