Ken Fisher acquired 16.7 Million Petroleo Brasileiro S.A. Petrobras - ADR shares worth $250 Million. That's 0.12% of their equity portfolio (114th largest holding). The first Petroleo Brasileiro S.A. Petrobras - ADR trade was made in Q1 2013. Since then Ken Fisher bought shares twenty more times and sold shares on 23 occasions. The stake costed the investor $190 Million, netting the investor a gain of 31% so far.