Jim Simons's position in AMGEN is currently worth $20.9 Million. That's 0.03% of their equity portfolio (582nd largest holding). The first AMGEN trade was made in Q2 2013. Since then Jim Simons bought shares nineteen more times and sold shares on 23 occasions. The stake costed the investor $18.5 Million, netting the investor a gain of 13% so far.