Jim Simons's position in Intuitive Surgical is currently worth $4.11 Million. That's 0.01% of their equity portfolio (1414th largest holding). The first Intuitive Surgical trade was made in Q2 2013. Since then Jim Simons bought shares nineteen more times and sold shares on 22 occasions. The stake costed the investor $3.55 Million, netting the investor a gain of 16% so far.