Ken Griffin acquired 1.23 Million Geo Group shares worth $28.9 Million. That's 0.03% of their equity portfolio (683rd largest holding). The first Geo Group trade was made in Q3 2014. Since then Ken Griffin bought shares 57 more times and sold shares on 51 occasions. The stake costed the investor $17.3 Million, netting the investor a gain of 67% so far.