Jim Simons acquired 678k Medpace Holdings shares worth $327M. That's 0.42% of their equity portfolio (32nd largest holding). The investor owns 2.45% of the outstanding Medpace Holdings stock. The first Medpace Holdings trade was made in Q3 2017. Since then Jim Simons bought shares sixteen more times and sold shares on fifteen occasions. The stake costed the investor $89.3M, netting the investor a gain of 266% so far.