Jim Simons's position in Caredx is currently worth $27.4M. That's 0.04% of their equity portfolio (547th largest holding). The investor owns 2.32% of the outstanding Caredx stock. The first Caredx trade was made in Q1 2015. Since then Jim Simons bought shares eighteen more times and sold shares on fourteen occasions. The investor's estimated purchase price is $33.1M, resulting in a loss of 17%.