Hi there i'm a bit curious 

I recently found out that next to the available coins, there are so called "securities" where you can trade in.
Things like companies, websites, co-op groups etc Security exchanges are sites like Crypto-stocks (https://cryptostocks.com/securities)

How many of you also trade in these securities?
Or did you not know what these where and that you could also trade these?

Tnx for commenting