Jim Simons acquired 505k Medpace Holdings shares worth $231M. That's 0.32% of their equity portfolio (45th largest holding). The investor owns 1.81% of the outstanding Medpace Holdings stock. The first Medpace Holdings trade was made in Q3 2017. Since then Jim Simons bought shares seventeen more times and sold shares on seventeen occasions. The stake costed the investor $70.3M, netting the investor a gain of 229% so far.