Ken Griffin's position in BlackRock Institutional Trust Company N.A. - iShares Silver Trust is currently worth $3.66 Million. That's 0.00% of their equity portfolio (1756th largest holding). The investor owns 141.28% of the outstanding BlackRock Institutional Trust Company N.A. - iShares Silver Trust stock. The first BlackRock Institutional Trust Company N.A. - iShares Silver Trust trade was made in Q1 2014. Since then Ken Griffin bought shares 56 more times and sold shares on 39 occasions. The stake costed the investor $3.28 Million, netting the investor a gain of 12% so far.