Ken Griffin's position in BlackRock Institutional Trust Company N.A. - iShares Russell 2000 ETF is currently worth $4.97 Billion. It makes up 4.73% of their stock portfolio and is their biggest holding. The investor owns 193.94% 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 60 more times and sold shares on 49 occasions. The stake costed the investor $3.75 Billion, netting the investor a gain of 33% so far.