All this rumor and speculation about a vaccine or cure will change throughout the day and influence the market as the day goes on.
It's emotional trading. That typically (emphasis on TYPICALLY) never ends well.
The short sellers will be out soon.
Yeah, like 30 or so years from now for most people.
As a long time investor (since 1986), it simply doesn't matter what the markets close at TODAY. Or TOMORROW. Or the next day. I rode out the 1987 crash, the dot.com bust, the housing bubble, even Obama.
In fact, I remember my co-workers back in 1987 (1987!) fretting about their 401k's during that year's crash. Back then, Japan was basically about to buy the United States and put us all into servitude and a decades long recession. According to the "experts" of the time.