Joel Greenblatt acquired 77.1 Thousand Masimo shares worth $9.57 Million. That's 0.15% of their equity portfolio (141st largest holding). The first Masimo trade was made in Q3 2011. Since then Joel Greenblatt bought shares 24 more times and sold shares on 24 occasions. The stake costed the investor $8.06 Million, netting the investor a gain of 19% so far.