Ray Dalio acquired 144 Thousand AMGEN shares worth $38.2 Million. That's 0.21% of their equity portfolio (86th largest holding). The first AMGEN trade was made in Q4 2008. Since then Ray Dalio bought shares 26 more times and sold shares on twenty occasions. The stake costed the investor $36.5 Million, netting the investor a gain of 4.5% so far.