Ken Griffin acquired 866k Argen X SE shares worth $650M. That's 0.55% of their equity portfolio (17th largest holding). The investor owns 1.49% of the outstanding Argen X SE stock. The first Argen X SE trade was made in Q1 2018. Since then Ken Griffin bought shares 44 more times and sold shares on 36 occasions. The stake costed the investor $377M, netting the investor a gain of 73% so far.