Joel Greenblatt acquired 89.6k Caredx shares worth $2M. That's 0.01% of their equity portfolio (1104th largest holding). The first Caredx trade was made in Q4 2018. Since then Joel Greenblatt bought shares seven more times and sold shares on ten occasions. The stake costed the investor $1.52M, netting the investor a gain of 31% so far.