Jim Simons's position in Proto Labs is currently worth $9.26 Million. That's 0.01% of their equity portfolio (947th largest holding). The investor owns 1.17% of the outstanding Proto Labs stock. The first Proto Labs trade was made in Q3 2015. Since then Jim Simons bought shares eleven more times and sold shares on ten occasions. The investor's estimated purchase price is $19.1 Million, resulting in a loss of 52%.