Ken Griffin acquired 176 Thousand BlackRock Institutional Trust Company N.A. - iShares MBS ETF shares worth $15.9 Million. That's 0.02% of their equity portfolio (902nd largest holding). The investor owns 615.45% of the outstanding BlackRock Institutional Trust Company N.A. - iShares MBS ETF stock. The first BlackRock Institutional Trust Company N.A. - iShares MBS ETF trade was made in Q1 2014. Since then Ken Griffin bought shares 32 more times and sold shares on 28 occasions. The investor's estimated purchase price is $17.8 Million, resulting in a loss of 11%.