Prem Watsa's position in U.S. Silica Holdings is currently worth $1.7 Million. That's 0.11% of their equity portfolio (33rd largest holding). The first U.S. Silica Holdings trade was made in Q4 2018. Since then Prem Watsa bought shares two more times and sold shares on two occasions. The stake costed the investor $328 Thousand, netting the investor a gain of 417% so far.