Ray Dalio acquired 3M BlackRock Institutional Trust Company N.A. - iShares Core S&P 500 ETF shares worth $2.31B. That's 9.45% of their entire equity portfolio (2nd largest holding). 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 24 more times and sold shares on eleven occasions. The stake costed the investor $1.32B, netting the investor a gain of 74% so far.