We recently published 13 Best ADR Stocks to Invest In.  Rio Tinto Group (NYSE:RIO) is one of the best ADR stocks. Rio Tinto Group (NYSE:RIO) is one of the biggest mining companies in the world. Its CEO, Simon Trott, made major announcements on December 4th when he shared the firm’s plans to generate as much as $10 billion in through restructuring via divestments and other other strategies. Trott was speaking to Rio Tinto Group (NYSE:RIO)’s investors in London as he shared that the firm might consider lett ...