If you own stock mainly in companies like Amazon, Apple, FedEx and Zoom, you are probably having your best investment year ever.
On the other hand, if you are holding stock in companies like Hertz, Marriott, or any major airline, it has likely been a disaster of 1929 proportions.
Most investers are diversified enough where overall they are doing okay or even a little good (my 401k is up 5% so far this year).
It's easy to look at businesses that have been devastated by the pandemic and think that the sky should be falling. But there are a lot of companies out there that are going gangbusters and have actually gotten a major boost from the pandemic situation. Who know a year ago that we should be investing in companies like Kodak and GoJo Industries (owners of Purell Hand Sanizer)?
You left off the foreign stocks. Pacific Rim countries and European countries economies are not doing all that well. Except Vietnam.
My Small Cap stock funds are up huge. Large cap not so much. However, foreign stocks are struggling. Most of Europe was in a recession prior to covid.
Oil is down too. So, that greatly affects the prosperity in many foreign countries. Plus major parts of the economy of the US.