Ken Griffin's position in AMGEN is currently worth $5.97 Million. That's 0.01% of their equity portfolio (1542nd largest holding). The first AMGEN trade was made in Q2 2013. Since then Ken Griffin bought shares 54 more times and sold shares on 60 occasions. The stake costed the investor $5.9 Million, netting the investor a gain of 1.2% so far.