We're in the middle of one due to COVID19 messing up supply chains and causing widespread unemployment. The USA (and Europe) have pumped trillions of dollars into our economic systems to stave off the collapse.
One could argue that Apple benefits from COVID19, with fewer people visiting say Disneyworld, but maybe more people playing iPhones / video games inside the house. So Apple is currently speculated to be a global leader after this whole COVID19 thing is done. Even with this explanation however, the stock market doesn't make sense to me right now.
With that being said, I'm still investing. But I'm increasing my exposure to Bonds (from 20% to 30%) in my short term holdings, maybe pushing it further than that. I'm not liking the winds of the global economy right now, so I do feel like pushing towards safer investments. But given the record drop in tax revenues across the USA, Bonds don't seem like a safe bet either.
This seems like a very difficult market to invest right now.