Joel Greenblatt acquired 254 Thousand Omnicom Group shares worth $18.3 Million. That's 0.15% of their equity portfolio (151st largest holding). The first Omnicom Group trade was made in Q2 2011. Since then Joel Greenblatt bought shares 29 more times and sold shares on 26 occasions. The investor's estimated purchase price is $19.4 Million, resulting in a loss of 5.8%.