This might be because of the ship run aground in the Suez. A lot of companies are gonna default on deliveries. And, unless the “God did this” clause kicks in their being late is their problem. It might well be that stock is being sold in companies that are going to go under.
As to “do I care?”. Ell no. The delay in delivery is only going to hurt globalists and EU guv’mts. Tough. US trade comes across the pacific and thru the Panama canal.
Except I have no idea how Discovery and ViacomCBS fits.
Maybe they just want the money and are selling off to reposition?