Jim Simons's position in Caredx is currently worth $15.1M. That's 0.02% of their equity portfolio (864th largest holding). The investor owns 2.08% of the outstanding Caredx stock. The first Caredx trade was made in Q1 2015. Since then Jim Simons bought shares seventeen more times and sold shares on twelve occasions. The investor's estimated purchase price is $32.7M, resulting in a loss of 54%.