Ken Griffin acquired 438 Thousand Intuitive Surgical shares worth $165 Million. That's 0.17% of their equity portfolio (125th largest holding). The first Intuitive Surgical trade was made in Q2 2013. Since then Ken Griffin bought shares 52 more times and sold shares on 45 occasions. The stake costed the investor $70.6 Million, netting the investor a gain of 134% so far.