Robinhood doesn't support trading with OTC stocks. The do allow trading in penny stocks as long as they are still listed on the NASDAQ or any major exchange. Robinhood is limited in numerous areas. I recently transferred 5 Gs into RH to invest into a certain crypto currency only to find out they only allow trading in a small handful of that sector. My choice wasn't included. My money is being transferred back out. I will buy more IPIX with the funds at fidelity after clearing . You do get ONE free share of a company when you open a RH account. I was hoping for amazon but got Viking therapeutics. I don't know if I will able to keep the free share after my early exit.

GL