Who is buying osmose inc stocks?
Osmose is a privately-held corporation, so any shares of it are in the hands of its employees. If there WERE Osmose stocks, they'd be held by people who specialize in the building products industry. (Osmose makes chemicals for preserving wood.)
The main disadvantage of buying penny stocks is that the value of the stocks fluctuate enormously on a day to day basis. Penny stocks may also be very hard to sell once you own them. To benefit from penny stocks, one must be very knowledgeable and experienced with buying and selling stocks, so penny stocks are not for first time buyers.