Ken Fisher acquired 16 Million Rio Tinto plc - ADR shares worth $1.09 Billion. That's 0.55% of their equity portfolio (51st largest holding). The investor owns 1.28% of the outstanding Rio Tinto plc - ADR stock. The first Rio Tinto plc - ADR trade was made in Q1 2013. Since then Ken Fisher bought shares 24 more times and sold shares on twelve occasions. The stake costed the investor $943 Million, netting the investor a gain of 16% so far.