Joel Greenblatt acquired 45.5 Thousand Ecolab shares worth $9.99 Million. That's 0.18% of their equity portfolio (104th largest holding). The first Ecolab trade was made in Q4 2014. Since then Joel Greenblatt bought shares thirteen more times and sold shares on fourteen occasions. The stake costed the investor $8.41 Million, netting the investor a gain of 19% so far.