Ken Griffin acquired 4.67 Million BlackRock Institutional Trust Company N.A. - iShares iBoxx USD High Yield Corporate Bond ETF shares worth $364 Million. That's 0.36% of their equity portfolio (34th largest holding). The investor owns 13874.10% of the outstanding BlackRock Institutional Trust Company N.A. - iShares iBoxx USD High Yield Corporate Bond ETF stock. The first BlackRock Institutional Trust Company N.A. - iShares iBoxx USD High Yield Corporate Bond ETF trade was made in Q1 2014. Since then Ken Griffin bought shares 56 more times and sold shares on 32 occasions. The stake costed the investor $348 Million, netting the investor a gain of 4.5% so far.