Joel Greenblatt acquired 80.1 Thousand Masimo shares worth $10.8 Million. That's 0.19% of their equity portfolio (91st largest holding). The first Masimo trade was made in Q3 2011. Since then Joel Greenblatt bought shares 24 more times and sold shares on 23 occasions. The stake costed the investor $8.37 Million, netting the investor a gain of 29% so far.