Ray Dalio acquired 2.1 Million BlackRock Institutional Trust Company N.A. - iShares Core S&P 500 ETF shares worth $1.12 Billion. It makes up 5.67% of their stock portfolio and is their biggest holding. The investor owns 42633.91% 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 Q3 2010. Since then Ray Dalio bought shares seventeen more times and sold shares on nine occasions. The stake costed the investor $688 Million, netting the investor a gain of 62% so far.