Maybe a stock exchange that accepts bitcoin and is anonymous.
*anonymity is very important too me.*
There are companies that do have Bitcoins and stocks and you can buy one in the relation with other one , but these companies are the ones which do need KYC because at the end of the day if something happens they won't know who to go with . . . .
Plus if the company do not have KYC , you should also rethink , how serious they are about this matter ?
I do want to say some thing * Bitcoins are investment in themselves therefore you don't really have to wait for someone to give you good returns , you can hold and at the same time , you can trade *
If everything fails there are website online where you can lend Bitcoins and at the same time gain some interest.
Here is top lending services for Bitcoins:
https://cryptomaniaks.com/best-bitcoin-lending-sites
Best of luck.