Ken Griffin's position in ProShares Trust - ProShares Ultra S&P500 2x Shares is currently worth $61.6M. That's 0.05% of their equity portfolio (460th largest holding). The investor owns 202.67% of the outstanding ProShares Trust - ProShares Ultra S&P500 2x Shares stock. The first ProShares Trust - ProShares Ultra S&P500 2x Shares trade was made in Q2 2014. Since then Ken Griffin bought shares 55 more times and sold shares on 57 occasions. The stake costed the investor $25.5M, netting the investor a gain of 141% so far.