After seeing many fluctuations in ranking from lat 2 weeks its finally confirmed that Google has made a core update on 12th March 2019.
It is also called Florida 2 Update by webmaster world.
Since its a core update it will be hard to say which niche is effected major and which are not.
Here is a tweet from Google that confirm the updates.
This week, we released a broad core algorithm update, as we do several times per year. Our guidance about such updates remains as we’ve covered before. Please see these tweets for more about that:https://t.co/uPlEdSLHoXhttps://t.co/tmfQkhdjPL
— Google SearchLiaison (@searchliaison) March 13, 2019
What are changes are the update?
Few rumors are their that the algorithm is again targeting medical and health related site but google said their is no specific target since its a broad core algorithm.
So for current it will be little hard to say which niche is effected, we will know after analysis is done. Read this article by search engine journal if you site is effected by the new algorithm.
You can know more about the algo update here
Image source: kkoutsourcing
Great article about core update 2020