CMEDY -7.28 to 3.50, got a serious haircut today after OTC Markets labeled it "Caveat Emptor" and moved it to the grey market. Formerly CMED, it was delisted by the Nasdaq in March and then amazingly had a huge run to $12 on buyout rumors before being suspended by the SEC two weeks ago. Trading resumed today.
ZSTN is another pinksheet wonder, having had a big run since being delisted. Crazy stuff !