I have some Ada in late 2019 which I bought at $0.038 on October, unfortunately I sold it by December 2019 at $0.056, and Ada coin is currently trading at $0.134.
I must say that Cardano is a potential project to invest any time. The project has place itself as one of the best platform on the crypto space. I think i will buy some Ada coin at the end of 2020.