Ken Griffin acquired 1.75 Million BlackRock Institutional Trust Company N.A. - iShares 20+ Year Treasury Bond ETF shares worth $155 Million. That's 0.16% of their equity portfolio (139th largest holding). The investor owns 5991.54% of the outstanding BlackRock Institutional Trust Company N.A. - iShares 20+ Year Treasury Bond ETF stock. The first BlackRock Institutional Trust Company N.A. - iShares 20+ Year Treasury Bond ETF trade was made in Q2 2014. Since then Ken Griffin bought shares 56 more times and sold shares on 38 occasions. The investor's estimated purchase price is $207 Million, resulting in a loss of 25%.