Ken Griffin acquired 1.32 Million Cameco shares worth $72.5 Million. That's 0.08% of their equity portfolio (327th largest holding). The first Cameco trade was made in Q2 2013. Since then Ken Griffin bought shares 63 more times and sold shares on 39 occasions. The stake costed the investor $22.1 Million, netting the investor a gain of 228% so far.