Ken Griffin's position in BlackRock Institutional Trust Company N.A. - iShares Silver Trust is currently worth $4.56 Million. That's 0.00% of their equity portfolio (1647th largest holding). The first BlackRock Institutional Trust Company N.A. - iShares Silver Trust trade was made in Q1 2014. Since then Ken Griffin bought shares 62 more times and sold shares on 45 occasions. The stake costed the investor $3.51 Million, netting the investor a gain of 30% so far.