Jim Simons acquired 3.97 Million U.S. Silica Holdings shares worth $63 Million. That's 0.09% of their equity portfolio (252nd largest holding). The investor owns 6.18% of the outstanding U.S. Silica Holdings stock. The first U.S. Silica Holdings trade was made in Q4 2014. Since then Jim Simons bought shares eleven more times and sold shares on thirteen occasions. The stake costed the investor $31.7 Million, netting the investor a gain of 99% so far.