RE:Fairfax buying Blackberry?This news was from September 2020 regarding Fairfax. They most likely own 16+% of BB at this time.
https://www.fairfax.ca/news/press-releases/press-release-details/2020/Fairfax-Announces-Acquisition-of-1.75-Convertible-Debentures-of-BlackBerry-Limited-After-Redemption-of-Existing-Convertible-Debentures/default.aspx
I've been patiently holding BB for a couple of years and this doesn't go up 21% with 12M shares traded without some major news.