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 61 more times and sold shares on 48 occasions. The investor sold all their shares in Q1 2025 and doesn't own any shares in BlackRock Institutional Trust Company N.A. - iShares 20+ Year Treasury Bond ETF anymore.