Joel Greenblatt acquired 222 Thousand Hologic shares worth $16.9 Million. That's 0.29% of their equity portfolio (39th largest holding). The first Hologic trade was made in Q2 2012. Since then Joel Greenblatt bought shares nineteen more times and sold shares on sixteen occasions. The stake costed the investor $14.6 Million, netting the investor a gain of 16% so far.