Ken Griffin acquired 686k ProShares Trust - ProShares Ultra Silver 2x Shares shares worth $58.3M. That's 0.04% of their equity portfolio (567th largest holding). The first ProShares Trust - ProShares Ultra Silver 2x Shares trade was made in Q1 2014. Since then Ken Griffin bought shares 66 more times and sold shares on 49 occasions. The stake costed the investor $28.2M, netting the investor a gain of 107% so far.