Ken Griffin's position in TransUnion is currently worth $180 Million. That's 0.19% of their equity portfolio (115th largest holding). The investor owns 1.26% of the outstanding TransUnion stock. The first TransUnion trade was made in Q2 2015. Since then Ken Griffin bought shares 52 more times and sold shares on 34 occasions. The stake costed the investor $171 Million, netting the investor a gain of 5.3% so far.