Ron Baron acquired 1.23 Million Caredx shares worth $16 Million. That's 0.05% of their equity portfolio (210th largest holding). The investor owns 2.27% of the outstanding Caredx stock. The first Caredx trade was made in Q2 2018. Since then Ron Baron bought shares twelve more times and sold shares on seven occasions. The stake costed the investor $12.3 Million, netting the investor a gain of 30% so far.