Ken Griffin's position in BlackRock Institutional Trust Company N.A. - iShares Core S&P 500 ETF is currently worth $62.3 Million. That's 0.06% of their equity portfolio (369th largest holding). The investor owns 2403.37% of the outstanding BlackRock Institutional Trust Company N.A. - iShares Core S&P 500 ETF stock. The first BlackRock Institutional Trust Company N.A. - iShares Core S&P 500 ETF trade was made in Q4 2014. Since then Ken Griffin bought shares 34 more times and sold shares on 25 occasions. The stake costed the investor $50.3 Million, netting the investor a gain of 24% so far.