Jim Simons acquired 28.9k Mesa Laboratories shares worth $3.65M. That's 0.00% of their equity portfolio (1531st largest holding). The first Mesa Laboratories trade was made in Q2 2013. Since then Jim Simons bought shares twenty more times and sold shares on 31 occasions. The stake costed the investor $3.23M, netting the investor a gain of 13% so far.