Joel Greenblatt acquired 44.9 Thousand Collegium Pharmaceutical shares worth $1.59 Million. That's 0.03% of their equity portfolio (656th largest holding). The first Collegium Pharmaceutical trade was made in Q2 2021. Since then Joel Greenblatt bought shares four more times and sold shares on one occasions. The stake costed the investor $1.08 Million, netting the investor a gain of 48% so far.