Ken Griffin's position in BlackRock Institutional Trust Company N.A. - iShares Russell 2000 ETF is currently worth $9.25 Billion. It makes up 9.09% of their stock portfolio and is their biggest holding. The investor owns 352697.31% of the outstanding BlackRock Institutional Trust Company N.A. - iShares Russell 2000 ETF stock. The first BlackRock Institutional Trust Company N.A. - iShares Russell 2000 ETF trade was made in Q3 2014. Since then Ken Griffin bought shares 53 more times and sold shares on 41 occasions. The stake costed the investor $7.24 Billion, netting the investor a gain of 28% so far.