It seems pretty straightforward to me that a massive pandemic is going to hurt the economy, regardless of government action. I'm sure there will be other data points to look at in the future for what the consequences of various responses were (e.g. Sweden vs neighbors/etc?).
This is a very cool app, but one thing I'm noticing is that you aren't providing any numbers about expectations (expected earnings/share, etc). Stock prices are forward projections, so it's less about how much money made/lost and more about how much money made/lost beyond current expectations. And this is certainly information a real insider trader would have.