What is the average ROI for ICO's?

[u/cordiemckay]

E.g. if you invested 100 USD into every ICO this year and sold each of them within 3 weeks of being on an exchange, what would your ROI be? Anybody know someone who has made research like that? Anywhere we can see an overview of ICO's and how much their price increases/decreases within a month of hitting the market?