Ken Griffin acquired 606 Thousand Amerisource Bergen shares worth $109 Million. That's 0.11% of their equity portfolio (243rd largest holding). The first Amerisource Bergen trade was made in Q2 2013. Since then Ken Griffin bought shares 61 more times and sold shares on 53 occasions. The stake costed the investor $62.6 Million, netting the investor a gain of 74% so far.