Jeremy Grantham acquired 1.07 Million Intuitive Surgical shares worth $547 Million. That's 1.71% of their equity portfolio (18th largest holding). The first Intuitive Surgical trade was made in Q1 2013. Since then Jeremy Grantham bought shares fourteen more times and sold shares on fifteen occasions. The stake costed the investor $321 Million, netting the investor a gain of 70% so far.