Ken Griffin acquired 1.22 Million Gilead Sciences shares worth $89.2 Million. That's 0.09% of their equity portfolio (281st largest holding). The first Gilead Sciences trade was made in Q2 2013. Since then Ken Griffin bought shares 49 more times and sold shares on 50 occasions. The stake costed the investor $88.7 Million, netting the investor a gain of 0.6% so far.