John W. Rogers Jr. acquired 1.14M Northern Trust shares worth $190M. That's 2.06% of their equity portfolio (21st largest holding). The first Northern Trust trade was made in Q1 2013. Since then John W. Rogers Jr. bought shares 24 more times and sold shares on 28 occasions. The stake costed the investor $79.9M, netting the investor a gain of 137% so far.