 BidaskClub downgraded shares of Dorchester Minerals NASDAQ:DMLP from a sell rating to a strong sell rating in a research report report published on Tuesday morning, BidAskClub reports. Shares of DMLP stock opened at 15.83 on Tuesday. The company has a debt-to-equity ratio of 0.02, a current ratio of 8.46 and a quick ratio of 8.46. ... 