Joel Greenblatt acquired 823k Centene shares worth $51.6M. That's 0.14% of their equity portfolio (126th largest holding). The first Centene trade was made in Q3 2011. Since then Joel Greenblatt bought shares 30 more times and sold shares on 23 occasions. The stake costed the investor $40.2M, netting the investor a gain of 28% so far.