Ken Griffin acquired 172 Thousand Vertex Pharmaceuticals shares worth $73 Million. That's 0.07% of their equity portfolio (351st largest holding). The first Vertex Pharmaceuticals trade was made in Q3 2013. Since then Ken Griffin bought shares 54 more times and sold shares on 56 occasions. The stake costed the investor $38.5 Million, netting the investor a gain of 89% so far.