RE:Huge after hours trade People are panicing, thinking that the world is coming to an end. Yes this virus has to be controlled and there will be some casualities(and I may be one of them) however the vast majority will survise and life will go on. The market will return to norm in time therefore people should hold on to their portfolio's.
The people buying are the very wealthy, who have the liquid resources and ability to margin their portfolio's as they know in time the market will rebound and they will become even wealthier.
Greed is an awful thing but some people care more about themselves rather tghan their friends, neighbours relatives as a whole. Sad state but true.