Jim Simons acquired 5.48 Million Alkermes plc shares worth $166 Million. That's 0.26% of their equity portfolio (64th largest holding). The investor owns 3.18% of the outstanding Alkermes plc stock. The first Alkermes plc trade was made in Q2 2013. Since then Jim Simons bought shares 21 more times and sold shares on nineteen occasions. The stake costed the investor $144 Million, netting the investor a gain of 16% so far.