Let's check out hedge fund and insider activity in other stocks similar to Cliffs Natural Resources Inc (NYSE:CLF). These stocks are Alliance Resource Partners, L.P. (NASDAQ: ARLP ), Tahoe Resources Inc (NYSE: TAHO ), Natural Resource Partners LP (NYSE: NRP ), Compass Minerals International, Inc. (NYSE: CMP ), and Titanium Metals Corp (NYSE: TIE ). This group of stocks belong to the industrial metals & minerals industry and their market caps are closest to CLF's market cap.