Ken Griffin's position in Arch Resources is currently worth $51.8 Million. That's 0.05% of their equity portfolio (433rd largest holding). The investor owns 1.81% of the outstanding Arch Resources stock. The first Arch Resources trade was made in Q4 2016. Since then Ken Griffin bought shares 45 more times and sold shares on 39 occasions. The stake costed the investor $29.2 Million, netting the investor a gain of 78% so far.