Ken Griffin acquired 729 Thousand Insulet shares worth $227 Million. That's 0.23% of their equity portfolio (85th largest holding). The investor owns 1.04% of the outstanding Insulet stock. The first Insulet trade was made in Q2 2013. Since then Ken Griffin bought shares 55 more times and sold shares on 51 occasions. The stake costed the investor $136 Million, netting the investor a gain of 67% so far.