Currently Alpaca does not allow trading of OTC/PINK equities.
Can we please see these supported soon.
One example is GBTC, junior mining stocks, and other speculative equities which are tradable with E-Trade but not with Alpaca. This is a severe limitation.
Can we PLEASE see them! I’m 100% on board with @Abbey_Road on this one. It would be a GAMECHANGER and I would use Alpaca primarily as soon as that transition occurs. Hey bring me in give me a computer and point me in the right direction and I’ll integrate it for Alpaca free of charge. 
Great service I just want it to expand into the OTC / Pink securities where the real ROI are.