John W. Rogers Jr. acquired 1M Affiliated Managers Group shares worth $371M. That's 4.03% of their equity portfolio (3rd largest holding). The investor owns 3.78% of the outstanding Affiliated Managers Group stock. The first Affiliated Managers Group trade was made in Q3 2018. Since then John W. Rogers Jr. bought shares 21 more times and sold shares on ten occasions. The stake costed the investor $126M, netting the investor a gain of 195% so far.