Monday's looking like more of the same thing: going south.
While last week's "good times" actually gave a lot of traders a terrible day(s), many had a good week last week trading (not investing) in companies that are claiming to be working on vaccines and whatnot for coronavirus. As Trey mentioned, even companies that sell painter's/SARS masks had their stocks skyrocketing last week (Home Depot even put sales limits on them). We're talking multiples of doubling in value, some going many, many times their value. Generally, these are crappy companies, however, and you do not want your money near them long-term or passively . . .
Example tickers found here:
https://finviz.com/.
The point here is that in stocks, there is always a bright side, so long as you are willing to burn your money in a Dumpster fire!