Joel Greenblatt acquired 80.5 Thousand Ecolab shares worth $20.3 Million. That's 0.20% of their equity portfolio (76th largest holding). The first Ecolab trade was made in Q4 2014. Since then Joel Greenblatt bought shares fifteen more times and sold shares on sixteen occasions. The stake costed the investor $15.9 Million, netting the investor a gain of 28% so far.